The organization of Trilobites, deduced from their living affinities. With a systematic review of the species hitherto described / By Hermann Burmeister ... Ed. from the German by Professor Bell ... and Professor E. Forbes.

  • Burmeister, Hermann, 1807-1892. Organisation der Trilobiten. English
Date:
1846
Catalogue details

Licence: Public Domain Mark

Credit: The organization of Trilobites, deduced from their living affinities. With a systematic review of the species hitherto described / By Hermann Burmeister ... Ed. from the German by Professor Bell ... and Professor E. Forbes. Source: Wellcome Collection.

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    Remopleurides, Porti, p. 116. Colbii, Porti, dorso-spinifer, Porti, lateri-spinifer, Porti, longi-capitatus, Porti, longi-costatus, Porti. Trinucleus, Lhwyd. ? Asaphoides. Murch. See remarks, p. 58. Caractaci, Murch. Ibid. p. 56. II. To the above List of British Trilobites must be added those species described since the publication of Mr. Morris’s Catalogue, and which have not come under the inspection of Professor Burmeister. In Mr. M'Coy’s c Synopsis of the Carboniferous Fossils of Ireland,’ the following new species are described and figured :* Griffithides calcaratus. Phillipsia (?) discors. Phillipsia coelata. Phillipsia mucronata. Phillipsia Colei. Phillipsia quadriserialis. In Mr. M£Coy’s ‘ Synopsis of the Silurian Fossils of Ireland/ collected by Mr. Griffith (Dublin, 1846), the following new genera and species are described and figured: Tiresias. New genus. “ Cephalo-thorax semioval, longitudinal; glabella very gibbous, pyriform, rounded in front, contracted into a narrow neck posteriorly (obscure traces of two small cephalo-thoracic furrows on each side) ; neck furrow very strong; cheeks triangular, gibbous, prolonged backwards into long flattened spines; eyes none?” “ This remarkable Trilobite agrees nearly in form with the carboniferous genus Griffithides, Porti., except in being . apparently blind.” (Loc. cit. p. 43.) One species, T. insculptus, in the limestone of the Chair of Kildare. Forbesia. New genus. [From the description and figures this genus would appear to be synonymous with Proetus.] F. latifrons. Portlockia. New genus. Cephalo-thorax truncato-orbicular, lateral angles not produced into spines; glabella large, clavate, widest in front, reaching to the margin, contracting to a narrow neck behind; neck furrow strong; cheeks rather small, triangular, convex; eyes large, reniform; abdomen of thirteen segments, rounded at their extremities, anterior margin sharpened for contraction; pygidium semi-elliptical, of seven simple segments ; margin entire, smooth. The genus includes Calymene tuberculata and C. macrophthalma of the Silurian system ; Phacops tuberculata of Captain Portlock’s report; Calymene nupera, Flail; Calymene bufo, Green, &c. * In the same work are described and figured the following allied Crustacea from the carboniferous limestone of Ireland: Dithyrocaris (Scoular) Scouleri; Entomoconchus (new genus, M'Coy) Scouleri; Cytherina Phillipsiana of De Köninck; Daphnia primasva; Bairdia (new genus, M£Coy) curtus. B. gracilis; Cythere amygdalina, C. arcuata, C. bituberculata, C. costata, C. cornuta, C. elongata, C. excavata, C. gibberula, C. Hibbertii, C. impressa, C. inflata, C. inornata, C. oblonga, C. orbicularis, C. pusilla, C. seutulum, C. spinigera, C. trituberculata. Trinucleus elongatus, Porti, fimbriatus, Murch. Ibid. p. 57. latus. Porti. Lloydii, Mui'ch. T. granulatus, p. 57. nudus, Murch. an Ampyx. (note, p. 57). ? punctatus, Murch. radiatus, Murch. Trinucleus ornatus, p. 58. seticornis, Porti, p. 58.