On the sponges collected during the 'Skeat expedition' to the Malay peninsula, 1899-1900 / by Igerna B.J. Sollas.

  • Sollas, Igerna Brünhilda Johnson.
Date:
1902
Catalogue details

Licence: In copyright

Credit: On the sponges collected during the 'Skeat expedition' to the Malay peninsula, 1899-1900 / by Igerna B.J. Sollas. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    Tetraxonia. Carnosa. 22. Dercitus plicatus Topsent. Dercitus plicatus Topsent, Arch, cle Zool. Exp. (3) iii. p. 493 (1895). Sponge growing on a valve of lamellibranch shell. Pinkish. Surface uneven. Spicules calthrops - like microtriaenes and spined microxeas; microdichotrisenes absent. The spicules have a somewhat wider range of size than those of Topsent’s specimens. Orthotrisenes, cladus OTO-0’24 x 0'015-0’027 mm. Microxeas 0’012-0‘025 x 0'002-0*003 mm., including the spines. Great Redang. 23. Dercitus pauper, n. sp. (Plate XV. fig. 1.) Sponge pink, encrusting. The specimen is growing on a piece of dead coral skeleton; it forms a long narrow band about 50 X 5 mm. and 1 or 2 mm. thick. Surface smooth and shining. No oscula visible. The megascleres are small dichotriaenes or simple calthrops-like microtrisenes (the latter spicule rare). The megascleres are sparsely distributed, contrasting with the interlocking spicules in D. plicatus. Dichotrisene, protocladus 0*05-0’06 x 0*01 ; deuterocladus 0'03 ; rhabdome 0*08 mm. Orthotrisene, cladus 0*06-0'07 X 0*003 mm. Spined microxeas 0*015-0*02 x 0*001 mm. Great Redang. 24. Samus anonyma Gray. Samus anonyma Gray, P.Z.S. 1867, p. 526; Carter, A. M. N. H. ser. 5, vol. iii. p. 350 (1879); Sollas, Voy. of H.M.S. ‘ Challenger,’ vol. XXV. p. 57. Sponge growing on a lamellibranch shell in company with Terpios fugax and Hymedesmia hallezi. The measurements of the spicules agree with those given in the ‘Challenger’ Monograph. Pulau Bidang. TeTR ACTINELLID A. 25. Tetilla ridleyi Sollas. Tetilla ridleyi Sollas, ‘ Challenger ’ Monograph, xxv. p. 48. Sponge hemispherical; surface rough; oscula few, small, with slightly raised rims, forming an interrupted ring round the sponge. Diameter of base about 16 mm. Oxeas 2*16 X 0*026 mm. Protrisenes, cladus 0*037-0*14 mm. [10]