Guide to the Crustacea, Arachnida, Onychophora and Myriopoda exhibited in the Dept. of Zoology, British Museum (Natural History).

  • British Museum (Natural History). Department of Zoology.
Date:
1910
Catalogue details

Licence: In copyright

Credit: Guide to the Crustacea, Arachnida, Onychophora and Myriopoda exhibited in the Dept. of Zoology, British Museum (Natural History). Source: Wellcome Collection.

    45/144 (page 41)
    The Tanaidacea, which are all marine, and generally of very Table-case small size, are of great interest as preserving, along with the No‘ 6‘ Cnmacea, links of connection between the stalk-eyed or “ pod- ophthalmate ” type of the Mysidacea and the sessile-eyed or “ edriophthalmate ” Isopoda and Amphipoda. Order 4.—Isopoda. There is no distinct carapace. As a rule, only the first thoracic somite is fused with the head, and the other seven are Fig. 22. Bathynomus giganteus, about one-half natural size. (From Lankester’s “ Treatise on Zoology,” after Milne-Edwards and Bouvier.) [Table-case No. 6.] free. There are no exopodites on the thoracic limbs. The eyes, when present, are sessile. The body is usually flattened from above downwards. The abdominal appendages are lamellar and respiratory.