Guide to the Crustacea, Arachnida, Onychophora and Myriopoda exhibited in the Department of Zoology, British Museum (Natural History) .. . s tangcri, male (below) and female (above). [Table-case No. 16.] The genus Maciophthcdmiis (Fig. 51) has already l)een men-tioned (p. 72) as having a superficial resemblance to the PortunidPodoplithahmis. The members of the family Iiiniothcridae are small parasiticor commensal Crabs, living in the mantle-cavity of bivalve Mollusca,in Ascidians or Echinoderms, or in coral-stocks. The shell isusually soft, and the eyes, antennules, and antennae much
Guide to the Crustacea, Arachnida, Onychophora and Myriopoda exhibited in the Department of Zoology, British Museum (Natural History) .. . s tangcri, male (below) and female (above). [Table-case No. 16.] The genus Maciophthcdmiis (Fig. 51) has already l)een men-tioned (p. 72) as having a superficial resemblance to the PortunidPodoplithahmis. The members of the family Iiiniothcridae are small parasiticor commensal Crabs, living in the mantle-cavity of bivalve Mollusca,in Ascidians or Echinoderms, or in coral-stocks. The shell isusually soft, and the eyes, antennules, and antennae much preparation is exhibited of a Sea-Urchin, Strongylocentrotns(jibbosiis, found on the coast of Chile. One lialf of the shell hasbeen cut away to show the Cnih ltii>ii(.foiUs cJuloisis lying in a 76 Guide to Crustacea. Table-case large pouch which is formed l)y enlargement of the terminal partNo. 16. qJ ^^j-^q Sea-Urchins intestine. The family Gonoplaciclac includes Crahs that in many respectsapproach the tribe Cyclometopa. The only British species rhomhoides. The small Crabs included in the family Hijmenosoniidnc have. Fig. pccHnlpcfi, reduced. ^Talile-case No. 16.] a more or less triangular front, and in other respects show someresemblance to the Oxyrhyncha. HaVtcarcinnH planattis, of whichspecimens obtained liy the Discovery Expedition at the Auck-land Islands are exhibited, is found throughout the whole of the Sub-Antarctic region, occurring at such distant points as theFalkland Islands, the Cape, Kerguelen Island, and NewZealand. Trilobila. Class 2. TRILOBITA. The members of this class are known only in tlie fossil state, Table-caseand are characteristic of the strata of the Palaeozoic era. Tliey ^^<^- ^^•are especially abundant in the Silurian and pre-Silurian the whole, they seem to be most closely related to theArachnida, and especially to the Xiphosura or King-crabs, but incertain features they resemble the Crustacea, an
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcrustacea, bookyear19
