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Show 576 MR. L. A. BORRADAILE ON CRUSTACEANS [May 22, Subfamily T H I I N *. Genus KRAUSSIA Dana, 1852. 13. KRAUSSIA RASTRIPES Muller, 1887. Kraussia rastripes, Muller, Verh. Nat. Ges. Basel, viii. 2, p. 480, pi. iv. fig. 5 (1887). The ridges on the moveable finger of the specimen are not so distinctly tuberculated as in Miiller's figure. Botuma; one female. Family CANCRID*. By the removal of the subfamilies of the Atelecyclidae, the family Cancridae becomes restricted to the Cancrinae and Piri-melinae, with perhaps also the Carcinidinae ( = Carcininae). Thus narrowed it is essentially a circumpolar group, and it is not surprising that it is unrepresented iu the present collection. Family PORTUNID*. The following tables, showing the schemes of classification adopted by Ortmann1 and Alcock2 respectively, make it clear that there is a considerable difference of opinion between the authors in question, though in the main they may be said to be in accord. Alcock. Subfamilies. Portumninae. Portuninae. Caphyrinae. Lupinae. Alliances. Carcinoida. Portumnoida. Portunoida. Ccenophthalmoida. Lupocycloida. Lupoida. Podophthalmoida. Ortmann. Subfamilies. Portumninae. Portuninae. Carupinae. Thalamitinae. Podophthalminae. Roughly speaking Ortmann's subfamilies correspond to alliances in Alcock's classification, but there is considerable divergence in detail. Neither author refers to the somewhat remarkable genus Goniocaphyra de Man, which is not only impossible to place in any subfamily of either author as defined, but appears to have a distinct standing of its own, and to deserve a separate subfamily for its reception. 1 Ortmann, Bronn's ' Thier-reich,' v. 2, p. 1170 (1899). 2 Alcock, Journ. Soc. As. Beng. lxviii. 2, i. p. 6 (1899). |
