OCR Text |
Show 1881.] THE SURVEY OF H.M.S. 'ALERT.' 73 are more distinct, and its lower margin is distinctly granulated. variety may be designated Eupagurus comptus, var. latimanus. MuNIDA GREGARIA. Galathea gregaria, Fabr. Ent. Syst. ii. p. 473(1793). Grimothea gregaria, Leach, Diet. Sci. Nat. xviii. p. 50 (1820); M.-Edw. Hist. Nat. Crust, ii. p. 277 (1837); id. in Cuv. R. A. (ed. 3), Atlas, pi. xlvii. fig. 2 ; Dana, Cr. U.S. Expl. Exp. p. 483, pi. xxxi. fig. 1 (1852); Cunningham, Trans. Linn. Soc. Zool. xxvii. p. 496 (1871). Munida subrugosa, Dana, /. c. p. 479, pi. xxx. fig. 7 (1852); Miers, Zool. Erebus and Terror, Cr. p. 3, pi. iii. fig. 2 (1874); id. Cat. New-Zeal. Crust, p. 68 (1876). Galathea subrugosa, Cunningham, /. c. p. 495 (1871). In the 'Catalogue of New-Zealand Crustacea,' I adduced certain reasons for believing that the Munida subrugosa of White and or Dr. Cunningham is nothing but the mature state of the long-known and exceedingly common Patagonian species Grimothea gregaria, Fabricius. There is considerable variation between younger and older individuals in the length of the external maxillipedes, spines of the antero-lateral angles of the carapace, and of the anterior legs. In the typical specimens of M. subrugosa from the Auckland Islands the rostrum is relatively longer and the antero-lateral marginal spines somewhat less numerous (7-8) than in the Patagonian form ; but the Museum has received adult specimens from New Zealand which agree in all respects with examples from the Magellan Straits. I was formerly inclined to think that the specimens referred by Dana to Mt subrugosa belonged to a distinct species ; but the larger series of specimens now before me would seem to show that I was wrong in that conclusion. The examples collected by Dr. Coppinger are from Sandy Point (seven females and one male), depth 7-10 fathoms, bottom sand and dead acorn-shells ; Cockle Cove, 2-32 fathoms, bottom mud (male, female, and young); Trinidad Channel, 4 fathoms (four males), bottom sandy (in this locality it was seen in great shoals). The males are generally of smaller size than the females. CALLIANASSA UNCINATA. Callianassa uncinata, M.-Edward?, Hist. Nat. Crust, ii. p. 310, pi. xxv. bis, fig. 1 (1837) ; Gay, Hist, de Chile, iii. p. 208 (1849) ; A. M.-Edw. Ann. Sci. Nat. (ser. 4) xiv. p. 301, pi. xvi. fig. 1 (1860); id. N. Archiv. Mus. Hist. Nat. vi. p. P3 (1870) ; Cunningham, I. c. p. 494 (1871). A single specimen, obtained at Talcahuano. ALPHEUS (BET^EUS) SCABRODIGITUS. Betceus scabrodigitus, Dana, Cr. U.S. Explor. Exped. xiii. p. 560, pi. xxv. fig. 12 (1852); Cunningham, I. c. p. 496 (1871). A male which I refer to this species was collected at Portland Bay at a depth of 10 fathoms ; another male and a female, plentifully |