240 
THE VOYAGE OE H.M.S. CHALLENGER. 
Ocypoda cursor (Linne). 
Cancer cursor , Linne (pt.), Syst. Nat., ed. xii. p. 1039, 1766. 
Ocypoda ippeus, Olivier, Voy. dans l’Empire Ottoman, Atlas, pi. xxx. fig. 1. 
„ „ Audouin, Explic. des planches in Savigny, Descr. de l’Egypte, Atlas, pi. i. fig. 1. 
„ „ Milne Edwards, Hist. Nat. Crust., vol. ii. p. 47, 1837. 
„ „ Moseley, Notes by a Naturalist on the Challenger, pp. 48, 49, woodcut, 1879. 
„ cursor , de Haan, Crust, in v. Siebold, Fauna Japonica, p. 29, 1835. 
,, ,, Milne Edwards, Ann. d. Sci. Nat., ser. 3, Zool. xviiL p. 142, 1852. 
,, ,, Kingsley, Proc. Acad. Nat. Sci. Philad., p. 182, 1880. 
„ ,, de Man, Notes Leyden Mus., p. 248, 1881. 
„ „ Miers, Ann. and Mag. Nat. Hist., ser. 5, vol. x. p. 378, 1882. 
,, „ Studer, Abhandl. d. k. Akad. d. Wiss. Berlin, Abh. ii. p. 13, 1882. 
Cape Verde Islands, St, Vincent, July 1873 (a large series of specimens, adult and 
young); St. Jago, Cape Verde Islands, August 1873 (an adult male). 
The largest male in the series from St. Vincent has the following dimensions : — 
Adult $ . 
Lines. 
Millims. 
Length of carapace, .... 
17 
36 
Greatest breadth of carapace, 
20£ 
43-5 
In the adult examples of large size, the pencil of setae borne at the end of the eye- 
peduncles, characteristic of this species, is long and thick ; in the smaller specimens, 
however, it is little developed, and in immature specimeus of small size no trace of it 
exists, and the eye-peduncles are rounded at the distal extremity. The stridulating 
ridge of the chelipedes, which in adult examples of both sexes is finely and evenly 
striated throughout its length, is absent from the very smallest examples in the 
Challenger series. 
Ocypoda arenaria (Catesby). 
Cancer arenarius, Catesby, Hist, of the Carolinas, vol. ii. p. 35, pi. xxxv., 1731, 1771. 
Ocypoda arenaria, Say, Journ. Acad. Nat. Sci. Philad., voL i. p. 69, 1817. 
„ „ Milne Edwards, Hist. Nat. Crust., vol. ii. p. 44, pi. xix. figs. 13, 14, 1837. 
„ ,, Kingsley, Proc. Acad. Nat. Sci. Philad., p. 184, 1880, and references to 
synonyma. 
„ „ Miers, Ann. and Mag. Nat. Hist., ser. 5, voL x. p. 384, pL xvii. fig. 7, 1882. 
,, rhombea, Milne Edwards, Hist. Nat. Crust., vol. ii. p. 46, 1837; Ann. d. Sci. Nat., 
ser. 3, Zool. xviii. p. 143, 1852. 
„ „ Dana, U.S. Explor. Exped., vol. xiii., Crust. 1, p. 322, pi. xix. fig. 8, 1852. 
Bermuda (an adult female), Bahia; shallow water (an adult male). 
Adult (J. 
Lines. 
Millims. 
Length of carapace, about 
1'4J 
31 
Breadth of carapace, .... 
37 
