206 THE VOYAGE OF H.M.S. CHALLENGEK. 



varieties are thus mentioned. " Var. a, coralUnus. Var. h. vioJaeeus." In Order 4, Lemodi- 

 podi, are given CapreUa phasma, Caprella linearis, Caprella acutifronx. Ancms forficu- 

 lariiis and Praniza axndcfda are now placed in the 5th Order, Isopodi. 

 To jud"e by the figure Costa's Gaminarus fascialus must belong to the Meera and Melita group. 

 It is not mentioned in the Brit. Mus. Catalogue, and is quite distinct from the earlier 

 Gainmarus faseiafms, Say, which is there dessribed and figured. The three last segments 



of the peraion and the three first of the pleon are 

 3 dorsally produced backwards into small teeth, the 



fourth and fifth of the pleon into large ones. The 

 side-plates of the perseon are represented as low and 

 all nearly alike. The lower hinder angle in the first 

 three segments of the pleon is produced sharply back- 

 Fig. 2-3. wards. The upper antennae have a long peduncle, the 

 first joint long, the second still longer, the third not 

 very short. No secondary appendage is shown. The second gnathopod has a large hand, 

 with bidentate palm. The fourth perseopod is rather longer than the fifth. The first 

 joints arc but slightly dilated. The branches of the third uropods extend far beyond those 

 of the second and third. In spite of some differences it seems tolerably clear that this is 

 the Ceradocus orchestiipes of Achille Costa, said by him to have been " found by Prof. 

 0. G. Costa in the Gulf of Tarentura," though he gives no reference to Gainmarus fascicdus. 

 Since the name Gainmarus fasciatus lapses as pre-occupied by Say, and since Ceradocus 

 is recognised by Heller as identical with Msera, O. G. Costa's species will become a synonym 

 of Msera orchestiipes, A. Costa. 



1844. De Kay, James E. 



Zoology of New-York, or the New- York Fauna ; comprising detailed descriptions 

 of all the animals hitherto observed within the state of New-York, with brief 

 notices of those occasionally found near its borders, and accompanied by aj)propriate 

 illustrations. Part VI. Crustacea. Albany, 1844. 



The Crustacea belonging to " Order III. Amphipoda," and " Order IV. Lcemipoda," are described 

 on pages 35 to 41. In the preliminary list of works consulted, no mention is made of 

 Eafinesque, on whose lucubrations, had he seen them, this author might have thrown much 

 light. De Kay includes in his definition of the Amphipoda the old statement not univer- 

 sally applicable, that the mandibles are furnished witli a palpus. Of the species which he 

 figures his descriptions are probably independent, though only one of the species is new. 

 For Orchestia loTigicornis, Say, " PL IX. fig. 28 & 28a. Female," he says : — " Eyes oval. 

 Lower antennae longer than the body ; the third joint, under the lens, armed with series of 

 short spines, the fourth joint, with about thirty articulations, minutely spinous beneath. 

 Second pair of feet with the hands dilated, oval, smooth, with two obtuse spines on the 

 anterior margin ; one at the lower angle, and the other more elevated in the middle ; the 

 thumb much curved, acute at its tip, which rests on the interval between the two tubercles 

 (see fig. 28, a.). The two posterior pairs of feet longest. Upper pair of antennae short, 

 not extending beyond the second joint of the lower pair. Length, 0'5-rO. These small 

 crustaceans are well-known under the name of Sand-fea or Beach-flea, occurring along the 

 shores of Long island, digging holes in the sand in which they conceal themselves, ami 

 Uving upon dead animal substances. They furnish an abundant supply of food to the 

 numerous birds along that coast." 



