♦64 Paracorophium, Camacho 



Antenna 2 robust; flagellum slight, of more than 3 joints. Mandible with 

 3-jomted palp, Gnathopod 1 as in Corophium (p. 685). Gnathopod 2 nearly 

 as in Corophium, but the long process of 4^^ Joint fringed on its front or 

 inner margin, while the 5**^ is fringed on its hind margin, the 2 joints there- 

 fore, though titting together, having no look of coalescence ; 6^^ Joint with 

 small palm. Peraeopod 3 the shortest, setose; 6*^ Joint with strong spines. 

 Peraeopods 4 and 5 successively much longer. Peraeopods 3 — 5, 2^ Joint 

 widely expanded. Uropod 1, and still more uropod 2, stout, with strong 

 spines, biramous. Uropod 3 small, outer ramus nearly as long as peduncle, 

 inner oval, minute. Telson entire, short. 



1 species. 



1. P. excavatum (G. M. Thoms.) 1884 Corophium e., G. M. Thomson in: Tr. 

 N. Zealand Inst., v. 16 p. 236 t. 12 f. 1—8 | 1899 C. e., Paracorophium, T. Stebbing in: 

 Ann. nat. Hiit., ser. 7 v.'d p- 241, 350. 



Pleon Segments 4 and 5 are dorsally coalesced (in figure). Head with 

 small rosti'al point, lateral lobes narrowly rounded. Eyes small, round, on 

 lateral lobes. Antennae 1 and 2 subequal, more than V» a-s long as body. 

 Antenna 1, 1^* and 2"^ joints long, 1^* much the longer (figure), 3*^ very 

 Short; flagellum as long as peduncle, 10-jointed. Antenna 2, joints of peduncle 

 Short and thick; flagellum short, 6-jointed. Mandibular palp longer than trunk, 

 1^* Joint rather long. Gnathopod 1 rather small, 3** Joint short, with tuft 

 of long setae, 4*^^ very short, b^^ long, fringed with long setae on hiad 

 margin, 6*^ rather shorter, slightly widened distally; palm transverse, finger 

 scarcely overlapping it. Gnathopod 2 rather longer, slender; 4*^ Joint produced 

 into a scoop-like process, fringed on each margin with long setae, and into 

 which the carpus [5*'' Joint] is fitted closely when the limb is folded; 5*^ Joint 

 slightly widened distally, densely fringed along hind margin, 6*'^ subequal to 5*^, 

 margins nearly parallel, hind produced into a small tooth; palm transverse, 

 sinuous, much overlapped by the finger. Peraeopods 1 and 2 rather short, 

 simple, nearly destitute of spines or set^. Peraeopod 3, 2^ Joint piriform, 

 4*^ longer than b^^ or 6^^, 6^^ with a row of strong spines along the reverted 

 front margin; finger short. Peraeopod 4 twice as long as 3*^; peraeopod 5 

 still longer, finger as in 3*^ and 4*^ reverted. üropods 1 and 2 each with 

 strong spines on peduncle and rami. Uropod 3 with peduncle as broad as 

 long, and carrying a few setae but no spines; inner ramus not half as long 

 as outer. Telson broader than long, apically rounded. Colour dirty grey. 

 L. 4 mm. 



New Zealand (Brigbton Creek (salt water) near Dunedin). 



3. Gen. Camacho Stebb. 



1888 Camacho (Sp. un.: C. bathyplous), T. Stebbing in: Rep. Voy. Challenger, 

 V.29 p. 1178. 



Head, mouth-parts, peraeon with its side-plates and gnathopods 1 and 2 

 ( 9 ) nearly as in Xenodice (p. 699), but diff'ering as follows. Mandible with 

 spines in spine-row numerous. Maxiila 1, inner plate with a Single apical 

 seta. Maxillipeds with finger of palp as long as the 3^ Joint. Antenna 1 

 with elongate 1^* Joint (the rest unknown). Pleon segment 4 not especially 

 elongate. Pleopods, peduncle distally widened. Uropods 1 — 3 biramous. 

 Uropod 3 with short broad peduncle and small rami, the outer longer than 

 the peduncle, the inner minute. Telson simple. 



1 species. 



