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Pontocrates altamarinus (Sp. Bate). 



(Suppl. PI. VII, fig 2). 

 Krayera altamarma, Sp. Bate & We.stwood, Brit. sess. eyerl Crust., p. 1)7. 



Body .somewhat less robust than in the preceding species, with the seg- 

 ments less sharply marked off dorsally. Cephalon exceeding in length the first ^1 

 segments of mesosome combined, dorsal face somewhat flattened, rostrum eompai'a- 

 tively more projecting than in I', norvegicus, and but slightly defiexed, lateral 

 corners obtusangular. Anterior pairs of coxal plates less irregular in shape ; 

 1st pair considerably expanded distally with the terminal edge evenly curved; 

 the 2 succeeding pairs nearly of equal shape, both being narrowly truncated 

 at the tip; 4th pair having the infero-posteal corner rather much produced. 

 Eye comparatively large and somewhat protuberant, with yellowish red ])ig- 

 ment. Antennae in both sexes rather unequal, though more so in male than 

 in female. Superior antennae in female equalling in length the cephalon and 

 the first 3 segments of mesosome combined, 2nd joint of the peduncle rather 

 slender and elongated, fully equalling the 1st in length, flagellum much shorter 

 than the peduncle, and composed of 8 articulations. Inferior antennnte in 

 female nearly twice the length ot the superior, last joint of the peduncle the 

 longest, flagellum exceeding in length the peduncle. Antennae in male modi- 

 fied in a manner similar to that in P. norvegicus. Anterior gnathopoda with 

 the propodos rather large, oval fusiform in outline, with the palm obliquely 

 curved and mixch longer than the hind margin, its edge densely fringed with 

 very small curved spinules and a few slender bristles, carpal lobe not project- 

 ing beyond the propodos. Posterior gnathopoda somewhat less slender than 

 in P. norvcgiruR, propodos slightly tapering distally, thumb of the chela but 

 little broader than the dactylus, and fringed with small curved spinules similar 

 to those occurring on the palm of the anterior gnathopoda, carpal process but 

 slightly projecting beyond the latter. The 2 anterior pairs of pereiopoda less 

 rolnist than in the said species, but very densely setiferous, meral joint rather 

 expanded, carpal joint elongated, propodal joint linear, with the dactylus very 

 small. The 2 succeeding pairs of the usual structure. Last pair of pereiopoda 

 considerably~exceeding half the length of the body, basal joint of a rounded 

 quadrangular form, with the posterior edge slightly convex. Last pair ot 

 uropoda with the rami exceedingly narrow and without any denticles. Telson 

 oval in form, with the tip very slightly insinuated in the middle. Body semi- 

 pellucid, marbled along the dorsal face with an opaque light yellowish ])ig- 



