588 



4. Ischyrocerus anguipes, Kioyer. 



(PI. 209). 



lachyrocerus (nif/uipes, Kroj'ei', Gronl. Amphip., Danske Vid.-Selsk. Afh Vil, p. 2S3, PI. Ill 



fig. 14. 



Syn: Gaminai'us zebra, Rathke. 

 » Podocerus anguipes, aut. 



Body rather slender, especially in the male, with the back evenly 

 rounded throi^gliout. Cephalon about the lengtli of the iirst 2 segments of 

 mesosome combined, lateral lobes obtusely angular, with the inferior edge 

 gently carved. Coxal plates in female successively increasing in size to the 

 4th pair, which are considerably deeper than the corresponding segment, 5th 

 pair witli the anterior lobe nearly as deep as the preceding pair; those in 

 male comparatively less deep and also less une([ual in size, the 2nd pair 

 being fully as broad and nearly as deep as the 4th. Last pair of epimeral 

 plates of raetasome obtusangular. Eyes comparatively small, rounded, placed 

 near the lateral lobes of the cephalon, pigment dark brown. Superior antennae 

 somewhat exceeding in length Vs of the body, 2nd joint of the peduncle the 

 longest, 3rd joint much longer than the 1st, Hagelhim scarcely exceeding halt 

 the length of the peduncle, and comjjosed of G articulations, accessory 

 ajjpendage nearly as long as the 1st articulation of the flagellum, and 

 biarticulate, the terminal joint very small, Inferior antennge in female but 

 little longer than the superior, last joint of the peduncle somewhat longer 

 than the penultimate one, Hagellum about the length of the latter joint and 

 5-articulate; those in male much more elongated than in female, and rather 

 strongly built, with the last 2 joints of the «- peduncle about equal-sized, 

 each being much longer than the flagellum. Anterior gnathopoda in both 

 sexes rather feeble, propodos somewhat expanded, with the lower edge evenly 

 curved, and armed with 2 small spines near the middle. Posterit)r gnathopoda 

 in female of aboiit same shape as the anterior, though somewhat larger; 

 those in male very large and, when fully extended, about half the length of the 

 body, meral joint produced in front to a narrow mammilliform projection, 

 propodos very much elongated, and nearly of equal breadth everywhere, 

 heing distinctly curved, with the upper edge boldly convex, the lower, concave 

 and densely setous, palm not defined, but ])roduced in front to a narrowly 

 truncated prominence, flnely denticulated at the tip, dactylus fahiiform, with 

 the inner edge slightly bulging in the middle. Pereiopoda rather strongly 

 built and edged with fascicles of stiff bristles, basal joint of the 3 posterior 



