192 PROCEEDINGS OF THE ACADEMY OF [1894. 



Description. — Total length of the greater specimen 123 mm., 

 breadth 42 mm., of the smaller 103 mm. and 36 mm. The whole 

 upper surface finely granulated and punctured. 



Frontal margin, in the middle, feebly sinuated, with a short pro- 

 cess bent downwards. Eyes placed in the lower surface of the head, 

 beneath the frontal margin, which is distinctly raised. Lamina 

 frontalis equilaterally triangular, the angles rounded, the anterior 

 meeting with the frontal process. Clypeus produced forward as a 

 blunt, triaugular projection, extending over the frontal margin so as 

 to be visible from above, its longitudinal diameter greater than that 

 of the labrum. The stalk of the antennulae has three joints, the 

 flagellum is about as long as the stalk, with nearly thirty joints. 

 Stalk of the antennae five-jointed, the first joint short and concealed. 

 Flagellum in both specimens mutilated, the longest fragment has 

 twenty-five joints, and reaches to the posterior margin of the first 

 segment of the trunk. 



Segments of the body finely punctured, the first as long as the 

 head, the others considerably shorter, decreasing a little from before 

 to behind. The first and second epimera nearly alike, not produced 

 posteriorly, the four following posteriorly acutety produced, especi- 

 ally those of the fifth, sixth and seventh segments. The three an- 

 terior pairs of feet stout, second joint (see Hansen) not thickened, 

 third longer than broad, fourth with the inner margin thorny, the 

 process of its outer margin reaching to the middle of the sixth joint 

 (but in the first pair of feet very short), sixth joint elongated and 

 curved. The four following pairs of legs similar to each other, in- 

 creasing in length. Second joint not remarkably thickened or en- 

 larged. Third joint distally enlarged, the anterior margin with 

 prickles, similar prickles at the anterior margin of the fourth and 

 fifth joints. Sixth joint but little longer than the fifth, narrow. 



Segments of the pleon evenly arched, the lateral angles of the 

 second to fifth produced posteriorly and provided with a longitudinal 

 ridge, those of the third segment longest. Pleopoda with roundish, 

 almost equal branches, carrying at the hinder part of their bases the 

 tufts of branchiie characteristic of the genus, but since both are dried 

 specimens the pleopoda and the branchiae have become crumpled, 

 and therefore it is impossible to give the details. 



Last segment (telson) punctured and finely granulated, at the 

 base but little larger than long, the lateral margins somewhat con- 



