1(5 CARL BOVALLIUS, NEW ISOPODA. III. 



The heud is triangulär, trimcated unteriorly, not inirnersed, 

 raorc than twice as broad as loug (9:4); it is a little broader 

 tlian a third of the fourth pereional segment. 



The eyes are small, ovate, distant by two thirds of the 

 bredth of the hcad. 



The first ■pair of antennce (Pl. IV, lig. 41) are slender, 

 eight-jointcd, without distinction between pedunclc and fla- 

 ^■ellum. The first joiut is as long and broad as the second, 

 the last joint is lialf as long as the next preceding. Thcy 

 reach to the midth of the first pereional segment. 



Tlie second pair (Pl. IV, fig. 41) are longer than the iirst 

 pair, scarcely more slender, not compressed, nine-jointed, the 

 sixth joint the longest. 



The labrum is short, broadly roimded. 



The riumdihles (Pl. 1\', fig. 42) are short, robust, the free 

 end is half spirally bent,. ending into a simple, broad, gouge-like 

 tooth. The palp is uncommonly slender, the first joint is the 

 lonoest, the second two thirds of the first, armed with some 

 minute spines along the outer margin. The third is a little 

 longer than half the preceding, broadly ovate, provided with 

 some verv minute hairs. 



The fi]'st pair of inaxilla' are styliform comparatively 

 thick, armed at the tip with one strong tooth and two 

 spines. 



The second pair are thick, robust, of the same form as in 

 the preceding species. 



The rnacnUipeds are verv short, three-jointed, not reaching 

 to the tip of the maxillas. 



The pereion is verv convex, elliptical, the lifth segment 

 the broadest. The first segment is lonoer than the second, 

 the anterior margin is fully straight, without sinuations. The 

 second segment is the shortest, the sixth the longest. The 

 posterior corners of the first and second segments are rectan- 

 gular, feebly rounded; those of the third and fourth truncated, 

 rounded, those of the fifth rounded, those of the sixth feebly 

 produced, rounded, those of the scventh segment produced, 

 sliarjj-pointed. 



The epimerals (Pl. j\', fig. 40) of the second and third 

 segments are as long as the segments, rounded behind; those 

 of the fourth occupy a little more than half the length of 

 the segment; those of the fifth and sixth scarcelv half the 



