14 CARL BOVALLTUS, NEW ISOPODA. III. 



thick, thc first joint loiig, thicker than thc mandiblc itself, the 

 second joint thick, a little shorter tlian the first, the third 

 much shorter, thick, rapidly tapering, provided with three to 

 four bristles at the tip. 



The first pair of maxilloi (Pl. III, fig. 33) are styliform, 

 tippcd with three spine-like teeth feebly bent at the end. 



The second pair (Pl. III, fig. 34) are tubiform, soft, the free 

 maro"ins bordered witli miiiute teeth and some few short hooked 

 spines. 



The maxillipeds (Pl. III, fig. 35) are robust, the last joint 

 shoTt, armed with three to four short hooked spines. 



The pereion; the first segment is longer than the second; 

 the sixth the longest, the seventh is scarcely longer than half 

 the sixth. 



The epimerals (Pl. III, fig. 30) are small, the ones of the 

 second and third segment are as long as the segments, the 

 succeeding do scarcely occiipy more than half the length of the 

 corresponding segments. 



The pereiopoda (Pl. III, fig. 36 and 37) are increasing in 

 length backwards. The dactyli of the first four pairs are 

 constricted at the base, and strongly enlarged immcdiatly below 

 the constriction. 



The pleon is scarcely longer than the sixth pereional 

 segment; thc first segment is almost totally concealed, the 

 succeeding subequal in length. 



The pleopoda are very large and thick. 



The urus is broader behind the middle than at the base, 

 nearly twice as long as broad at the base (9 : ö), longer than 

 the pleon and thc last pereional segment. 



The uropoda (Pl. III, fig. 38) reach beyond the urus; the 

 rami are elongate, rounded behind, fringed with minute hairs. 

 The inner ramus is a little longer and broader than the oiiter. 



Colour. Greyish white, almost hyaline, with fine arborescent 

 spöts of dark green. 



Length. 23 mm. 



Hah. The coast of the Philippine Isles. (C. B.) 



