no. 1701. NORTHWEST PACIFIC ISOPODS—RICHARDSON. 



89 



those of the fourth and fifth segments, extend to the posterior margin 

 of the segment. The posterior extremities are rounded. 



The abdomen is deeply immersed in the seventh thoracic segment. 

 The first four segments are about equal in length, each being 1 mm. 

 long. The fifth segment is 1^ mm. long. The sixth, or terminal, 

 segment is wider than long, being 10 mm. : 6^ mm. It is posteriorly 

 rounded. The outer branch of the uropoda is a little wider and a 

 little longer than the inner branch. The outer is oval in shape, the 

 inner more tapering. They are shorter than the abdomen, and do not 

 reach its extremity. The outer branch is 1 mm. 

 wide and 2^ mm. long. 



All the legs are prehensile; the last four are 

 furnished with a rather high carina. 



Two specimens, both females, were collected 

 at Hakodate, Japan. The second specimen has 

 twelve articles to the second pair of antennse, 

 but is otherwise similar to the first. 



The species is very close to Livoneca propinqua 

 Richardson,^ but differs in its larger size, in the 

 shape of the head, the larger seventh epimera, 

 the longer abdomen, and the differently shaped 

 carina on the last four pairs of legs. 



It is also similar to Livoneca raynaudii Milne 

 Edwards, 5 but differs in the shape of the head 

 and the epimera. 



This species differs from Livoneca caudata 

 Schicedte and Mienert G in the more rounded head, in the larger and 

 more conspicuous epimera of the seventh segment, in the narrower 

 abdomen as compared with the width of the thorax, in having the 

 outer branch of the uropoda slightly longer instead of shorter than 

 the inner branch, and in having a rather high carina on the basis of 

 the last four pairs of legs. 



Type-specimen.— Cat. No. 39504, U.S.N.M. 



Fig. 13. — L ivoneca 

 epimerias. X 1.86. 

 (Drawn by Miss V. 

 Dandridge.) 



Family SPH^ROMID^. 

 Genus TECTICEPS Richardson. 



TECTICEPS RENOCULIS, new species. 



Body oblong-ovate, very broad, 20^ mm. in length and 13 mm. in 

 width. Surface minutely granulate. Color pink, with the lateral 

 margins becoming white. 



a Proc. U. S. Nat. Museum, vol. 27, 1904, pp. 87-38. 



6 Hist. Nat. Crust., vol. 3, p. 262.— Schioedte and Meinert, (3), vol. 14, 1883-84, 

 pp. 367-372, pi. 15, figs. 9-10. 



c Naturhistorisk Tidsskrift, (3), vol. 14, 1883-84, pp. 360-362, pi. 15, figs. 1-2. 



