38 PROCEEDINGS OF THE NATIONAL MVSEVM. 



The epimera of the second and third segments are long and narrow, 

 and extend the whole length of the lateral margin of the segments. 

 The epimera of the fourth and fifth segments are short and pointed 

 posteriorly, and extend only half the length of their respective seg 

 ments. The epimera of the sixth segment are pointed posteriorly and 

 extend three-fourths the length of the segment; those of the seventh 

 segment are rounded posteriorly and extend fully to the posterior 

 margin of the seventh segment. 



The abdominal segments are short but full}' as wide as the thoracic 

 segments. The terminal segment is transverse, about twice as wide 

 as long, with the posterior margin widely rounded. 



The uropoda are narrow oar-like appendages, somewhut tapering 

 toward the extremity, which is rounded. The outer branch is a little 

 longer than the inner l)ranch and extends almost to the posterior 

 margin of the terminal abdominal segment. 



The legs are all similar, with the exception that the carina of the 

 basis is very high on the four posterior pairs. 



This species ditfers from L. caudata Schioedte and Meinert" from 

 Japan in the fact that the carina of the basis is mucli higher than in 

 that species; in the longer uropoda, the outer branch being the longer 

 one in L. proplnqua^ while the reverse is true in L. caudata Schioedte 

 and Meinert; and in the transverse terminal segment. 



Three specimens were obtained by the U. S. Fish Commission steamer 

 Albatross at Port Heda, Japan. 



Type.~Q,2X. No. 29086, U.S.N.M. 



Family SPH.FROMID.F:. 



CYMODOCEA ACUTA, new species. 



Surface of body smooth; color white with numerous black dots. 

 Head large, broader than long, with prominent median point. 

 Eyes large, situated in the post-lateral angulations, the 

 ocular lobes extending some distance beyond the pos- 

 terior margin of the head. First pair of antenna extend 

 almost to the posterior margin of the first thoracic seg- 

 ment; first two joints of peduncle large, dilated, the 

 first one long, the second very short; third joint long 

 and slender; flagellum composed of about seventeen 

 joints. Second pair of antcnnte reach the posterior mar- 

 Fig. 8.— CYMODo- gin of the second thoracic segment; flagellum composed 

 of about twenty joints. 



First segment of thorax is twice as long as any of the 

 others. The following six segments are subequal in length. The 

 lateral parts of all the segments are produced in narrow, acute angu- 

 lations. The epimera are indicated by faint suture marks. 



CEA ACUTA, NEW 

 SPECIES. X 3. 



« Naturhistorisk Tidsskrift, (3) XIV, 1883-84, pp. 360-362, pi. xv, ligs. 1-2. 



