NO. 1350. NATURAL HISTORY OF THE ISOPODA— RICHARDSON. 



37 



.some of the joints, while in ('. /thil/>ex the spines are inor(^ mnneroiis 

 on the ni:irii"ins and oronpod togethei' in rows on the ischium, meriis, 

 and cai'})us; and the posterior niar*>in of the terminal seo"ment of the 

 abdomen is armed with ten rather than sixteen spines. 



This s[)eeies differs from C. .svhiodfr! Miers" in the foi-m of the 

 frontal lamina (interantennal plate), which in the hitter species bears 

 a strong' tooth at its anterior extremit}'. 



It differs from (\ trntitsfyUs Miers in not having- the first thoracic 

 segment greatly longer than the other segments. 



From (J. /v>.sW/ Miers '' it differs in the form of tlie eyes, which in 

 that species are narroAV-oblong, and extend "along the sides of the 

 head from the front margin of the first seg'uient of the bod}' nearly to 

 the bases of the antenna?.'' 



Family CYMOTHOID.E. 



LIVONECA PROPINQUA, new species. 



Body broad, with sides subparallel, twisted either to right or left. 

 Abdomen not narrower than thorax. Color, dark yellow. 



Head small, triangular; front produced in an obtuse point; posterior 

 margin straight. Eyes moderately larg-e, oval, 

 and situated at the lateral angles of the head. 

 First pair of antennw extend nearly to the 

 antero-lateral angles of 

 the first thoracic seg- 

 ment; each consists of 

 seven joints. Second 

 pair of antenna? reach 

 the posterior margin 

 of the head; each is 

 composed of thirteen 

 joints. 



First thoracic seg- 

 ment c o n s i d e 1" a b 1 y 

 longer than any of the 

 others. The antero- 

 lateral angles of this 

 segment extend up 

 around the head on 

 eith<a* side; the poste- 

 rior angles are widely rounded. The other thoracic segments are 

 about equal in length, the seventh segment being somewhat shorter. 



"Zoological Collections of H. M. S. AUrt, 1884, jip. 302-S04, ])1. xxxiii, %. a, and 



pi. XXXIII, fig. K. 



''Catalogue of the Stalk and 8essile-eyed Crustacea of New Zealand, 1876, p. 109, 

 pi. HI, fig. 3. 



Fig. 6.— Livoneca PROpiNQrA, 



NEW SPECIES. X 3. 



Fig. 7.— Livoneca propinqua. 

 (1, leg of fifth pair; b, leg 

 OF SIXTH pair; c, leg OF 



SEVENTH PAIR. X 10. 



