74 Mr. E. J. Miers on new Sjjecies of Crustacea. 



with the lines of union indicated on the sides by incised lines ; 

 last segment of the pleon convex, with the sides nearly straight, 

 and with a rounded emargination at its extremity, which is 

 about as wide as deep, Rami of the lateral appendages of the 

 pleon subequal, oval, entire, reaching nearly to the notch at 

 the extremity of the terminal segment. Colour reddish or 

 greyish brown, with darker spots. 



Length of the largest specimen nearly f inch. 



Hob. Kerguelen's Island, Swain's Bay and Royal Sound. 



Serolis latifrons. 

 Serolis latifrons, White, List Crust. Brit. Mus. p. 106 (1847). 



Convex, with a series of impressed lines and punctulations 

 near the posterior margin of each segment. Segments of the 

 pereion with the posterior margin sinuated, acute at the infero- 

 posterior angle, but not greatly produced backward (as in some 

 species of the genus). Terminal segment of the pleon large, 

 subtriangular, with a semicircular notch at its extremity, with 

 a high longitudinal central carina extending from the base of 

 the segment to the terminal notch, and with a less-elevated 

 carina on either side, rising near and continued for some 

 distance parallel to the base of the segment, then curving 

 backward and terminating before reaching the lateral margin. 

 Kami of the lateral appendages of the pleon narrow-acuminate, 

 the outer one very small, not half the length of the inner 

 ramus. Colour brown, with irregular paler patches. 



Length about 1 inch. 



Hab. Kerguelen's Island, Royal Sound ; Auckland Islands, 

 Rendezvous Cove {Lieutenant A. Smith, R.N., Brit. Mus.). 



Lysianassa Kergueleni, n. sp. 



Smooth. Eyes not visible. Superior antenna? subpyriform, 

 with the first joint large, robust, the second and third joints 

 short ; the secondary appendage short. Inferior antenna? 

 slender, longer than the superior, with the last two joints of 

 the peduncle longer than the preceding. Gnathopoda weak ; 

 the first pair short, subchelate ; the second pair longer, with 

 the dactylos rudimentary. Second pair of pereiopoda with 

 the coxge emarginate behind, and produced backward at the 

 infero-posterior angle. Third segment of the pleon produced 

 backward at its infero-posterior angle into a narrow subacute 

 lobe. 



Length \ inch. 



Ilab. Kerguelen's Island, Royal Sound. 



