If)] 13ECAP0DA FROM ALBATROSS DREDGlNGS. 349 



AciiELOUS GiBBESii Stlinpsou. 



Xe2)tuniis (rihbcuH A. M. -Edwards. 



Station 2107, November 1), north lat. 35° 19' 30", west long. 75© 15' 

 20", 10 fathoms. — Three specimens (5633), one male and two females, 

 one of which is carrying eggs. 



LEUCOSOIDEA. 



Persephone punctata Stimpson ex Browne. 



Station 2114, November 10, north lat. 35^ 20', west long. 75° 20', 14 

 fathoms, mud and broken shells. — One adult female (5G55), and two 

 very small young (5004). 



DORIPPIDEA. 



Ethusina, gen. no v. 



This genus is nearly allied to Ethusa, which it resembles closely ex- 

 cept in the form of the front and the structure of the eyes. The front, 

 between the eyes, is quadridentate as in Uthiisa, but the basal segments 

 of the antennuliB are very large and swollen, occupy the whole width 

 of the front, and crowd back the eyes and antennai into an almost 

 transverse position nearly beneath the outer orbital angles, which are 

 reduced to small lateral teeth far back from the front. The eye-stalks 

 are very small, and immovably imbedded in the orbits, which closely 

 jucjlose them to near the tips, except for a narrow space beneath. The 

 oral appendages are almost exactly as in Etlmsa microphthalma, but 

 there are no podobranchia? at the bases of the first gnathopods, so that 

 there are only six branchiie each side, two arthrobranchicB each at the 

 base of the second guathopod and first perasopod, and one pleurobrau- 

 chia each for the second and third peroeopods. 



Ethusina abyssicola, sp. nov. 



(Plate II, Figs. 1, la.) 



Male. — The carapax at the branchial regions is nearly as broad as the 

 length to the middle of the front, but much narrowed anteriorly, the 

 breadth of the front being about three-eighths of the length. The 

 middle teeth of the front are triangular, slightly upturned, and sepa- 

 rated by a triangular sinus a little broader and deeper than the rounded 

 antennular sinuses, while the lateral teeth are spiniform and longer 

 than the middle teeth but more strongly upturned, so that they scarcely 

 project in front of them. The surface of the carapax is nearly naked, 

 grauulous, and areolated very nearly like that of Ethusa microphthalma. 



The eye-stalks project very slightly beyond the minute post-orbital 

 teeth, taper distally, are armed with a longitudinal ridge below, and 

 bear at the tips black eyes much smaller than the diameter of the 

 stalks. 



The chelipeds are equal, smooth, and naked, and less than twice as 

 long as the carapax, the merus is about a third of the entire length, 

 .slender, unarmed, and without angles; the carpus is short, rounded 



