PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 521 



Description. — Anteunules with the first joint of the pediiucle uot quite 

 as long as the second. Two anterior segments of pleon, with infero- 

 posterior angle acute; third segment with this angle acute and pro- 

 duced ujiwards. Second and third segments of pleon armed with a 

 single tooth, each, on posterior margin, fourth with three, fifth with 

 four teeth, all very small. Hand of first gnathoi>od oval and fringed 

 with long hairs on the posterior margin. Hand of second gnathopod 

 in male broadly oval, armed on the edge with three to four blunt teeth 

 and running out into a broad blunt tooth ; claw large, curved, and«citfe, 

 shutting on the inside of the palm. Inner ramus of the last pair of 

 saltatory feet ovate. Color purple, with a lighter streak down the 

 middle of the dorsal surface. 



Locality, beach near the station. Abundant. 



Museum Nos., 7893, 7894, 7895. 



5. Melita leonis, ii. sp. 



This species is closely allied to M. dentata, but differs in the denticu- 

 lation of the segments of the pleon, and in the length of the anten- 

 nules. 



Description. — Eyes small, oval, black. Antennules reaching to the 

 first segment of the pleon, with the first joint of the peduncle a little 

 shorter than the second. Third segment of the pleon with infero- 

 posterior angle acute and produced upwards; First and second seg- 

 ments of pleon with one large median tooth on the posterior edge, and 

 eight fine denticulations, the latter larger on the second segment; third 

 with nine teeth, of which the median one is largest; fourth with five; 

 fifth with six, lacking the median tooth; sixth with two small blunt 

 teeth. Hand of first gnathopod oval, shorter than the carpus; claw 

 simple, curved. Second gnathopod with infero posterior angle of third 

 joint not produced into a tooth ; hand elongate-oval, edge not toothed. 

 Color purple with two lighter streaks along the dorsal surface. 



Locality, head of Xorton Sound, 5 fathoms, September 12, 1883. 

 Abundant. 



Museum Nos., 7890, 7897. 



Named from the schooner "Leo "of San Francisco, from which vessel 

 the specimens were obtained by dredging. 



6. Dulichia arctica, u. sp. * 

 Description. — Head slightly produced, forming an obtuse angle. First 



epimeron produced into a sharp spine projecting forward, the rest un- 

 armed. Body smooth. Basa of second gnathopods dilated and armed 

 with two teeth ; hand large, subtriangular, and armed on the edge with 

 two long stout teeth. Basa of first two pairs of pereiopods produced 

 into stout teeth. Last three pairs of pereiopods not specially long ; 

 third joint as long as the fourth and fifth together. Second pair of 

 saltatory feet with outer ramus nearly twice as long as the peduncle; 

 inner a little longer. Eyes small, round, and black. Color, grayish. 



