184 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1885. 



ineriis and carpus are subequal in lengtli ; and tbe eliela is fully tbree- 

 fourtbs as long as tbe carpus. Tbe second peraeopods are sligbtly com- 

 ])ressed and reacb to about tbe middle ot tbe antenual t^cales; tbe car- 

 l)us is sligbtly longer tban tbe merus, and tbe cbela is more slender 

 and sligbtly longer than in tbe first pair, and a little more tban balf 

 as long as tbe carpus. Tbe tbird ])er[Eopods are much more slender 

 tban tbe second, and reacb to about tbe tips of tbe antenual scales ; 

 the carpus is about a fourth longer than the merus, and the chela is 

 much longer and more slender tban in tbe second and less tban balf as 

 long as tbe carpus. Tbe fourth i)erajopods reach slightly by the bases 

 of the cbebe of tbe tbird ; the carpus is very little shorter than tbe 

 merus ; the propodus less than balf as long as the carpus, and the 

 dactylus is about three-fourths as long as tbe propodus. Tbe fifth per- 

 jEopods are more slender and more than a balf longer than the fourth ; 

 tbe merns, carpus, and propodus are ap roximately equal in length, 

 and the dactylus only sligbtly more tban a fourth as long as the propo- 

 dus, although very little longer than in tbe fourth. 



Tbe third somite of the pleon is compressed dorsally, the fourth, fifth, 

 and sixth aresharidy carinated, and tbe posterior margins of the tbird, 

 fourth, and fifth are incised in the middle. The sixth somite is very 

 short, not more tban a fourth longer than the fifth, and about five- 

 eighths as high as long. 



Tbe telson is about as long as tbe sixth somite, has a conspicuous 

 dorsal sulcus, which becomes broad and shallow posteriorly, and the 

 margins of which terminate in a small spiniforra process either side of 

 the long and rather broad but apparently acute tip. Tbe inner lamella 

 of tbe uropod is shorter tban the telson, ovate-lanceolate, and a little 

 more tban a fourth as broad as long. The outer lamella is a little longer 

 than the telson, about a third as broad as long, and semi-elliptical, the 

 outer margin being strafght. 



Measurements in millimeters. 



Catalogue Huuiber -• 7'267 



Station ■ 1047 



Six 5 



Length from tip of rostrum to tip of telson 50 



Lengtji of carapax iuckuling rostrum 16. 8 



LengI h of rostrum 3. 6 



Height of carapax 8.8 



Breatlth of carapax 7. 



Length of eye-stalk and eye 3. 3 



Greatest diameter of eye '2. 2 



Length of autennal scale 9. 2 



Breadth of anteunal scale 2.5 



Length of second gnathopod 23 



Length of first perieopod 16. 5 



Length of carpus - 4.0 



Length of chela 3. 1 



Breadth of chela 0. 9r> 



