360 MEMOIRS OF THE CARNEGIE MUSEUM 



tlie latei-al angles being more ilistinct. Its transverse diameter is slightly greater 

 than the longitudinal. 



Antcnnula with a distinct, sharp spine on the lower margin of the basal joint. 



Anfennal pedunc/e with a distinct spine on the outer side of the first joint, and a 

 smaller, sometimes tuberculiforin spine on the second joint. Anfennal scale long, as 

 long as i-ostrum or slightly longer, reaching to the middle, or almost to the end of 

 the terminal joint of the antennal peduncle. Outer margin with a strong spine. 

 Laminar part rather broad, almost semicircular, the broadest part is slightly anterior 

 to the middle. 



Flagellwin reaching to the beginning of the fifth abdominal segment in both the 

 male and tlie female. 



.First pereiopods not very robust, comparatively longer in the male, shorter in 

 the female. Hand elongate-ovate, depressed, moderatelj^ wide. Surface punctate. 

 Inner margin almost straight, with a double row of tubercles. Outer margin 

 smooth, marginated and bluntl}' angular, but almost evenly rounded near the 

 proximal end. Fingers longer than palm, almost straight in the female, and meet- 

 ing all along their edges ; in the male, the fingers are slightly gaping at the base, 

 and the movable one is slightly curved in the shape of an " S," which curve is chiefly 

 noticeable along the outer margin. Outer margin of movable finger slightly tuber- 

 culate at base. Cutting edges with a few small tubercles near the base, for the rest 

 slightly pubescent. Upper surface of each finger with a low, longitudinal rib. 

 Lower surface of hand sparsely punctate. 



Carpiopodifc slightly longer than wide, shorter than palm, punctate, and with a 

 longitudinal sulcus on upper side. Inner margin with a strong, slightly procurved 

 spine in the middle ; generally there is a tubeix-le (rarely spiniform) anterior to 

 this spine. Lower surface with a low and broad tubercle in the middle of the 

 anterior margin, which is very rarely subspiniform ; a similar tubercle with a 

 spiniform tip at the articulation with the hand. No othei- spines or tubercles on 

 the carpododite, except that sometimes there is a small tubercle at the proximal 

 end of the inner margin. 



3Ieropodite smooth ; upper margin with two small, often indistinct, or tuberculi- 

 forin, spines near the distal end. Lower margin with two rows of spines; the outer 

 row consisting of only one, rarely of two, spines ; the inner row consisting of a large 

 distal spine, and a number (up to seven or eight) of very small ones, which may be 

 entirely absent. Thus there are often (jnl}' two antei-ior spines present, representing 

 the di.stal spine of each row. A small spine at the outer articular tubercle with 

 carpopodite. 



