360 MEMOIRS OF THE CARNEGIE MUSEUM 
the lateral angles being more distinct. Its transverse diameter is slightly greater 
than the longitudinal. 
Antennula with a distinct, sharp spine on the lower margin of the basal joint. 
Antennal peduncle with a distinct spine on the outer side of the first joint, and a 
smaller, sometimes tuberculiform spine on the second joint. Antennal scale long, as 
long as rostrum 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 sightly anterior 
to the middle. 
Flagellum reaching to the beginning of the fifth abdominal segment in both the 
male and the female. 
First pereiopods not very robust, comparatively longer in the male, shorter in 
the female. Hand elongate-ovate, depressed, moderately wide. Surface punctate. 
Inner margin almost straight, with a double row of tubercles. Outer margin 
smooth, marginated and bluntly 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. 
Carpopodite 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 tubercle (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 other spines or tubercles on 
the carpododite, except that sometimes there is a small tubercle at the proximal 
end of the inner margin. 
Meropodite smooth ; upper margin with two small, often indistinct, or tuberculi-- 
form, 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 only two anterior spines present, representing 
the distal spine of each row. A small spine at the outer articular tubercle with 
carpopodite. 
