190 BULLETIN OF THE 
flat, lightly granulated. The rest of the upper surface of the carapace has a 
coarser granulation. There is a conspicuous hooked tooth on the third and the 
fourth abdominal segment, and in some specimens there is a rudimentary one 
on the second and the fifth segment; the teeth on the third and fourth seg- 
ments have denticulated margins in adult specimens ; abdominal pleuræ long 
and narrow. Chelipeds very long, lightly tuberculate; chela long, slender, 
fingers rather short, smooth, with straight denticulated prehensile margins. 
The meri of the ambulatory legs granulated, superior border produced to a 
keel, the edge of which is entire; the lower margin of the meri is also en- 
tire ; the carpi have three tuberculated ridges, one superior, two external ; the 
propodi are lightly tuberculated ; dactyli smooth, their hind margin armed 
with about five teeth. Eye spineless, nearly hidden under the rostrum. An- 
tenn shorter than the carapace, first, third, and fourth joints armed with an 
external spine. 
Length, 30 mm.; carapace, 16 mm.; breadth, 9.5 mm.; rostrum, 5 mm.; 
cheliped, 40 mm.; merus, 13 mm.; carpus, 4.5 mm.; propodus, 17 mm.; 
dactylus, 7 mm. 
Station 3353. 695 lathoms. 2 males, 1 female ovig. 
Near M. longimana (Elasmonotus longimanus A. M. Edw.), from which it 
differs in having the rostrum more nearly plane, the merus of the cheliped 
much less strongly tuberculated, the meri of the ambulatory limbs more 
Strongly carinated, with lower margin entire instead of denticulate ; the spine 
on antennal peduncle is more prominent, while the tooth on she second seg- 
ment of the abdomen is absent or at best rudimentary. 
Two specimens (male) of Elasmonotus longimanus A. M. Edw., and one 
(female) Æ. brevimanus A. M. Edw., have been returned to Cambridge from 
Paris. I suspect that these may prove to be the male and female of one 
species. The chelipeds of the female specimen of M. cristatipes are lost. 
Munidopsis hendersoniana, sp. nov. 
In this species, as in M. armata (Elasmonotus armatus A. M. Edw.) and 
AM. marginata, (Elasmonotus marginatus Hend.), the lateral margins of the 
carapace are extended as sharp crests overhanging the sides of the body. The 
upper surface of the carapace is rather flat, and is clothed with a close short 
pubescence ; the sides are neatly parallel. The rostrum is long, acute, nearly 
horizontal, the upper surface roof-shaped. There is an acute tooth on the 
anterior margin of the carapace external to the eyestalk and another at the 
antero-lateral angle ; otherwise the carapace is unarmed. The eyestalks are 
immovable and prolonged into a long horn one half as long as the rostrum; 
seen from above, the eyéstalks appear like lateral spines of the rostrum. 
The eye is rudimentary, occupying the basal part of the lower side of the 
peduncle. The antenne are shorter than the body, the basal joint armed with 
a well developed inferior spine. The chelipeds are short robust and tomen- 
