MUNIDOPSIS CARINIPES. 97 
Munidopsis quadrata Fax. 
Plate XX Higa lag Lolo 
Munidopsis quadrata Fax., Bull. Mus. Comp. Zodl., XXIV. 188, 1893. 
Elasmonotus quadratus A. M. Epw. et Bouy., Aun. Sci. Nat., Zool., 7¢™° Sér., XVI. 281, 282, 1894. 
Carapace quadrangular, the anterior and lateral margins forming a right 
angle ; upper surface flat, spineless, but furnished with low squamous tuber- 
cles. Rostrum curved upward, broad at base, narrowing anteriorly to form 
along sharp acumen. Central part of gastric region prominent above the 
anterior branchial lobes, from which it is separated by deep pits. A promi- 
nent transverse ridge on cardiac region forming the posterior wall of a deep 
fossa. Antero-lateral angles rounded. Second segment of abdomen armed 
with a median spine, which is curved forward ; third and fourth segments 
with a very prominent ridge, which bears an acute median tooth; pleure of 
second segment faintly tuberculate, the others narrow, with the external 
angles rounded but not truncate. Eye spineless, almost concealed by the 
base of the rostrum. Antennz about as long as the carapace ; a conspicu- 
ous spine on the upper side of the third segment. Cheliped long, tubercu- 
late, with the exception of the fingers; chela slender, fingers not gaping. 
Ambulatory legs tuberculate, with the exception of the dactyli, which are 
furnished with small teeth on their posterior margins, 
Length of body, 29 mm.; length of carapace, 15.5.mm.; breadth of cara- 
pace, 9 mm.; length of rostrum, 6 mm. ; length of cheliped, 30 mm. 
There is some variation in the length and upward curvature of the ros- 
trum among the different specimens. A female from Station 3424 (Plate 
XXIUIL., Fig. 1°), differs markedly from the males, in having the tubercles on 
the carapace and appendages much more strongly developed. 
Station 3424. 676 fathoms. 2 males, 1 fem. ovig. 
Sy ot20, G80! (7s 1 male. 
Munidopsis carinipes Fax. 
Plate X20V., Fig: Lt: 
Munidopsis carinipes Fax., Bull. Mus. Comp. Zodl., XXIV. 189, 1893. 
Elasmonotus carinipes Aucock, Ann. Mag. Nat. Hist., 6th Ser., XTIT. 333, April, 1894. 
sf fs A. M. Epw. et Bouv., Ann. Sci. Nat., Zool., 7¢me Sér., XVI. 281, 282, May, 1894. 
Carapace quadrangular, flat, marked by a median tuberculated ridge on 
the gastric and cardiac regions; sides converging a little from front back- 
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