MUNIDOPSIS CARINIPES. 



97 



Munidopsis quadrata Fax, 



r 



Plate XXIIL, Fig. 1, T, 1\ T. 



Munidopsis qmdrata Pax., Bull. Mus. Comp. ZooL, XXIV. 188, 1893- 



FJasmonoius quadratus A. M. Edw. et Bouv., Ann. Sci. Nat., ZooL, 7^""" S^r., XYI. 2S1, 282, 1894. 



Carapace quadrangular, tlic anterior and lateral margins forming a right 

 angle ; upper surface fiat, spineless, but furnished with low squamous tuber- 

 cles. Rostrum curved upward, broad at base, narrowing anteriorly to form 

 a long 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 j pleura of 

 second segment faintly tuberculatc, the others narrow, with the external 

 angles rounded but not truncate. Eye spineless, almost concealed by the 

 base of the rostrum. Antenna? about as long as the carapace ; a conspicu- 

 ous spine on the upper side of the third segment. Cheliped long, tubercu- 

 latc, with the exception of the fr.-'crs ; chela slender, fingers not gaping. 

 Ambulatory legs tuberculatc, with the exception of the dactyli, which are 

 furnished with small teeth on their posterior margins. 



Length of body, 29 mm. 5 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 

 XXIII,, 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 fern. ovig. 



u 



3425. 680 



ic 



1 male. 



Munidopsis carinipes Fax. 

 Plate XXIV., Fig, 1, 1% IK 



Munidopsis carinipes Fax., Bull. Mus. Comp. ZooL, XXIV. 189, 1893. 



Elasmonoius carinipes Alcock, Ann. Mag. Nat. Hist., GUi,Scr., XIII. 333, April, 1894. 



'' A. M. Edw. et Bouv., Aim. Sei. Nat., ZooL, 7*^'"" Scr., XVI. 281, 282, May, 1891. 



Carapace quadrangular, flat, marked by a median tuberculated ridge on 

 the gastric and cardiac regions ; sides converging a little from front back- 



13 







