274 



along the inner border : the fingers are finely and evenly toothed, and excavated 

 ventrally. The 2nd-4th legs have the meropodite and carpopodite strongly 

 spiniferous anteriorly : in all, but especially in the fourth, the propodite is 

 enlarged at its distal end and there has its posterior border produced to form 

 a compressed spiniferous tubercle, against which the basal portion of the dactylu* 

 can be flexed to form a sub-chela : in the second pair of legs the tubercle carries 

 two or three teeth, in the third pair five or six, and in the fourth pair, which are 

 almost typical sub-chelae, six or seven : the dactyli are stout, and are minutely 

 serrated only in that part of their posterior border which is opposed to the 

 tubercle on the propodite. The fifth pair of trunk-legs is of the ordinary 

 Oalatheid form. There are no epipodites on any of the thoracic legs. 



In the female the 2nd-5th pairs of (uniramous) abdominal appendages are 

 present, increasing in size from before backwards. 



Length of fully-extended body 70 millim., of chelipeds 59 millim. 

 Andaman Sea, off Ross Island, 265 fathoms. 



The specific name spinosiis having been used by Milne Edwards, in 1880, 

 for a species of the subgenus Orophorhynchns, is not applicable to this species. 



Eegd. No. ^ (Type of the species). 



44. Munidopsis (Bathyankyristes) levis, Alcock & Anderson. 



Bathyankyristes levis, Alcock and Anderson, Journ. Asiatic Soc. Bengal, LXIII. pt. 2, 1894, p. 175. 

 ILLUSTRATIONS OF THE ZOOLOGY OF THE INVESTIGATOR, CRUSTACEA, PLATE LV. PIG. 3. 



Closely resembles the preceding species, from which it differs only in the 

 following particulars : The rostrum is broader and more depressed, and is only 

 half the length of the carapace : the eye is relatively much larger no part of 

 the eyestalk being visible from above : the chelipeds are much less spiny : the 

 2nd-4th pairs of trunk-legs have the meropodite and carpopodite quite un- 

 armed, except for a distal spine above and below : the abdominal terga are in 

 closer contact. 



In the male the 1st and 2nd pairs of abdominal appendages resemble those 

 of Munidopsis, and the 3rd-5th pairs are rudiments. 



Length 29 millim. : of chelipeds 27 millim. 



Arabian Sea, in the neighbourhood of the Laccadives, 636 fathoms. 



Regd. No. ^p (Type of the species). 



GALACANTHA, A. M. Bdw. 



Galacaiitha, A. Milne Edwards, Bull. Mus. Comp. Zool. VIII. 1880, p. 52 : Henderson, Challenger Auomura, 

 p. 166: Milne Edwards and Bouvier, Ann. Sci. Nat. Zool. (7) XVI. 1894, p. 268, and Mem. Mus. Comp. Zool., XIX. 

 No. 2, 1897, p. 55 : Faxon, Mem. Mus. Comp. Zool. XVIII. 1895, p. 78. 



Integument very strongly calcified. 



