26 



The andricnm, which is longitudinally chanelled both anteriorly and poste- 

 riorly, is a little asymmetrical, one lobe — usually the left — being a Httle longer 

 and larger than the other. It consists of a pair of intimately connected lobes, 

 each of which splits up into two convoluted petaloid lobules. On unravelling, 

 the inner lobule of the smaller (usually the right) lobe is spirally convoluted 

 and shows a smaller petaloid process on its outer side : it is enfolded in the 

 inner lobule of the larger (usually the left) lobe. Finally the outer lobules of 

 each lobe are folded round the inner lobules, so that the whole organ has some- 

 what the appearance of an opening flower-bud. 



The thelycum is shaped somewhat hke a reversed W. It consists of a 

 T-shaped plate lying between the penultimate pair of legs, the horizontal limb 

 of the T being thick and prominent, the vertical limb short : from each end of 

 the horizontal limb a salient lamina runs obliquely backwards abutting on the 

 coxa3 of the 5th pair of legs. 



This species rarely reaches a length of 3| inches. It is one of the common 

 forms of the 100-fathom line in the muddy parts of the seas that wash the 

 peninsula. It is extremely closely related to M. pliilvppinensis Spence Bate, 

 from which it is distinguished, as regards the male by the form of the inner 

 antennular flagellum, and as regards the female by the form of the thelycum. 



The collection contains 256 specimens, registered as follows : 



4174 

 9 



4206 



Type of 3. 



Type of 2 . 



~1 



4175-4205 4207-30 



9 '' 9 

 7064-78 



9 

 7368-80 



9 

 9120-30 



9 

 9184-9200 



■9 

 1847-49 



id~ 



3398 



10 

 3401 



10 

 3432 



10 

 4940 



10 



> Oi'issa coast, 68 fathoms. 



Off Masulipatam, 95 fathoms. 



Off Kalingapatam, 80 — 100 fathoms. 



Off Nellore coast, 133—250 fathoms. 



Off Madras, 107 fathoms. 



Off Audamans, 79 fathoms. 



Off Malabar coast, 68—148 fathoms. 



Off Canara coast, 12i — 119 fathoms. 



Off Concan coast, 56 — 58 fathoms. 



G. of Oman, 230 fathoms. 



- " Investigator.' 



