Carcinological Fauna of India. 227 



Doclea ovis (Herbst), Edvv. 



Cancer ovis, Herbst, Krabben, I. ii. 210, tab. xiii. fig. 82 ; and Fabricins, Syst. 

 Ent. II. 459. 



Inachus ovis, Fabricius, Supplement, p. 355. 



[Maia ovis, Bosc. I. 256]; and Latreille, Hist. Nat. Crust. VI. 100. 



Doclea ovis, Milne-Edwards, Hist. Nat. Crust. I. 294. 



Doclea ovis, Cuvier, Regne Animal, Crust., pi. xxxiii. fig. 2. 



Doclea ovis, Adams and White, Zool. ' Samarang,' Crust., p. 7. 



Doclea ovis, A. O. Walker, Journ. Linn. Soc, Zool., XX. 1890, p. 109. 



Body and appendages, except the bands and the tips of the dactyli, 

 covered with an extremely dense soft far. 



Beneath the fnr the carapace is almost smooth, its surface being 

 hardly broken by a median line of pimples on the gastric region ; but 

 its autero-lateral border, on each side, is armed with four sharp teeth 

 of about equal size — one at the angle of the buccal frame ; one, which 

 has sometimes a tubercle at its base, on the sab-hepatic region ; and 

 two on the front part of the branchial region. The basal antennal joint 

 has also the form of a tooth, and midway between it and the tooth at 

 the outer angle of the buccal frame is another tooth. So that, includ- 

 ing the pointed basal antennal joint, the antero-lateral margin of the 

 carapace shows six teeth : there is no spine, though occasionally a trace 

 of a tubercle, on the posterior border. 



The rostrum hardly breaks the general subcircular outline of the 

 carapace : it is cleft at the tip, and, measured at the level of the base 

 of the post-ocular tooth, is broader than long. 



The pterygostomian region is longitudinally grooved. The cheli- 

 peds in the old male are 1|- times the length of the carapace and 

 rostrum, and are enlarged, especially as to the palm, which is f as 

 broad as long, and is inflated on the inner side : the fingers also are 

 stout and meet only in (about) the distal third. In the female the 

 chelipeds are only about f the length of the carapace and rostrum, and 

 are throughout slenderer than the other legs. The 2nd pair of trunk- 

 legs (first ambulatory legs) are from twice to 2J times the length of the 

 carapace and rostrum. 



The abdomen in both sexes consists of seven distinct segments, 

 and the second segment in the female bears a large median elevation. 



A common species in muddy waters in the vicinity of the mouths 

 of the large rivers of India. 



Doclea japonica, Ortmann. 



Doclea japonica, Ortmann, Zool. Jabrb. Syst., &c., VII. 1893, p. 46, pi. iii. fig. 4. 



The only differences between this species and Doclea ovis are (1) 

 73 



