



256 Carcinological Fauna of India. 



Loc. Andaman Sea, 17-36 fms. Off Ceylon 34 fms. 



Greatest length 



,, breadth 

 Length of chelipeds 



Tiarinia, Dana. 



Tiarinia, Dana, IT. S. Expl. Exp., Crust., pt. I. p. 109. 



Tiarinia, Miers, Journ. Linn. Soc, Zool., Vol. XIV. 1879, p. 664. 



Carapace subpyriform, somewhat broadened anteriorly, tubercnlated, 

 terminating in a rostrum composed of two moderately deflexed horns 

 which are in close contact with one another, except sometimes at the 

 extreme tip. 



The eyes are enclosed in tubular orbits formed by a prominent 

 supra-ocular roof the anterior angle of which is strongly produced 

 forwards, by a cupped post-ocular tooth, and by a process of the broad 

 basal antennal joint, all three elements being in the closest contact. 

 The mobile portion of the antenna is completely exposed. 



The external maxillipeds have the merus broader than the ischium 

 owing to the expansion of its external angle, and the palp inserted in 

 a slight notch in the internal angle of the merus. 



The chelipeds are little enlarged in the male : the ambulatory 

 legs have the dactylus short and claw-like. 



The abdomen in both sexes consists of seven distinct segments. 



Tiarinia cornigera, (Latr., Edw.) 



[Pisa cornigera, Latr., Encyc, X. 141.] 



Pericera cornigera, Milne-Edwards, Hist. Nat. Crust., I. 335 ; and Adams and 

 White, ' Samarang' Crust., p. 18. 



Tiarinia cornigera, Dana, U. S. Expl. Exped., Crust., pt. I. p. 110, pi. iii. 

 figs. 5a-e ; and Stimpson, Proc. Acad. Nat. Sci, Philad., 1857, p. 217 ; and Haswell, 

 Proc. Linn. Soc, N. S. Wales, Vol. IV. 1879, p. 449, and Cat. Austral. Crust., p. 28; 

 and Miers, Ann. Mag. Nat. Hist., 1880, Vol. V. p. 228 ; and Mary J. Rathbun, Proc. 

 U. S. Nat.'Mus., Vol. XV. 1892, pp. 243 and 276. 



? Pericera tiarata and setigera, Adams and White, ' Samarang ' Crust., p. 17. 

 Tiarinia verrucosa, Heller, ' Novara ' Crust., p. 4, taf. i. fig. 3. 



Tiarinia mammillata, Haswell, Proc. Linn. Soc, N. S. Wales, Vol. IV. 1879, 

 p. 448, and Cat. Austral. Crust., p. 27. 



Body and ambulatory legs with many curly hairs. 



Carapace pyriform, the regions well-defined, the surface closely 

 and very variedly pustular nodular and granular, but with the following 

 markings fairly constant: — two parallel longitudinal lines of small 

 nodules between the orbits; a "cross " of larger nodules on the gastric 



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