180 A. Alcock — Carcinological Fauna of India. [No. 1, 



The front, which is nearly a fourth the greatest breadth of the 

 carapace, is prominent, is separated from the orbit by a deep notch, 

 and is bilobed, each lobe being cut into three teeth. The inner lower 

 angle of the orbit is of the same size and form and as prominent as 

 the innermost (largest) lobule of the frontal lobes. 



Chelipeds massive, a little unequal ; upper and outer surfaces of 

 wrist and upper (and sometimes in the case of the smaller cheliped the 

 greater part of the outer) surface of hand granular ; fingers stout and 

 rather short : inner angle of wrist sharply prominent, somewhat upcurved, 

 a finely beaded line passing from its summit, backwards, along the whole 

 length of the wrist. 



Legs stout, with a rough and furred or scurfy surface, the upper 

 border of the last four joints and the lower border of the last two 

 rather abundantly fringed with fine stiff hairs. 



Colours in spirit light brown, or greenish brownish yellow ; fingers 

 black. 



In the Indian Museum are 6 specimens, from Mergui, Arakan, 

 Diamond I., Singapore, 



Alliance II. Pseudozioida. 



Pseudozius, Dana. 



Pseudozius, Dana, Silliman's Journal (2) XII. 1851, p. 127 ; Proc. Ac. Nat. Sci. 

 Philad. 1852, p. 81 ; and U. S. Expl. Exp. Crust, pt. I. p. 232. 

 Pseudozius, Miers, Challenger Brachyura, p. 141. 



Carapace broad, transversely oval, little convex or quite flat, the 

 regions not demarcated. 



Antero-lateral border arched, shorter than postero-lateral border, 

 obscurely divided into four very shallow lobes. 



Front rather broad, much more than a fourth the greatest breadth 

 of the carapace, separated from the orbit by a notch, excised in the 

 middle line and having the outer angles pronounced, — and so, obscurely 

 four-partite. 



Orbital margin entire, the upper and lower inner angles almost in 

 contact. The antennules fold nearly transversely. 



Basal antennal joint very short, the next joint reaches the front ; 

 the flagellum, which is hardly as long as the major diameter of the 

 orbit, lodged in a notch between the front and the orbital wall, but 

 quite outside the latter. 



The crests of the endostome, defining the expiratory channels, are 

 strong, and the anterior border of the merus of the external maxillipeds 

 is notched to assist in forming a permanent expiratory orifice. 



