188 A. Alcock — Car einological Fauna of India. [No. 1, 



109. Ozius (Euruppellia) annulipes, Edw. 



Ruppellia annulipes, Milne Edwards, Hist. Nat. Crnst. I. 422 : Dana, U. S. Expl. 

 Exp. Crust, pt. I. p. 246, pi. xiv. figs. 4a-c: Stimpson, Proc. Acad. Nat. Sci. Philn. 

 1858, p. 37 : A. Milne Edwards, Nouv. Archiv. du Mus. IV. 1868, p. 71 : Haswell, 

 Cat. Austral. Crust, p. 73: OrtmaTin, Zool. Jahrb., Syst., VII. 1893-94, p. 479: 

 Whitelegge, Mem. Austral. Mus. III. 1897, p. 137. 



Euruppellia annulipes, Miers, Zool. H. M. S. Alert, pp. 517, 523 : de Man, Archiv. 

 fur Naturges. LIII. 1887, i. p. 293, pi. xi. fig. 4 (hand only). 



Closely resembles Ozius ( Euruppellia) tenax, but differs as fol- 

 lows:— (I) the front is cut into four broader, shallower and much less 

 prominent teeth : (2) the five teeth of the antero-lateral border are 

 much sharper, and the margin of the first three is sharp and crest-like : 

 (3) the supra-orbital margin is, practically, entire, the grooves near tho 

 outer angle being hardly visible even with a lens: (4) the infra-orbital 

 margin is separated from the supra-orbital only by a shallow groove, is 

 not concave, and has its outer angle hardly prominent. 



In the Indian Museum is a specimen from Muscat (besides one 

 from Samoa). 



Baptozius, n. gen. 

 Ruppellia (part) Milne Edwards, Hist. Nat. Crust. I. 420. 



Type Ruppellia vinosa, Edw. (Op. cit. I. 422). 



Carapace broad, transversely oval, moderately convex fore and aft, 

 slightly so from side to side, with no indication of regions. 



Front very broad, about two-fifths the greatest breadth of the 

 carapace, obliquely deflexed, with a thin almost straight edge. 



Antero-lateral border short, not two-thirds the length of the 

 postero-lateral, thin, cut into four sharp-edged teeth. 



Orbits large, with a sharp, prominent, entire edge : the upper and 

 lower inner angles are in contact, so as to completely exclude the anten- 

 nary flagellum. 



Antennules folding nearly transversely, the inter-antennulary 

 septum very broad. 



Basal antennal joint massive ; the flagellum of good length (about 

 three-quarters the major diameter of the large orbit), lodged beneath 

 the front and quite outside the orbital wall. 



The crests of the endostome that define the expiratory canals are 

 very strong, and a permanent orifice is formed not, as in Ozius, by a 

 notch in the anterior border of the merus of the external maxillipeds — 

 for the anterior border of the merus of the external maxillipeds is 



