2l8 



e^_ The anterior half of the 3''<' or dorso-lateral crest is present 

 and ends in a small spine behind and distinct from the 



orbital spine Gilesii W.-Mas. 



(J. Wood-Mason, I.e. Febr. 1891, p. 193). 

 b^ Anterior moiety of the fourth or lateral crest of the carapace 

 divided into two parts, the anterior of which never approaches 

 the level of the orbital margin, 

 fj Posterior pair of peraeopoda terminating in a thick cylindrical 

 dactylus that abruptly ends in two small points. 

 For the rest much like Glyph, gratuilosis Bate, but less tuber- 



culated podagcr Bate 



(C. Spenxe Bate, I.e., p. 516, PI. XCIII, fig. 2.) 



c^ Posterior pair of peraeopoda terminating in a bifid or cleft 

 extremity. 

 F"or the rest much like Glyph, granidosis Bate, but with three 



teeth on each side of the rostrum rimapcs Bate 



(C. Spence Bate, I. e., p. 523, PI. XCIV, fig. 4.) 



Tj Posterior pair of peraeopoda terminating in a dactylus which is 

 vertically compressed, dorsally grooved and lanceolate. 

 d^ Margins of the rostrum armed with several (6 or 7) vertically 

 flattened spinous teeth. 

 Orbital spine armed with a variable number of spinules. Cara- 

 pace densely strewn with spinules spimilosa Faxon 



(W. Faxon, i.e., 1895, p. 138, PI. XXXVIII.) 



d.. Margins of the rostrum armed with two pairs of spines. 

 e^ The two parts into which the anterior moiety of the 4"' or 

 lateral crest is divided, are either both produced into moderate 

 spines or this is at least the case in the anterior part. 

 f■^ Anterior tooth of the anterior moiety of the subdorsal cara- 

 pacial crest very large, much larger than the posterior 

 rostral spines, vertically compressed and acute, 

 ^j Pleuron of 5'*^ abdominal somite ending in two spines. 

 //( Tubercles of carapace very numerous. 



Posterior moietv of V'' or dorso-lateral crest terminating 



anteriorly in a strong blunt or subacute cusp. . . . gramilosis Bate 

 //,, Tubercles between the crests of the carapace less numerous, 



being little more than scattered granules priononota W.-Mas. 



(A. Alcock, I.e., 1901, p. 129.) 



g, Pleuron of 5"' abdominal somite ending in three spines. 

 Posterior moiety of 3"^'^ or dorso-lateral crest armed in front 



with a small bidentate tooth, directed laterally. . . . sculpta (S. I. Smith) 

 (S. I. Smith, I.e., 1882, p. 49, PI. V, fig. 3, PI. VI, figs. 3—3^/). 



