32 Memoirs of the Indian Museum. [Vol. IV, 



The abdominal somites bear faint intermediate, lateral and marginal carinae, but 

 the submedian are entirely absent except on the last. The following carinae end in 



spines : — 



Carinae. Abdominal somites. 



Submedian . . . . . . 6. 



Intermediate 

 L,ateral . . 

 Marginal . . 



5,6. 



5,6. 



(3) (4) 5- 



The dorsal ornamentation of the telson is variable and, both in general features 

 and in its sexual differences, presents a close resemblance to that of 5. latreillei. The 

 figures on PI. I, figs. 19, 20, will convey a better idea of the characters than a long 

 description. The submedian teeth have minute movable tips and there are two 

 submedian denticles , six or seven intermediate and one lateral. The under surface of 

 the telson is smooth except for an obsolete post-anal carina. 



The process from the base of the uropod bears a series of six or seven sharp spines 

 on its inner margin. Of the two primary spines the inner is nearly twice the length of 

 the outer and bears a rounded external lobe near its middle point. 



The smallest specimen in the Indian Museum, a female 33 mm. in length, differs 

 from the foregoing description in having the rostrum distinctly broader than long, in 

 having three submedian and five intermediate denticles on the telson, in having the 

 outer margins of the intermediate teeth serrate, and in having the oblique rows of 

 tubercles on either side of the telson more conspicuous. In other characters, however, 

 it agrees so well with typical examples that there can be little doubt that it belongs 

 to the same species. 



The specimen from Australia which Miers doubtfully referred to 5. microphthalma 

 in some respects resembles this small individual ; but the rostrum, according to Miers' 

 figure, is still broader and the inner margin of the ventral process of the uropods is 

 stated to be armed only with a series of small spinules, as in C. decor ata. On the 

 acquisition of further specimens from the Australian coast it will perhaps appear that 

 this form is distinct, and in this case the name depressa, suggested by Miers, is to be 

 employed. 



The colour of spirit specimens is not very striking. The lateral and posterior 

 margins of the carapace and the posterior margins of the last three thoracic and five 

 abdominal somites are rather broadly defined by black pigment. 



There are four specimens of S quitta microphthalma in the Indian Museum : — 

 — Karachi. Karachi Museum. 1 tf , 52 mm. 



Karachi. 



1 <$ , 41 mm. 



'-^ Bombay. Bombay Nat. Hist. Soc. r ? , 50 mm. 



7 -ff? Madras Coast. (no history). 1 9 , 33 mm. 



In addition to the above records 5. microphthalma is known from ' les côtes 

 de l'Inde ' (Milne-Edwards) and from Zanzibar, 33 fathoms (Jurich). The sped- 



