OSTRACODA. 367 



March 13th, 1902. On the latter date there was much phosphorescence in the water. 

 Stebbing describes it in Dr. Arthur Willey's " Results," Crustacea, Part v. 



Cyclasterope similis, Brady. 

 Two females in general washings from dredged invertebrates from Gulf of Mauaar. 

 Java Sound is the only previous locality given for the species. 



Family: CYPRIDINID.E. 



Cypridina faveolata, Brady. 



One specimen, from the pearl banks in the Gulf of Manaar. It has hitherto been 

 recorded only from the China Sea, where a single example was found. 



Pyrocypris chierchiae, Muller. 



This species appeared to be generally distributed throughout the area investigated 

 and has been found in the following places : Muttuvaratu, West Cheval, South- 

 south-west of Silavaturi, off Kalpentyn Island, at Galle, in washings from young pearl 

 oysters, and from the general washings from dredged invertebrates from the Gulf of 

 Manaar. 



According to Professor Brady, this and other species of Pyrocypris occur in 

 immense numbers in tropical seas, and seem to contribute a very large share to the 

 phosphorescence of these regions. Muller states that as many as twenty thousand 

 of the above species have been taken in a single haul, and attributes their light- 

 producing power to the labial papillae which so far appear to be peculiar to the genus. 



Codonocera cruenta, Brady. Plate II., figs. 43 to 45. 



A single specimen of this peculiar ostracod was taken in the collection made by 

 Professor Herdman on the homeward journey when west of Minikoi, in the Indian 

 Ocean. In Professor Brady's description of the animal it is stated that the post- 

 abdominal lamina? have only three ungues. In the present specimen there are 

 distinctly four, the fourth, however, being very small (Plate II., fig. 43). The 

 specimen was a male. The peculiar filaments on the antennules ending in bell-shaped 

 disks (fig. 44) and the muscular hand of the antenna (fig. 45) are noteworthy 

 characters; size, 173 millims. 



Professor Brady's single specimen was taken at Pulo Penang. 



Family: SARSIELLIDyE. 



Sarsiella ornithoides, Brady. 

 One specimen of this distinct form was found in the collection made at Karativo 

 Paar on March 10th, 1902. 



The only other locality for the species is Trincomalee. 



