160 CEYLON PEARL OYSTER REPORT. 



(1.) Eocuma sp. Taken in the tow-net in Galle Bay after dark. A young and 

 damaged specimen, apparently distinct from any of the species described 

 below. 



(2.) Bodotriidse, n. gen. and sp. Gulf of Manaar, near the shoal buoy, north of 

 Karativo Island. A very young- specimen belonging to an undescribed 

 species (representing a new genus), of which a large series of specimens 

 from the Gulf of Siam is in the collection of the Copenhagen Museum. 



(3.) Cyclaspis sp. From the Cheval Paar and Kondatchi Paar. Two young 

 specimens of a species which is also represented in the Copenhagen 

 collection from Siam. 



(4.) Cumopsis (?) spp. Several immature specimens from various localities on the 

 Cheval Paar, and off Chilavaturai, in the Gulf of Manaar. 



(5.) Cumella sp. From the Cheval Paar and near the shoal buoy north of 

 Karativo Island. 



(6.) Nannastacus sp. From the Cheval Paar, and 2f miles south-south-west of 

 Chilavaturai, in the Gulf of Manaar. 



The great majority of the species of Cumacea hitherto described are inhabitants 

 of northern seas, and only a very few (some 13 out of a total of about 170 species) 

 have been found within the tropics. It can hardly be doubted, however, that, as in 

 the case of other groups of micro- Crustacea, this preponderance of northern species is 

 more apparent than real, and is due to the fact that collectors in tropical countries 

 have their attention claimed by the more conspicuous elements of the fauna to the 

 exclusion of the more minute and less obtrusive forms. No Cumacea have hitherto 

 been recorded from any part of the Indian Ocean, although four species have been 

 described by Paulson and by Kossmann from the Red Sea, and one of these is 

 represented in the present collection. 



The types of the species described below have been presented by Professor 

 Herdman to the British Museum (Natural History). 



Family : EODOTEIID.E. 



Eocuma, Marctjsen. 



MarCUSEN, 'S.-B. Ggs. naturf. Fr.,' Berlin, 1894, p. 170; EtiLGENDORF, Tom. dt., p. 171 ; 

 ZiMMER, ' Zool. Jahrb.,' Syst. XVIII., p. GG9, 1903. 



Carapace sub-globular or more or less flattened dorso-ventrally, having a pair of 

 procurved lateral cornua, behind which the lateral margin is usually sharply keeled. 

 Four thoracic somites are free behind the carapace. First pair of legs having the 

 basis produced distally into a pointed lobe on the upper (or inner) side of the 

 articulation of the ischium. Second legs generally very short, composed of six 



