294 CEYLON PEARL OYSTER REPORT. 



Caligus benedeni, Bassett- Smith. 



Found attached to the inner surface of operculum of Scicena diacanthus from Palk 

 Strait, Ceylon. 



Lepeophtheirus thompsoni, Baird. 



Found associated with Ccdigns dakari in the mouth of Arius venoms 

 from Palk Bay. Ceylon. 



Family : ( !HONDRA< 'AXTHI I ).E. 



Chondracanthus cornutus, Muller. 



One only was taken from the gills of Cynoglossus oligolepis, from 

 Ceylon. 



Chondracanthus cynoglottidis, n. sp. Text, fig. 1. 



Length, female 4 '65 millims. (excluding ovisacs); male unknown. 

 Head rounded, 2-lobed, as wide as the widest part of the body. 

 Body constricted for about -^ of its length, when it expands in width, 

 again narrowing towards the posterior end, and terminating in short 

 strong spines. Anterior antenna? unjointed, about 3 times as long as 

 broad. Posterior antennas consist of 2 gracefully curved spines. Two 

 pairs of lateral prolongations (rudimentary appendages), having on 

 under side of each a small rounded tubercle, spring from the constricted 

 part of the body. A pair of long wide ovisacs, equalling in length the 

 Fig. 1. entire animal, are attached to the posterior end. 



cimoqlottidis Specimens were found attached to the nasal ccecum in Cynoglossus 



brachyrhyncKus and C. brevirostris by Mr. J. Johnstone, who obtained 

 for us this series of 1 1 fish-parasites while examining the collection of Ceylon fishes in 

 the Zoological Department of Liverpool University. 



Family: LERlOEOPODIDiE. 

 Brachiella thynni, Cuv. 

 Attached to gills of Chirocentrus <l<>ral>, from Palk Strait. 



Brachiella merluccii, Bassett-Smith. 

 From grooves underneath the head of Scicena diacanthus from Palk Strait. 



Anchorella uncinata, Muller. 

 Found under head in the folds of operculum of Gazza aquulcefoi-mis from Palk Bay. 



