MARINE FISHES. 209 



Cyuoglossus arel (lb.. Schn.). 



Two specimens of this fish wrrr obtained, the longest of which is about 15 inches in 

 extreme length. Day's figure of this species is very unsatisi'artorv and shows too 

 many scales in the longitudinal diameter. Palk Bay, Station XVIII., soft mud, 

 7 to 8 fathoms. 



Cyuoglossus brachyrhyuchus (Bleeker). 

 Pearl banks off Aripu. 



Cyuoglossus hamiltoui (Guntheb). 

 Pearl banks off Aripu. 



Cyuoglossus brevirostris, Day. 

 Pearl banks off Aripu. 



Cyuoglossus oligolepis (Bleeker). 

 Cynoglossus bengalensis (Bleeker). 

 One specimen from Palk Bay, Station XVIII. Also from Station IV., off Uhilaw, 

 about 4 inches in extreme length. 



Cynoglossus, sp. 



A single specimen was obtained which is unfortunately in a bad state of 

 preservation, most of the scales on both sides being rubbed off. The extreme length 

 is 1 1- inches, but the specimen is a mature female, the ovaries being largely distended 

 on both sides. The colour is reddish-violet towards the margins of the body. The 

 scales on both sides are coarsely ctenoid. The small size at sexual maturity is 

 extraordinary, but we know little of the rate of growth of tropical Pleuronectids. 

 Station XXV, off Foul Point, Trincomalee, 8 fathoms. 



Note on "Naso-pharyngeal" Communications in Cynoglossus. 



Kyle, in 1900 (9), gave a description of a communication between the nose and 

 mouth in a species of Cynoglossus -C. semilcevis, Gunther. This was found in one 

 specimen out of five examined and is considered by the author to be a structural 

 detail of considerable morphological importance. A number of specimens of 

 Cynoglossus were found in working over the present collection, and another from the 

 Patani coast, several were dissected and serial sections were made of others. The 

 following species were examined iu this way : C. arel, C bengalensis, C. macrolepi- 

 dolus, < '. brachyrhynchus, and C. brevirostris. In none of these specimens were any 

 traces of a naso-pharyngeal communication to be found. 



A nasal ccecum was found in every fish examined. This structure answers to the 



1 i; 



