204 CEYLON PEARL OYSTER REPORT. 



Balistes stellatus, Lace>ede. 

 Skin of specimen about 17 inches long. Galle. 



GYMNODONTES. 

 Tetrodon margaritatus, Ruppell. 

 One specimen, about 2 J inches long, from Aripu. 



Tetrodon lunaris, Bl. Schn. 



Numerous immature specimens from Ai'ipu, also one specimen. G inches long, which 

 was taken on a line in the Gulf of Manaar. 



SYNGNATHID^. 



Syngnathus longirostris (Kaup). 

 Two specimens about 7\ inches long. 



Ichthyocampus carce, Ham. Buch. 

 One immature specimen from south of Galle. 



Gastrotokeus biaculeatus (Bloch). 

 One specimen, 6 inches long, from Gult of Manaar. 



Hippocampus villosus, Gunther. 



Two specimens were obtained which I refer to this species. They differ slightly 

 from Gunther's description : the groups of filaments on the tubercles are more 

 dendritic than is represented in his figure. There are about 45 body rings present ; 

 the dorsal fin has 16 rays ; the length of the snout, which was equal to the distance 

 between the lens of the eye and the gill opening in Gunther's specimen, is less in 

 the Ceylon ones, so that the snout appears somewhat shorter. The species, however, 

 are most probably the same. 



Two specimens, 1*9 inches long, at Station LIV. (south of Adam's Bridge). 



Hippocampus guttulatus, Covier. 

 Two specimens from Station LIV. (south of Adam's Bridge). 



SOLENOSTOMID2E. 



Solenostoma paradoxum, Pall. 

 One specimen, about 3| inches in extreme length, from the Gulf of Manaar. The 

 colours, in alcohol, are light orange on the body and crimson on the tips of the fins 

 and on the eyes. The specimen is a female, and has a brood pouch containing both 

 eggs and newly hatched larvae. Mr. Hornell has since found a specimen covered with 

 arborescent filaments (and with radial formula: D. 5, 19 ; A. 21 ; P. 25 ; V. 7 ; C. 16 ; 

 and two elongated black marks on front dorsal fin) which may be a distinct species. 



