5. LEPTOSCOPUS. 231 



the total ; the posterior margin of the oecipitals straight, without 

 notch ; operciiliim and prajojjerciilum naked, bony ; sub- and prae- 

 operculum mthout spines ; spine of the shoidder small. Cavity of 

 the gUls not opened above. Back, dorsal and pectoral fins with 

 large round or ovate white spots. 

 East Indian Seas. 



a. Adult : stuffed. Ceylon. From the Collection of the Zoological 



Society. 



b. Half-grown. Madras. Presented by T. C. Jcrdon, Esq. 



c. Adult : stuffed. 



4. KATHETOSTOMA*. 



Uranoscopus, sp., Cur. l|)- VhI. iii. p. 319. 



Habit and teeth as in Uranoscopus. Scales none. One continuous 

 dorsal ; ventrals jugular ; pectoral rays branched ; some bones of the 

 head armed. Cavity of the gUls without superior opening ; six 

 branchiostegals ; pseudobranchise. Air-bladder none. 



Australian Seas. 



1. Kathetostoma laeve. 



Uranoscopus Iffivis, Bl. Schn. p. 47. tab. 8 ; Cuv. 8,- Val. iii. p. 319. 

 D. 17. A. 17. 

 One dorsal. Scales none. The length of the head is 3| in the 

 total. Three spines on the inferior margin of the praeopercidum, 

 two below the mandibula, two on the throat. 

 Australian Seas. 



a. Adult. Port Arthur. From the Haslar Collection. 

 h. Twenty-six inches long and seven broad : stuffed. Australia. 

 Presented by Captain Stokes. 



5. LEPTOSCOPUS. 



Leptoscopus, Gill, Proc. Ac. Nut. Sc. Pliilad. 1859, p. 1.33. 

 Uranoscopus, sp., Richards. Voy. Erch. i^- Tei-r. Ichthyol. p. 55. 



Form of the head as in Uranoscopus, but entirely covered with 

 soft skin ; body elongate ; cleft of the mouth approaching the ver- 

 tical line ; eye on the upper side of the head. Scales small, cycloid. 

 One continuous dorsal ; ventrals jugular ; pectoral rays branched. 

 ViUiform teeth in both the jaws, on the vomer and the palatine 

 bones ; without canines. No interior or exterior filament ; opercles 

 without external spines. Ca\'ity of the gills very wide, partially 

 opened above. Six branchiostegals ; pseudobranchi8e. Neither an 

 air-bladder nor pyloric appendages. 



Port Jackson. 



* From Ka'^eros, vertical, and arofia, mouth. 



