222 "ENDEAVOUR" SCIENTIFIC RESULTS. 



Family II. BOTHID^E. 



Synopsis of Australian Genera. 



I. Pelvic fins equal, short-based. (Paralichthinw). Pelvic fins 

 subsymmetrical; mouth moderate or large; teeth uniserial; 

 eyes separated by a ridge 1. PSEUDORHOMBUS 



II. Left pelvic fin median, with base much longer than that of 

 right. (Bothince.) 



A. Lateral line not developed on blind side of body. 



1. Eyes separated by a bony ridge or a concave space of 



moderate width; interorbital region similar in both 

 sexes; gill-opening extending upwards to or nearly to 

 commencement of lateral line; rostral spines generally 

 absent, but if developed they are present in both sexes. 



a. Rostral spines absent; anterior rays of dorsal fin 



sometimes moderately prolonged in the males .... 

 2. ARXOGLOSSUS 



b. Rostral spines present; anterior rays of dorsal fin 



prolonged in both sexes, filamentous in the males 



3. LOPHONECTES 



2. Interorbital region concave, generally very broad in the 



males; gill-opening extending upwards to commence- 

 ment of lateral line; rostral and ocular spines 



developed only in the males; scales large 



4. ENGYPROSOPON 



3. Interorbital region concave, generally very broad in the 



males; gill-opening ending a short distance above 

 pectoral fin; membrane connecting operculum with 

 shoulder scaleless; rostral and ocular spines developed 

 only in the males ; scales small 5. BOTHUS 



B. Lateral line developed on both sides of body; interorbital 



region rather narrow, concave, similar in both sexes; 

 gill-opening ending midway between pectoral fin and 

 lateral line; scales small 6. GRAMMATOBOTHUS 



I have been unable to identify Neorhombus unicolor, 

 Castelnau [Kesearches Fish. Austral., p. 45 (1875)] from 

 Fremantle, a genus and species which has not been recog- 

 nised since first described. This may be a species of 

 Pseudorhombus. 



Kevision of the Australian Species of Pseudorhombu*. 



1. PSEUDORHOMBUS. 



Pseudorhombus, Bleeker, C. E. Akad. Sci. Amsterdam, 

 XIII, 1862, p. 5; Gtinther, Cat. Fish., IV, p. 423 



(1862). 



Eyes on the left side, separated by a ridge. Mouth 

 moderate or rather large; teeth in jaws conical, pointed, 

 uniserial; palate toothless. Dorsal fin originating in 

 front of or above anterior part of upper eye, the rays 

 nearly all simple and more or less scaly on both sides. 



