BOTHIN.E 203 



moderate length, rather stout ; 6 or 7 on lower part of anterior arch. Scales ctenoid 

 on ocular side, cycloid on blind side ; 62 to 70 in lateral line. Dorsal 87-93 ; second 

 (occasionally first) to fifth, sixth or seventh rays much prolonged in the male (except 

 in very young), longest rays (in adults) i J to about twice length of head ; only the 

 third to fourth or fifth rays are prolonged in the female, length i to 1°,-, that of head. 

 Anal 71-77. Pectoral of ocular side with 11 or 12 rays, length f to J that of head. 

 Caudal pointed. Brownish or greyish, with or without darker markings, the most 

 conspicuous of which are three blotches on the lateral line ; fins with dark dots ; 

 pelvic of ocular side generally blackish posteriorly, with a pale margin. 



Type. — British Museum (Nat. Hist.). Reg. No. 79.5.14.93. 



Distribution. — South-eastern Australia ; Tasmania ; New Zealand. 



Specimens Examined : 



2 (128, 135 mm.). Types.i St. 16.: (Bass Strait), 38 fms. "Challenger." 



6 (135-180 ,, ). Port Jackson, N.S. Wales. Imp. Inst. 



I (155 mm.), skeleton. ,, ,, ,, 



1 (60 ,, ). Off ,, ,, , 30 fnis. " Challenger." 



3 (63-88 mm.). Off Twofold Bay, N.S. Wales, 



120 fms. 



3 (100-118 mm.). 8 miles east of Sandon Bluff, N.S. .Austr. iMus. (" Endeavour "). 



Wales, 35-40 fms. 



4 (75-85 mm.). T\-pes of Off C. North, N. Zealand, 14-30 fms. " Terra Nova." 

 Arnoglossiis mongonuiensis. 



Also 6 from Bass Strait and New South Wales (Austr. Mus. " Endeavour "). 

 This species attains a length of about 8 inches. 



Genus 25. ENGYPROSOPON. 



Engyprosopon, GUnther, 1862, Cat. Fish., iv, p. 431 [Rhombus mogkii, Bleeker]. 

 Scaops, Jordan and Starks, 1904, Bull. U.S. Com. Fish., xxii, (1902), p. 627 [Rhombus grandisguatna, 

 Schlegel]. 



Body ovate or rather deep, strongly compressed. Eyes on the left side, separated 

 by a flat or concave space of varying width, which is generally broader in the male ; 

 eyes sometimes separated by a bony ridge in young. Male usually with one or more 

 spines on the snout and on the orbital margins. Olfactory laminas as in Arnoglossus. 

 Mouth rather small, the length of the ma.xillary 2\ to 3J in that of head ; jaws and 

 dentition about equally developed on both sides ; teeth small, sometimes uniserial, 

 but generally with an outer series of larger teeth anteriorly in upper jaw ; no distinct 

 canines ; vomer toothless. Gill-opening extending upwards to lateral line, or ending 

 a short distance above pectoral fin, in which case the scaling of the head and body is 

 continuous below lateral line ; gill-rakers comparatively few in number, short or of 

 moderate length. Dorsal fin commencing above or a little in advance of nostrils of 

 blind side, and well in front of eye ; all the rays simple, scaled (at least on ocular 

 side). Tip of first interhaemal spine not projecting in front of anal fin. Pectoral fins 

 unequal, that of ocular side larger ; all the rays .simple ; upper ray sometimes prolonged 

 in the mature male. Tip of pelvic bone projecting downwards and backwards between 

 the pelvic fins. Scales of moderate size or rather large, somewhat feebly ctenoid on 

 ocular side, cycloid on blind side ; no supplementary scales. Lateral line developed 

 only on ocular side of body, with a distinct curve above the pectoral fin ; no supra- 

 temporal branch. \'ent on blind side, above first ray of anal fin. 



About fifteen species from the Indo-Pacific. 



' The larger specimen is selected as the holotype. 



