-Engyprosopon maid, 



Type. — British Museum (Nat. Hist.). 

 Distribution. — Maldive Islands. 

 Specimens Examined : 



8 (5$. 35-60; 3cJ, 38-63 I 



Types. ^ 



B.M. (N.H.) 1901. 1^.31. 

 Reg. No. 1901 . 12.31 .94. 



Maldives. 



Genus 26. CROSSORHOMBUS. 



Crossorhombus, Regan, 1920, Ann. Durban Mus., li, p. 211 [Platophrys dimorphxts, Gilchrist]. 



Close to Eyigyprosopov , but mouth smaller, the length of the maxillary 3f to 

 nearly 4 in that of head ; teeth uniserial in both jaws. Upper angle of gill-opening 

 a short distance above pectoral fin ; scaling of head and body continuous below 

 lateral line ; gill-rakers short, few in number. Scales of moderate size, strongly 

 ctenoid^ on ocular side, feebly ctenoid or cycloid on blind side. 



Two species from the Indo-Pacific. 



Synopsis of the Species. 

 I . Interorbital width i ^ to if times (^J) or ? to i ^ times {$) eye ; upper pectoral 



ray prolonged in male . . . . . . .1. valde-rostratus. 



II. Interorbital width f to i^ times d^) or ^ to f ($) eye ; upper pectoral ray 



not prolonged in male . . . . . . .2. azuretis. 



I. CROSSORHOMBUS VALDE-ROSTRATUS (Alcock). 



Rhomboidichthys valde-rostratus, Alcock, 1890, Ann. Mag. Nat. Hist., (6) vi, p. 435 ; Alcock, 1S98, 



Illust. Zoo!. " Investigator ", Fishes, pi. xxiv, fig. 2. 

 Platophrys dintorphus, Gilchrist, 1905, Mar. Invest. S. Afr., iii, p. 10, pi. xxvii ; Gilchrist and 



Thompson, 1917, Ann. Durban Mus., i, p. 400. 

 SciEops kobensis, Jordan and Starks, 1906, Proc. U.S. Nat. Mus., xxxi, p. 170, fig. 2 ; Franz, 1910, 



Abh. Bayer. Akad. Wiss., Suppl. iv, Abb. i, p. 61, pi. vii, fig. 55, pi. viii, fig. 6r ; Jordan and 



Thompson, 1914, Mem. Carnegie Mus., vi, p. 308, fig. 80. 



* A male of 63 mm. is selected as the holotype. 



2 The long and delicate spinules of the scales tend to wear off with repeated handling of specimens, 

 so that in fish which have been preserved for some time the scales may appear to be feebly ctenoid 

 or even cycloid. Closer examination, however, generally reveals the presence of a few scales with 

 the spinules still intact. Scales of this nature also occur in the genus Pscttina. 



