294 U.S. NATIONAL MUSEUM BULLETIN 202 Vol. 2 



corallicola hns 13 or 14, and macleayanum has 12, whereas brachylepis 

 has 9. 



Named brachylepis m reference to the scales on pectoral fin base. 



Genus HELCOGRAMMA McCiilloch and Waite 



Helcogramma McCulloch and Waite, Rec. South Australian Mus., vol, 1, p. 

 51, 1918 (type species, Helcogramma decurrens McCulloch and Waite). 



Axoclinus Fowler, Acad. Nat. Sci. Philadelphia, Monogr. 6, p. 288, 1941 (type 

 species, Axoclinus lucillae Fowler •=storeyae BTock'= Enneanecies carminale 

 Jordan and Gilbert, of which the holotype, USNM 120946, was found by 

 Schultz with the types of Gohiesox zebra and not lost as stated by Fowler 

 (1941) and by Brock (Stanford Ichthy. Bull., vol. 2, No. 1, 1940); genus 

 misspelled as typographical error by Fowler on p. 388, fig. 242, Axochnus). 



The genus Helcogramma has been revised by Richard H. Rosen- 

 blatt" as part of his study of the family Tripterygiidae. Two species 

 of this family occur in the Marshall Islands, and inasmxuch as he does 

 not contemplate publication of the full generic revision for some time, 

 he has very kindly contributed for publication here his descriptions, 

 with key, of these forms, which are new. 



Helcogramma, in the sense used here, is restricted to those triptery- 

 giid species possessing an axial lateral line composed of pored and 

 unpored scales, one anal spine, palatine teeth, and two pelvic rays 

 connected by a membrane for a part of their length. 



KEY TO THE SPECIES OF HELCOGRAMMA OF THE NORTHERN MARSHALL ISLANDS 



la. Scalation much reduced, (rarely 1) scales between lateral line and third 

 spine of second dorsal, and 1 (rarely or 2) scale between lateral line 

 and fifth anal soft ray; maxillary short, ending at or before midpoint 

 of eye (.098-.122 of standard length); eye small, .070-.092 of standard 

 length; head short, .252-. .301 of standard length; dark area on head of 

 mature males restricted to lower parts, not extending above lower 

 margin of eye Helcogramina chica, new species 



1&. Scalation less reduced, 3 (occasionally 2 or 4) scales between lateral line and 

 third ra}' of second dorsal, and 2 or 3 scales between lateral line and fifth 

 anal soft ray; maxillary longer, ending behind midpoint of eye (.145- 

 .181 of standard length); eye larger, .090-.106 of standard length; 

 head longer, .308-.340 of standard length; dark pigment on head of 

 mature males not restricted to lower parts. 



Helcogramma capidata, new species 



HELCOGRAMMA CHICA Rosenblatt, new species 



Figure 114 



Enneapterygius hudsoni (not of Jordan and Seale), Schultz, U. S. Nat. Mus. 

 Bull. 180, 1943, p. 286 (in part). 



Holotype.— USNM 115516, Phoenix Islands, Hull Island, Ocean 

 Reef, July 12-15, 1939, L. P. Schultz, male, 20.9 mm. standard 

 length. 



"' University of California at Los Angeles. 



