50 



U.S. NATIONAL MUSEUM BULLETIN 202 



Vol. 3 



WAKIYUS WELANDERI, new species 



Figure 144 



Holoty pe.—USNM 141008, Rongelap Atoll, Rongelap Island, 

 lagoon coral head near north end, depth 18 feet, July 25, S-46-286, 

 Brock, Herald, and Kohler, standard length 84 mm. 



Description.— For the only known specimen, the following counts 

 are recorded: Dorsal I,VIII-i,10; anal 11; pectoral ii,12,viii-ii,12,viii; 

 pelvics 1,5; oblique rows of scales above lateral line corresponding to 

 number of pores in lateral line 54; vertical scale rows below lateral 

 line 75; number of scales between lateral line and first dorsal origin 50, 

 between lateral line and soft dorsal origin 6, between lateral line and 

 anal origin 14; gill rakers developed as distinct elongate points 

 1 + 1+5. 



The following measurements are recorded in thousandths of the 

 standard length, which is 84 mm. Length of head to rear of fleshy 

 operculum 387; snout 119; lengthwise axis of bony orbit 119; great- 

 est depth of body 131; width across body at pelvic insertion 191; 





Figure 144. — Wakiyus welanderi, new species, holotype, USNM 141008, from Rongelap 

 Atoll. Drawn by Dorothea B. Schultz. 



snout tip to rear of maxillary 152; least bony width of interorbital 

 13; postorbital length of head 149; least depth of caudal peduncle 

 52; length of first dorsal spine 36, and longest or fourth dorsal spine 

 139; longest soft ray of dorsal 165; pectoral 197, pelvic 274, caudal 

 220, and anal 119; snout to dorsal origin 375; snout to pelvic insertion 

 446. 



Greatest depth 7; width of body across insertion of pelvics 5; 

 length of head 2.5; all in standard length. Snout 3.2; eye 3.2; least 

 bony interorbital 2.9; postorbital length of head 2.4; longest ray of 

 pectoral 2.0 to 2.1; of pelvic 1.4; and of spiny dorsal 2.8; all in length 

 of head. Least bony width of interorbital in lengthwise axis of eye 



