280 U.S. NATIONAL MUSEUM BULLETIN 2 02 Vol. 2 



Color in alcohol. — Whitish with about 9 narrow dark saddles on 

 back, or they may be lacking, four of these occur in front of dorsal 

 fin, and the first one near occiput is triangular in shape; head some- 

 what silvery. Eyes black, perhaps from formalin preservation. 



Color when alive. — Translucent. 



Ecology. — L. donaldsoni is a sand burrowing species. 



Remarks. — This new species differs from the only other species 

 of the genus, L. fasciatus, by having fewer dorsal and anal rays, 19 

 to 21 dorsal and 23 to 26 anal instead of 25 or 26 dorsal and 27 to 29 

 anal rays. The occurrence of this species at Oahu indicates a wide 

 range in the central Pacific. 



Named m honor of Dr. Lauren R. Donaldson, School of Fisheries, 

 University of Washington, who was at Bikini. 



Genus CHALIXODYTES Schultz 



Chalixodytes Schultz, U. S. Nat. Mus. Bull. 180, p. 262, fig. 24, 1943 (type species, 

 Chalixodyies tauensis Schultz). 



Figure 108. — Chalixodytes tauensis Schultz, holotype, USNM 116083. Drawn by A. M. 



Awl. 



CHALIXODYTES TAUENSIS Schultz 



Figure 108 



Chalixodytes tmiensis Schultz, U. S. Nat. Mus. Bull. 180, p. 263, fig. 24, 1943 

 (type locality, Tau and Tutuila Islands, Samoan group). 



SPECIMENS STUDIED 



Bikini Atoll: 5 stations, 9 specimens, 25 to 40 mm. in standard length. 

 Rongerik Atoll: 126 specimens, 16 to 39 mm. 

 Rongelap Atoll' 25 specimens, 13 to 35 mm. 

 Eniwetok Atoll. 1 specimen, 30 mm. 



Description. -Dorsal rays 35 to 37; anal rays 35 to 37; pectoral with 

 a tiny nonstriated ray and 11 or 12 cross-striated rays; pelvics alwaj^^s 

 1,4 ; pores from upper edge of gill opening to base of caudal fin 55 or 

 56; predorsal median scales about 18; branched caudal fin rays about 

 7 or 8. 



Head 4.2, greatest depth about 10, tip of snout to dorsal origin about 

 2.3; all in standard length. Snout 3.8, eyes 7, length of pectoral fin 

 2.2, all in length of head. 



Body long, slender, the depressed head tapering to a point, with 

 snout projecting notably beyond lower jaw; origin of dorsal fin over 

 that of the anal; pelvics inserted in front of base of pectorals; the 



