386 



"U.S. NATIONAL MUSEUM BULLETIN 2 02 



Vol. 2 



36. Scales imbricate on body. 



4a. At least two-thirds of posterior part of maxillary exposed, not covered 

 by dermal fold of cheek when mouth is closed. 

 5a.. One short, blunt pyloric caecum on each side of pylorus; head 



finely ciliate, without scales Brosmophycis ^^ Gill 



56. No pyloric caecum developed (only a thiclcening in the wall where 

 it might be expected) ; head not ciliate, scales present or absent 



on gill cover Dinematichthys Bleeker 



4o. Maxillary wholly concealed by dermal fold of cheek when mouth is 

 closed; scales imbricate; one short, blunt pyloric caecum on each 

 side of pylorus Brosmophyciops, new genus 



Figure 128. — Brosmophyciops pautzkei, new species, holotype, USNM 142023, from Bikini 

 Atoll. Drawn by A. M. Awl. 



BROSMOPHYCIOPS PAUTZKEI, new species 



Figure 128 



Holotyjpe.—V^'NM 142023, Bikini Atoll, Arji Island, lagoon, depth 

 20 to 40 feet, August 7, S-46-308, Herald and Brock, standard length 

 53.8 mm. 



Paratypes. — USNM 142024, A specimen taken with holotype and 

 bearing samxC data, standard length 54 mm.; USNM 14202G, 

 Rongelap Atoll, Rongelap Island, lagoon, depth 18 feet, July 25, 

 S-46-286, Brock, Herald and Kohler, 1 specimen, 55 mm.; USNM 

 142025, Bikini Atoll, Amen Island, lagoon, depth 30 feet, July 31, 1947, 

 Donaldson and Welander, 1 specimen, 60.5 mm. 



Description. — In order to make accurate counts it was necessary to 

 dissect the skin from one side of the fins. The following counts are 

 listed in the same order as the specimens recorded above : Dorsal rays 

 78; 79; 81 and 80; anal 58; 59; 60; and—; pectoral 26; 25; 27; and 29; 

 pelvic rays upon close study seem to be represented by ii raj^s on each 

 side (on superficial examination these appear to be a single ray); the 

 branched caudal fin rays seem to vary, 5 or 6 + 5 or 6; and the gill 

 rakers are represented by about 3 platelets on upper part of arch +1 



" Prosmophycis Gill, Proc. Acad. Nat. Scl. Philadelphia, vol. 13, p. 168, 1861 (type species, Brosmius mar- 

 ginatus Ayres). 

 Haliaa Ayers, Proc. California Acad. Nat. Scl., vol. 2, p. 52, 1861 (type species, Brosmius marginatus Ayres). 



