FAMILY SCORPAENIDAE — SCHULTZ 23 



most of the coral atolls. We examined the type of P. sphex Jordan 

 and Evermann, USNM 50550, and believe it a species distinct from 

 both P. radiata and P. antennata, which it resembles. 



PTEROIS ANTENNATA (Bloch) 



Plate 125,B; Figure 138,; 



Scorpaena antennata Bloch, Ichthyologie ou Histoire naturelle des poissons, 

 vol. 6, pp. 16-17, pi. 185, 1787 (type locality, Amboina). 



SPECIMENS STUDIED 



Bikini Atoll: 3 stations, 3 specimens, 19 to 97 mm. in standard length. 

 Guam: 1 lot, 4 specimens, 47 to 63 mm. 



Description. — Dorsal rays XII, 11, anal 111,6; pectoral 16 to 18; 

 pel vies 1,5. 



Depth 2.9; head 2.4; both in standard length. Snout 3.6; eye 3; 

 postorbital length of head 2.2; least depth of caudal peduncle 4.4; all 

 in length of head. Least width of bony interorbital 1.4 in eye; least 

 depth of caudal peduncle in its length 1.7; pel vies reach well past 

 anal origin; supraorbital tentacle in head 1.2; head in longest pectoral 

 ray 1.7. 



Color in alcohol. — Ground color pale with 10 dark bars: 1 from rear 

 of eye; 2 from area behind orbits to dorsal origin; 3 below spinous 

 dorsal; 2 below soft dorsal; and 2 oblique, 1 on caudal peduncle. The 

 narrow bars between the wide ones just beginning to form. 



Color when alive.- — Rich reddish brovvn vertical bars, margined with 

 white, interspaces light pinkish; basal half of pectoral rays pinkish; 

 the four spots on side of head brownish red; fins barred with white. 



Remarks. — In small specimens, pectoral rays do not reach much 

 past base of caudal fin. 



PTEROIS VOLITANS (Linnaeus) 



Plate 127,A 



Gasterosteus volitans Linnaeus, Systema naturae, ed. 10, p. 296, 1758 (type 

 locality, Amboina). 



SPECIMENS STUDIED 



Saipan: 2 lots, 2 specimens, 44 to 53 mm. in standard length. 

 Guam: 1 lot, 1 specimen, 86 mm. 



Description. — Dorsal raj^s XIII,11; anal 111,7; pectoral 14-14; 

 about 90 vertical scale rows from upper edge of gill opening to mid- 

 base of caudal fin. 



Depth 3.2; head 2.9; both in standard length. Snout 2.8; eye 4.1 ; 

 postorbital part of head 2.4; least depth of caudal i^eduncle 3.4; 

 longest dorsal spine 0.8; length of maxUlaries 2.2; all in length of 



