BALISTIDAE. 163 



begun its migration from the right to the left side, and what appears to be a 

 yolk-sac i.s not absorbed. It would almost seem that such a large larval form 

 must be abnormal. 



BALISTIDAE. 

 Batistes capistratus 8uaw. 

 Gen. Zool., 1804, 5, p. 417. Jordan & Evermann, Bull. 47, U. S. Nat. Mus., 1898, p(. 2, p. 1701. 



One specimen, No. 3322, 10| inches long from Acapulco has the following 

 counts: — Orbit 4.29 in snout; D. III-31; A. 29; scales 57. 



Another specimen, No. 3323, 65 inches long from the same locality has orbit 

 3.27 in snout; D. III-31; A. 28; scales 65. 



One specimen, No. 3116, M. C. Z. 29716, 13? inches long from Perico Island, 

 Bay of Panama: 



Head from upper end of gill-opening to tip of snout including upper lip, 

 2.89 in length, not including upper lip 3.08; snout measured from orbit not 

 including upper lip 1.28 in head; orbit 4.62 in snout; dorsal III-31 ; anal 29; 

 scales from upper end of gill-opening to scale ending on caudal 53; transverse 

 scales from front of anal to front of dorsal 38, counting upward and backward to 

 middle of soft dorsal 29. 



Another specimen. No. 3117, M. C. Z. 29628, 9| inches long from Perico 

 Island : 



Head including upper lip 2.76 in length, not including upper lip 3; snout 

 without upper lip 1.40 in head; orbit 5.68 in snout; D. III-32; A. 29; scales in 

 longitudinal series 64; in transverse series, from front of anal to front of dorsal 39. 



One specimen, No. 3129, M. C. Z. 29661, lOg inches long from Toboguilla 

 Island, Bay of Panama has orbit in snout 4.30; D. III-30; A. 28; scales 64. 



Another specimen. No. 3131, 82 inches long from Toboguilla Island, has 

 orbit 3.53 in snout; D. III-31; A. 28; scales in longitudinal series 58. 



A third specimen. No. 3130, 7i inches long from Toboguilla Island, has 

 orbit 3.45 in snout; D. III-32; A. 28; scales 64. 



A fourth specimen 4| inches long from Toboguilla Island, among coral in 

 two fathoms of water, has D. 31 ; A. 29; scales 63. M. C. Z. 29557 (1 specimen). 



No. 3116 from Perico Island and No. 3322 from Acapulco have the band 

 encircling the snout very distinct ; in the other specimens it is faded. 



Balistes naufragium Jordan & Starks. 

 Proc. Cal. Acad. Sci., 1895, ser. 2, 5, p. 488. 



One specimen. No. 3115, 9 inches long, from Perico Island, Panama Bay. 

 D. III-26; A. 24; scales 50. 



