BALISTIDAE. 163 
begun its migration from the right to the left side, and what appears to be a 
yolk-sac is not absorbed. It would almost seem that such a large larval form 
must be abnormal. 
BALISTIDAE. 
Balistes capistratus Suaw. 
Gen. Zool., 1804, 5, p. 417. Jorpan & EverMAnN, Bull. 47, U.S. Nat. Mus., 1898, pt. 2, p. 1704. 
One specimen, No. 3322, 103 inches long from Acapulco has the following 
counts: — Orbit 4.29 in snout; D. III-31; A. 29; scales 57. 
Another specimen, No. 3323, 6% 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, 133 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, 92 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, 103 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, 83 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, 7z inches long from Toboguilla Island, has 
orbit 3.45 in snout; D. III-32; A. 28; scales 64. 
A fourth specimen 43 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 Jorpan & STarRKs. 
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. 
