POMACENTRIDAE. 135 
Nine specimens, Nos. 3226, 3262, 3263, M. C. Z. 29672, and 3272-77, 5 to 7 
inches long from Wreck Bay, Chatham Island. No. 3262, M. C. Z. 29637, No. 
3272, M. C. Z. 29691, No. 3274, M. C. Z. 29668, No. 3275, M. C. Z. 29682, No. 
3276, M. C. Z. 29629, No. 3277, M. C. Z. 29688. 
Twenty-nine specimens, 1; to 4% inches long among coral in two fathoms of 
water and one specimen, No. 3133, 7% inches long, all from Toboguilla Island, 
Panama Bay. 
Thirty-two specimens, 1 to 43 inches long from Perico Island, Panama Bay, 
in tidal pools and among coral in two fathoms of water. 
Twenty-one specimens, 2% to 4g inches long, and two specimens, Nos. 3369- 
70, 43 and 7 inches long, all from Acapulco. 
Abudefduf declivifrons (GrL1). 
JorpAaNn, Proc. Cal. Acad. Sci., 1895, ser. 2, 6, p. 476. 
Euschistodus declivifrons Giu, Proc. Acad. Nat. Sci., Phil., 1862, p. 146. 
Two specimens 25 to 3% inches long from Toboguilla Island, Panama Bay, 
among coral in two fathoms of water. M. C. Z. 29562 (1 specimen). 
Seventeen specimens #to 14 inches long, Perico Island, October 26, 1904, 
in pool. 
Three specimens 4% to 62 inches long, Nos. 3371-3, Acapulco, February 28, 
1905. No. 3373, M. C. Z. 29632 (1 specimen). 
The 62 inch specimen had head 3.02 in length; depth 1.65; eye 3.72 in head; 
suborbital 5.85; interorbital 2.73; dorsal XIII, 138 (12); anal I, 11 (10). In 
another specimen the dorsal was XIII, 13 (12); anal II, 12 (11); another had 
dorsal XIII, 14 (13); anal II, 11 (10). 
The young are easily distinguished from the young of A. saxatalis by the 
direction of two of the bands; in A. savatalis the band from about the middle 
of the spinous dorsal runs downward and slightly forward to the belly, somewhat 
in front of anal; and the band from posterior part of spinous dorsal extends 
downward and forward, nearly parallel with other toward front of anal. In A. 
declivifrons the band from spinous dorsal extends downward and backward to 
front of anal. The band from the posterior part of spinous dorsal extends down- 
ward and backward to about the middle of anal; each band is of about uniform 
width; in A. declivifrons they are broader dorsally, becoming narrower ventrally, 
making them appear divergent. In A. declivifrons the bands above the lateral 
_ line are much darker, making the pale interspaces appear more distinct (spot- 
like). 
