NATURAL SCIENCES OF PHILADELPHIA. SI 



ctenoid scales. The lateral line runs high on the sides for the greater part of 

 its length, but is abruptly deflected behind, and thence continued along the 

 middle of the caudal peduncle. The head most resembles that of Brachyrhinus . 

 The preoperculum is serrated on its posterior margin, and has a strong com- 

 pressed spine at its angle. The operculum has three acute angles, the middle 

 continued from an internal rib. The teeth are like those of Serranus, &c. ; two 

 large ones exist on each side of the front, in the margin of the upper jaw, 

 and one on each side, near the symphysis in the lower ; while there are also 

 two on the sides. The vomer and palatine bones have villiform teeth. There 

 are, apparently, only six branchiostegal rays. The dorsal is undulated, and 

 has ten spines. The anal has three strong spines, the second of which is 

 largest. The lobes of the caudal are acute ; the pectorals acutely rounded ; 

 and the ventrals angulated. 



Pronotogrammus multifasciatus Gill. 



The greatest height equals or slightly exceeds a quarter of the length from the 

 snout to the end of the median caudal rays. The head equals a third of that length, 

 and contains the diameter of the eye, which is oval, three times. The 

 snout is less than half the diameter of the eye. The spines of the dorsal 

 rapidly increase to the fourth, which nearly equals a seventh of the length, 

 and thence decrease to the last, which equals about an eleventh of the same. 

 The longest ray about equals the longest spine. The second anal spine is 

 more than twice as long as the first, equals the fourth dorsal one, and is con- 

 siderably longer than the third anal one. The median caudal rays enter 6 

 times in the total length, while the longest exceed the greatest height. The 

 pectoral fin commences little before the end of the first third of the length, 

 (32,) and equals a quarter of that length. The ventral is inserted consider- 

 ably in advance of the pectoral, ( - 28,) and is rather shorter than it. 



1 



D. X. 15. A. III. 6 P. 1. 14. V. I. 5. C. 10. 1. 8. 7. 1. 9. 

 1 

 3 5 



Scales 31+2+12 



17 5 



The latter is deflected on two scales. The color is tawny yellow, with 

 numerous (-20) rufous bands descending nearly to the middle, and rather 

 wider than the tawny intervals. 



Only one specimen, whose extreme length was little more than two inches, 

 was obtained. 



Family CEILODTPTEROIDJEBleeker. 



Genus AMIA Gronovius. 



The Monoprion of Poey is perfectly congeneric with the type of the genus 

 Amia; the genus Apogonichthys of Bleeker appears to be at least very closely 

 related to it, while both genera include forms that do not appear to be strictly 

 allied, but more distinct from the types of the respective genera than the 

 latter are from each other. The species of the old genus may be divided as 

 follows : 



I. Preoperculum serrated. 

 Anal II. 79 (10). 

 23 



Scales 20 28 Amia. 



58 



Scales 33 36 [Apogon kalosoma, Blkr.) Lepidamia. 



Anal II. 12 17 {Apogon Bleekeri, Gthr.) Archamia. 



1863.] 



