446 Bulletiti American Museum of Natural History. [Vol. XIX, 



4 short stout, spines and 1 2 articulated rays. The longest anal 

 spine is only 7 mm. long, and all the spines are entirely smooth. 

 The ray which I recognize as the first articulated one is very 

 stout and resembles one of the spines, but it is divided and 

 articulated at the distal end. 



The base of the left pectoral fin is present. The pelvic fin 

 has its origin directly below the pectoral. The first ray is 

 long and thick, the length being 13 mm. and the extremity 

 reaching the anal fin. There are at least 5, and possibly 6 

 or 7, articulated rays; but the number cannot be definitely 

 determined. The caudal fin is forked, but the extremities 

 of the rays are not exposed. Seven branchiostegal rays are 

 counted. There are 14 caudal vertebree. 



The scales are thin, and their hinder borders have a per- 

 fectly smooth edge. They are rather large, there being about 

 8 longitudinal rows above the vertebral column and 1 2 below 

 it. The greatest height of the body equals 38 mm.; the dis- 

 tance from the pectoral arch to the base of the caudal is about 

 28 min. 



This fish has been assigned provisionally to the genus 

 Aipichtys, but it possibly belongs to Acrogaster, of the Bery- 

 cidae. Nothing is known regarding the structure of the head, 

 and the number of the pelvic soft rays is uncertain. The 

 rather large scales suggest Acrogaster; while, on the other 

 hand, there appears to be a series of thickened scales along 

 the lower edge of the abdomen, as in Aipichtys. 



From all the described species of Aipichtys this differs in 

 having a smaller number of anal rays. 



From Acrogaster heckelii this fish differs in having a greater 

 number of anal spines and a smaller number of articulated 

 rays. 



Collected at Hajula. 



