150 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



This excellent material makes it possible to give a number of 

 additions and corrections to the original description. 



The premaxillary band of teeth is of nearly uniform width, nar- 

 rowing on its posterior third. A modified inner portion of much 

 smaller teeth is constantly present. It is sharply defined from the 

 outer portion, being separated from it by a longitudinal groove, and 

 is widest somewhat behind the middle of the maxillary, narrowing 

 in both directions, and extending forward to the anterior third of 

 the outer band. In the young, about 130 mm. long, this modified 

 inner portion of the band is nearly as wide as the outer portion, and 

 is separated from it by a groove more distinct than that of the adult. 

 The mandibular band is very narrow, comparatively little curved in 

 cross section, and consisting of about 3 or 4 irregular rows of teeth 

 similar to those of the outer premaxillary band. Xo trace of a 

 barbel can be found on any of the specimens. The pseudobranchial 

 filaments are always present, and are located at the edge of a deep 

 conic pit. 



Inner edge of shoulder girdle naked. 



Pyloric caeca in five specimens : 10, 15, 16, 16, 18. 



Anus located immediately before the anal fin. 



The slender lin filaments were evidently broken in the type of the 

 species, none of the fins being described as longer than the head. In 

 our specimens the dorsal, pectoral, and ventral filamentary rays, 

 when entire, are all longer than the head. In a paratype of B. 

 howersi^ from the Hawaiian Islands, the pectoral filamentary ray 

 appears entire, and is much shorter than the head. Further compari- 

 son with B. howersi is made in the table of measurements. 



Gilbert. P>ull. U. S. Fish Comm., 1903 (1905), pt. 2, p. 659, fig. 257. 

 Paratype of B. bowersi. 

 A pseudocaudal developed. 



