484 PROCEEDINGS OF THE ACADEMY OF [1899. 



opercles are evenly striated, the striations formiDg small serrations 

 on the posterior margin. The interoperculum has 4 or 5 tooth- 

 like serratures on its posterior margin. The suboperculum is 

 nearly smooth, the striations being indistinct, though there are 

 several feeble serrations along the upper and lower portions of 

 the posterior edge. There is a very narrow bony border around 

 the eye which has its outer edge finely serrate. There are 6 pi'feor- 

 bital spines, the outer of which are much larger than the 4 central 

 ones, situated along the lower edges of the praorbital bones, they 

 all point downward. The superior cranial bones are strongly 

 radiated. The maxillary extends to the anterior margin of the 

 pupil of the eye. SujDplemental maxillary large. The eye is 

 placed above and somewhat anterior to the centre of the head. 

 Teeth all minute. The distance between the origin of the D. and 

 the occiput is a little less than the length of the prseopercular 

 spine, the tip of Avhich is directly below the former, while the inser- 

 tion of the P. is more posterior and the insertion of the V. still 

 more so. The third D. spine is the longest, the last being the 

 smallest and equals the second A. spine. The spines of the D. 

 are all more or less equal in thickness, not being swollen or one 

 much thicker than the other. The membrane connecting the 

 last D. spine with the first soft ray of the same fin is adnate to 

 the latter only at the extreme base. The soft D. is a trifle higher 

 than the spinous D., and its base is contained in the latter about 

 three times, and with its first ray not spinous. The caudal fin is 

 forked and with the upper lobe veiy little longer than the lower 

 and both lobes are beset both along the upper and lower basal 

 edges with 5 rudimentary rays, all of which, excepting the last 

 posterior, are spinous. The third spine of the A. is greatly en- 

 larged and broadened and the fourth is ensheathed in its posterior 

 excavation. The first A. spine is exceedingly minute, being con- 

 cealed by the scales around the base of the fin. The P. and V. are 

 of equal size, the first ray of the latter being spinous and a little 

 longer than the innermost, while the first ray of the P. is very 

 short. Lateral line slightly recurved at first, then sloping gradu- 

 ally to its termination, though it does not run along the centre of 

 the caudal peduncle laterally and the pores do not exist on several 

 of the most posterior scales. Scales not striated, but with the 

 posterior edges finely serrated. There is a row of scales along the 



