[5] HISTORY OF THE TILE-FISH. 241 



'• The distance of the adipose dorsal from the snout (.206) equals 

 nearly three times its height (.07) ; its length of base (.123) equals the 

 length of the snout. The height of the adipose dorsal equals the dis- 

 tance from the tip of the ventral to the vent. 



" The distance of the spinous dorsal from the snout (.347) equals the 

 distance of the ventral from the snout (.347) ; its length of base (.144) 

 equals the length of the caudal i)eduncle. The first spine is imper- 

 fect — what remains of it is one-third as long as the third spine (.09). 

 The second spine (.082) is about equal to the width of the interorbital 

 area. The fourth and the sixth spines are equal in length (.097), and 

 equal the distance from the end of the snout to the x)osterior nostril. 

 The fifth spine (.095) is a little shorter than the sixth. The last spine 

 (seventh) is contained ten times in the total length. The length of the 

 first ray of the soft dorsal (.094) equals the distance between the anterior 

 nostril and the end of the snout. The thirteenth and longest ray (.147), 

 about equals the length of the base of the spinous dorsal. The last ray 

 (.07) is half as long as the thirteenth. The thirteenth ray of the soft 

 dorsal extends to the origin of the external caudal rays. 



" The distance of the anal from the snout (.60) is about equal to twice 

 the height of the body at the ventrals. The length of the anal base 

 (.318) is slightly more than twice the length of the mandible. The first 

 anal spine (.04) is half as long as the second dorsal spine. The second 

 anal spine (.075) is half as long as the upper jaw. The first ray of the 

 anal (.102) is as long as the last spine of the dorsal. The eleventh and 

 longest anal ray (.134) is contained seven and one-half times in the total 

 length, and nearly equals the length of the middle caudal rays. The 

 last anal ray (.078) is half as long as the mandible. The eleventh ray 

 of the anal extends almost to the perpendicular through the origin of the 

 middle caudal rays. 



" The caudal is emarginate, the external rays being only one and one- 

 half times as long as the middle rays. The length of the superior 

 external rays (.216), measured from the origin of the middle rays, equals 

 one and one-half times the length of the spinous dorsal base. 



"The distance of the pectoral from the snout (.32) very slightly ex- 

 ceeds the length of the anal base. The length of the pectoral of the 

 right side (.244) equals twice that of the snout. The pectoral of the left 

 side is probably imperfect, its length (.216) being equal to that of the 

 superior external caudal rays. The right pectoral can be made to reach 

 the vent ; in its natural position it extends to the perpendicular let fall 

 from the fourth ray of the second dorsal. 



"The distance of the ventral from the snout (.347) equals four times 

 the least height of the tail. The length of the ventral (.183) equals 

 twice that of the third dorsal spine, and it extends to a point under the 

 third dorsal ray. The distance from the tip of the ventral to the vent 

 equals half the length of the middle caudal rays. The vent is under 

 the interval between the fourth and fifth dorsal rays. 

 S. Mis. 46 16 



