Dr. Good enough'/ Defcription of ths Porbeagle Shark, isc. Si 



it for my infpc£tion. It had been landed about four hours when I 

 firfl fiiw it. It weighed twenty-fix pounds. 



The length of. the body, from the tip of the nofe to the extre- 

 mity of the tail, was three feet ten inches. The colour of the body 

 was a deep blu« on the back, and white or filvery, underneath. 

 The Iliapc was round, except for about fix inches from the tail, 

 where it was deprefled. At about one inch from the tail was a 

 femicircular or lunar fofiTule or impreflion, the points towards the 

 tail. Where the body was deprefifed, the fides were raifed into a 

 ftiarp angle or elevated line. This line was about eight inches 

 long", and ran out into the middle of the tail, or fomething more. 



The nofe was projeding and fliarp. On either fide from the 

 nofe to the eyes, were numerous minute perforations or pores.- 

 The eyes were placed four inches from the point of the nofe, and 

 were upon an exadt level with the furface of the body. They were 

 an inch in diameter, the pupil black, the irides white. Five inches 

 and a half behind the eyes were five gills {fpiracula) placed in a re- 

 gular feries ; the apertures were perpendicular, and about three 

 inches long : they occupied afpace of nearly three inches and a half. 



Immediately behind the gills were the perioral fins, which were 

 eight inches long, and behind of a femilunar form. Six inches 

 behind the peftoral fins, the ventral were placed ; they were three 

 inches three quarters long, and behind alfo femilunar. Between 

 the ventral fins was a longitudinal aperture nearly three inches, 

 long. Intra Jijfttram uirinque mammilla brevh carnofa f. cartilagi- 

 nea. Four inches behind the ventral fins the anal appeared, one 

 inch feven eighths long. It was placed vertically, behind femi- 

 lunar. The bafe of the tail was four inches from the anal fin. 

 The tail was of a lunar form, vertical, the upper lobe nearly one 

 third longer than the lower. 



Vol. III. M Of 



