38>^ CARCHARIID.?':. 



of the pectoral, its hinder lobe extending to the vertical from the root 

 of the ventrals. Body with numerous round small black spots ; 

 posterior margin of the caudal black. 



Hab. ? 



a. One of the typical specimens. From the GodefFroy Museum. 



This species has been referred to Triads; but the arrangement of 

 the teeth is as in Mustelus ; the lower are obtuse, and the upper pro- 

 vided with very short cusps only, reminding us of the .teeth of M. 

 Imvis. Yet it must be confessed that this species connects those two 

 genera, which in preceding systems are the types of families ! 



Mustelus dorsalis, Gill, Proc. Ac. Nat. Sc. Philad. 1864, p. 149, 

 from Panama, agrees with M. maculatus in all the characters men- 

 tioned by the author in the diagnosis ; however, he does not describe 

 the coloration. 



