MUSEUM OF COMPARATIVE ZOOLOGY. 233 



Scyllium retiferiim, sp. nov. 



Moderate, portion behind the vent longer ; head depressed, width nearly 

 equal to its length in front of the spiracles. Distance across the head at ante- 

 rior angles of eyes, from angle of eye to end of snout, between angles of 

 mouth, between outer angles of nostrils, or between angle of nostril and that 

 of mouth, about equal. Shape of body similar to that of S. canicula. Snout 

 moderate, length from mouth less than the distance between the outer margins 

 of the nostrils. Nasal valves separated by an interspace of less than their 

 width, not reaching the mouth, somewhat folded, without a free cirrus. 

 Mouth medium ; the height of the irregular arch formed by its outline is little 

 more than half its width. Labial fold on lower jaw extending nearly one 

 fourth of the distance to the symphysis ; fold on upper jaw rudimentary. 

 Teeth small, alike on upper and lower jaws, bearing a sharp central cusp, on 

 each side of which are two smaller ones, several series in function at the same 

 time. No nictitating membrane. Spiracles small. Gill openings small, 

 fourth and fifth over the base of the pectoral. Pectorals moderate, broad, 

 short, anterior margins curved, extremities rounded. Ventrals rather small, 

 united for a short distance behind the claspers, outer extremity broadly 

 rounded, posterior angle acute. First dorsal much larger than the second, 

 about twice the length of its base in advance of the latter, extending forward 

 above the free portions of the ventrals, insertion very near the middle of the 

 total length. Second dorsal smaller than the anal, which extends below the 

 anterior half of its entire length, not reaching the caudal. Caudal not large, a 

 shallow notch between its upper and lower lobes, upper slightly indented on 

 its hinder margin. Scales of shagreen small, unequal ; on those of the back 

 there are three or five carinae, the median of which is prolonged into an acute 

 point. 



Light brownish, or reddish brown, crossed at irregular intervals by groups of 

 two to four narrow black lines which are joined toward the flanks by short 

 lines in such manner as to enclose polygonal spaces, thus forming a network in 

 which the meshes vary exceedingly iu size and shape. Uniform light yellow- 

 ish below. 



Total length 12.25 ; snout to vent 5.75 inches. 



One specimen, Lat. 38° 22' 35" N. ; Long. 73° 33' 40" W. ; 89 fathoms. 



Ginglsnuostoma cirratum, M. & H. 

 One specimen from Kingston, Jamaica. 



Narcine punctata. 



Var. N. brasiliensis = X. brasiliensis, Var. 1, M. & H. 



Specimens belonging to this variety were taken at St. Vincent. Compared 

 with others from the east coast of South America it appears to depart more 



