MUSEUM OF COMPARATIVE ZOOLOGY. 233 
Scyllium retiferum, 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 froni 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 
ach side of which are two smaller ones, several series in function at the same 
time. No nietitating 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 aeute. 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 carina, 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 in 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. 
Ginglymostoma cirratum, M. & H. 
One specimen from Kingston, Jamaica. 
Narcine punctata. 
Var. N. brasiliensis = N. 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 
