102 
DAVIS : NOTE OX ClILAMYDOSELACnUS. 
to Science on December 12th, states that " the differences between 
liimself and Mr. Garman are fictitious rather than real, or better, 
perhaps, they are clnefly differences of expression, but he stiU dissents 
from the opinion that the Cladodontid^ are related to the 
Chiam^^loselachidre rather than the Hybodontida3." 
During July of the present 3^ear, Mr. Garman has published a 
detailed description of " Chlamydoselachus anguineus — a living 
species of Cladodont Shark" in the Bulletin of the Museum of 
Comparative Zoology at Haward College, Vol. XII., No. 1, pp. 1-35, 
Plates I-XX., and the great interest attaching to this recent example 
of a shark which bears, at any rate, a close resemblance in the form 
of its teeth to those of fishes which have been until now considered 
as long ago extinct, and whose only remains capabable of identification, 
consists in the teeth, must be my apology for extracting the 
following resume from the valuable memoir of Mr. Garman. 
The total length of the specimen is 59 o inches. From the snout 
to the angle of the mouth 4-5, to the end of gill-covers 7'0, to base of 
pectorals 8'5, to base of ventals 32*0, to base of anal 39-75, to base 
of dorsal 42-25, and to base of candal 48*5 inches. The width of the 
head across the eyes is 3-5, the diameter of the bod}^ one-fifteenth 
of its length. An elongated body, a long subtriangular and flattened 
head, an anterior mouth, a most extensive gape, jaws bristling with 
shai-p subconical hooked teeth, and a sinister look about the eyes, 
give it a remote resemblance to certain ophidia : and the narrow 
isthmus between the jaws crossed by the free mantle or flap of the 
first gill-cover is strongly suggestive of certain fishes. The resem- 
blance to sharks and fishes is only remote : the shagreen, the fins, the 
teeth, the gill openings, the cartilaginous skeleton, etc., shew the 
animal at once to be a Selachian, one of the sharks. 
The single dorsal and the lai-ge veutrals, anal, and candal, have 
the appearance of being bunched together : they are placed so far 
back as to leave a space almost two feet of the length entirely 
unrelieved by fins, which contributes considerably towards an eel-like 
appearance. 
The skull is short, and jaws and suspensorium (hyomandibular) 
being very long and loosely articulated, the hinder portion of the 
