4 ON NEW GENERA AND SPECIES OF FISHES 
which I am only prepared to acknowledge two families, 
the Scyliorhinide with 5 genera and the Orectolobide with 
9 genera. 
It also necessitates the formation of a second new 
genus for the reception of Giinther’s Chiloscyllium modestum 
—the very species on which Mr. Waite relied for the founda- 
tion of his family—but which is not strictly congeneric 
with Brachelurus and necessarily much less so with 
Hemiscyllium. 
CIRRISCYLLIUM gen. nov. 
Differs from Brachelurus in the larger, wider, and 
strongly depressed head; in the anterior position of the 
mouth, which is well in advance of the middle of the eye ; 
in the ovate spiracles, which are only partly behind the 
eye; in the more posterior insertion of the anal fin, which 
is approximate to and far overlaps the caudal ; and in the 
much larger scales.. (cirrus, a lock of hair, here signifying 
a ‘‘tentacle” ; Scyllium, an allied genus=WScyliorhinus : 
in allusion to the great development of the nasal cirrus in 
comparison with that of the Hemiscylluine). 
Type—Chiloscyllium modestum Ginther. 
Coasts of Queensland and New South Wales. 
BRACHZLURUS COLCLOUGHI Sp. NOV. 
Body robust, its depth 72 in the total length. Width 
of head equaling its depth and § of its length, which is rather 
less than 3 of the trunk and 5% in the total length ; upper 
profile of head evenly rounded ; preoral length 3 of that of 
the head. Anterior angle of nostril equidistant from the 
mouth and the tip of the snout ; internasal width about 
equaling the preoral length and $ of the width of the mouth ; 
nasal cirrus # of the preoral length, not extending to the 
lower labial groove, and 14 time the diameter of the eye 
in length. Mouth much nearer to the eye than to the tip 
of the snout, its width 2%. that between the outer angles 
of the labial grooves 2? in the length of the head. Eye 
somewhat nearer to the tip of the snout than to the first 
gill-slit, its longitudinal diameter 62 in the length of the 
head. Interorbital region flat with a slight median groove, 
its width 22 in the head. Spiracle subvertical, situated 
in a deep ovate rimmed pit, its diameter 3 of that of the eye. 
Branchial region 22 times the diameter of the eye ; width 
