GIXGLYMOSTOMA. 
141 
Squalus tigrinus, L. Gm. i. p. 1493. no. 19. # 
— longicaudus, L. Gm. i. p. 1496. no. 24. 
Russell, pi. 18 (young). 
Scyllium heptagonum, Rupp. N. W. Fische, pp. 61, 74, pi. 17. f. 1. 
Stegostoma carinatum, Blyth, Journ. Asiat. Soc. Ben. 1847, p. 725, pi. 25. f. 1 & la. 
fasciatum, Mull, fy Henle, Plug. p. 24; Cant. Mai. Fish. p. 396; Dumeril, Hist, des Poiss. i. 
p. 337. 
There are three specimens in this collection: — one [132], measuring 10 inches, corre- 
sponding to Russell’s plate; another [721] corresponding to Cantor’s “ older variety,” 
length 2 feet; and the third [513], of the same size as the second, which appears to be 
an undescribed variety. 
It is identical in structure with the ordinary specimens ; but the coloration is very 
different. Taking the light yellow of the under portions as the ground-colour, the 
upper and lateral parts of the head and body are densely ornamented with undulating 
brown stripes, darker on the edges than in the middle. On the tail these vermiculated 
stripes assume the appearance of more or less regular transverse bands, from forty to 
fifty in number, counting from the second dorsal. The sides of the belly are yellowish, 
minutely dotted with brown ; the lower portions are immaculate. 
Aden. Zanzibar. Madagascar. Indian Ocean and Archipelago. 
GINGLYMOSTOMA, Mull. & Henle. 
484. Ginglymostoma brevicaudatum, sp. n. Plate XXI. [710.] 
Head very fiat, depressed. Snout short, rounded, obtuse. Caudal comparatively 
short, its length being contained four times and a half in the total. 
The nasal margin of the upper lip is provided in its middle with a very short cirrus. 
The isthmus between the postlabial folds of the lower jaw is about as wide as each of 
these folds. Eye very small. Spiracle minute, situated close behind the eye. The 
angles of all the fins are rounded. The dorsal and anal fins are equal in size ; the 
origin of the first dorsal is a little behind the middle of the base of the ventral : 
the interspace between the two dorsals is scarcely longer than the base of the 
first ; the second dorsal commences somewhat before the anal, and terminates a little 
before the posterior end of that fin. Posterior margin of caudal excised ; its lower 
lobe is obtusely rounded. Pectorals subquadrangular, with the posterior margin very 
much rounded. Scales distinctly larger than in G. cirratum ; those on the head are 
smooth ; those on the back have from one to three keels, which become spinous on the 
scales of the side. 
Upper parts dark brown, with minute black dots; the lower surface brownish white. 
Total length 25 inches. Distance of vent from extremity of snout 12 inches. 
Zanzibar. 
