24 CHOXDKOPTEEYQII. SELACHOIDEI. 



the first ; caudal without a distinct lower lobe, and no pit at the 

 commencement of the fin. 



Geographical Distribution. Seas of tropical and temperate regions*. 



25. (1.) Mustelus manazo. (Fig. 5.) 



Mustelus mannzo, Meeker, Batav. Gen. Verhand. xxvi, Ichtli. Japan, 

 p. I2(i ; Day, Fuh. India, p. 720, pi. clxxxvi, fig. 3 (see svnon.). 



Pah sorrah, Tel. 



Fig. 5. Mustelus manazo. 



Snout produced and pointed, the length of its preoral portion 

 equalling the width of the mouth (or \ more in the foetus), which 

 latter is somewhat angular. A well-developed labial fold at each 

 angle of the mouth. Teeth rhombic, and destitute of any distinct 

 cusps. Fins the first dorsal arises opposite the posterior end of 

 the base of the pectoral, and does not extend to above the anal ; the 

 second dorsal smaller than the first, but the length of the bases of 

 the two about the same. Pectoral reaches to below centre of first 

 dorsal ; anal commences beneath the posterior half of the second 

 dorsal and is smaller than it. Caudal -| of the total length, its 

 lower lobe moderately developed and notched. Colour reddish 

 grey superiorly, becoming dull white beneath. Posterior extremity 

 of the caudal of a dark colour. 



Hal). Seas of India to Japan. I obtained at Kurrachee a female 

 (16-5 inches in length) which had several young inside. 



6. Genus TRIJENODON, Miiller & Henle. 



No spiracles. Nictitating membrane present. Mouth crescentic, 

 with a pit behind its angle. Teeth numerous in both jaws, and 

 consisting of one central cusp and a smaller lateral one on each side. 

 First dorsal spineless, placed opposite the interspace between the 

 pectoral and ventral fins. Lower caudal lobe distinct. A pit at the 

 root of the caudal tin. 



* Mustelus vuJgaris and M. la-vis hate both been captured in the Red Sea. 



