Dr. W. Miiller on the Scent-organs in PhiyganidEe. 305 



feet. inches. 



Total length to tip of upper caudal lobe .... 10 2^ 



Length of upper caudal lobe 3 1^ 



„ lower „ 1 3| 



Height of 1st dorsal over curve 2 1 



„ „ (vertical) to tip ..... . 1 9 



Width of „ to tip of elongate process 1 3 



Heig-ht of 2ud dorsal 8 



Width of „ 11 



Length of pectoral fin . 1 G^ 



Width „ 1 



Length of ventral hn 11 



Width „ lOi 



Anal fiu, length 7 



„ width 11 



Diameter of eye 1*25 inch ; width of mouth 9-75 inches. 



Hindmost (5th) gill-opening smallest. 



Log. Kurrachee. Captured on the 20th April, 1884. 

 Type in the Kurrachee Milseum. 



This species differs from all the known forms, first, by 

 having its teeth serrated on the edges instead of smooth ; 

 and, next, in having no prolonged groove along the entire 

 front margin of the hammer. From Z. malleus by the less 

 curvature of the head, also by the length of the hind margin 

 of one side of the hammer being more than its greatest width 

 near the eye, and by the shape and position of the fins, 

 especially the 2nd dorsal and ventral fins, which are concave 

 behind instead of being straight. It is nearest Z. moharran 

 (Giinther, Cat. Fish. B. M.), but the length of the hind 

 margin of one of the lateral expansions is greater than the 

 width near the eye, instead of being equal as in that species, 

 and the anterior margin of the hammer does not form a right 

 angle with the lateral lobe. 



This makes the third species of shark lately described from 

 the Kurrachee Harbour. The first is Gavcharias Murrayi^ 

 Giinther, the next Lamna Gilntheri, Murray, and the present 

 one the third. It is a question now whether these three 

 species extend their range along the Beloochistan and Bom- 

 bay coasts. 



XXXIX. — Scent-orgafis in Phryganidae. 

 By Dr. Wilhelm Mullee ^. 



When I first captured a male of Sericostoma {8. personatum^ 

 K. & Sp.), in August 1885, and, induced by the remarkable 



* Translated from the ' Archiv fiir Naturgeschichte,' Jahrg, xxxv. 

 pp. 05-97. 



