304 Mr. J. A. Murray on a new Species ofZyggena. 



water, as Prof. Sars thinks. Similar forms occur in deep 

 water and in the neighbourhood of isolated rocks, such as the 

 Bell Eock, and especially on the grounds frequented by the 

 adult. 



XXXVIII. — A new Sj^ecies of Zygsensifrom, the Kurrachee 

 Harbour. By James A. MuREAY, Vict. Nat. Hist. Inst.* 



Zygcena dissimilis, sp. nov. 



(Ex Journ. Bomb. Nat. Hist. Soc.) 



Anterior edge of head sinuately curved. No groove running 

 along it. Length of the hammer from eye to eye 26 inches ; 

 from the middle 13 inches. Each of its hind lateral expan- 

 sions 10 inches ; its width near the eye 6'5 inches, or less 

 than the length. Eye situated at the upper third of the ex- 

 ternal edge of the lobe of the head, and 2 inches below the 

 outer edge of the nostril. Teeth very slightly oblique, as 

 broad at base as long, with an indistinct notch laterally and 

 serrated on both edges to near the tip. They are convex 

 before and behind, with an oblong nodose prominence mesially 

 at the base on the outer surface. The 1st dorsal arises from 

 a little more than an inch inside the extreme hind edge of 

 the pectoral fin ; it is falcate in shape and measures along the 

 curve to tip 25 inches ; the greatest width to hind prolonga- 

 tion at the base 15'75 inches. Pectoral fin 18 x 12 inches, 

 or one third longer than broad. Second dorsal arises from 

 opposite the anal ; it is triangularly concave behind, and not 

 straight as depicted in the plates of Zygcena malleus^ Blochiy 

 and Tudes in Day's Fishes of India, and it has also an elon- 

 gated process at base. Ventral fin 11 x 10*5 inches, also 

 triangularly concave behind, and not straight as in the other 

 species. Anal fin 7 x 11 inches, concave behind, the dis- 

 tance from its insertion to the tip of the elongate process of 

 the ventral 5 inches. A pit at the root of the caudal ; upper 

 caudal lobe falcate, lower proportionally longer than in the 

 other species. Colours brownish grey throughout, except a 

 width of 10 inches on the under surface, and the under surface 

 of the hammer, where it is white. 



The following are the measurements of this species taken 

 in the flesh : — 



* From the ' Indian Anuals and Magazine of Natural Science,' Jime 

 1887, pp. 90-02. 



