75 



The following synopsis shows the inter-relations of the Indian families of 

 the Gadoidei : — 



I. At least two dorsal fins : scales present : the ventrals in all Indian 

 species contain six rays or more : air-bladder and pyloric append- 

 ages generally present: — 



1. Second dorsal fin well developed : a normal caudal fin in all 



the known Indian species 



2. Second dorsal more or less rudimentary : the tail tapers to a 



filament 

 II. One dorsal fin : the ventrals consist of one or two filaments, or may be 

 wanting : — 



1. Dorsal fin short, corresponding with the first dorsal fin of 



Macruridee : each ventral consists of one filament. No 

 scales: no air-bladder : no pyloric creca 



2. Dorsal fin long, occupying the greater part of the back : 



ventrals, when present, consisting of one or two filaments. 

 Scales generally present, and air-bladder also. Pyloric 

 appendages present or not ... ... ... OphidiidjE. 



GADIDiE. 



Macrdrimi. 



Ateleopodids. 



Family Gaclidce. 



Two genera are now known to inhabit the seas of India. 



I. First dorsal fin above the pectorals, and consisting of several rays 



an air-bladder 

 II. First dorsal consisting of a single ray placed on the occiput 



Phtsiodlus. 

 Bregmaceros. 



Bregmaceros, Thompson. 



56. Bregmaceros 3Iacclellandii, Thompson. 



Diagnosis and synonomy in Fauna of British India, Fishes, II. p. 433. 



Numerous specimens from the Bay of Bengal, 10, 65, 95 and 145 to 250 

 fathoms ; from off the Andamans ; and from off the Malabar coast 56 to 58 

 fathoms. 



Regd.Nos. 11830, 12387, 12475, 13442-13447, 13563-13587, 



580 



Physiculus, Kaup. 



Physiculus, Kaup, Wiegmann's Archiv. f. Natnrges. 1858, p. 88 : Giinther, Challenger Deep Sea Pishes, p. 87 : 

 Goode and Bean, Oceanic Ichthyology, p. 365 : Jordan and Evermann, Fishes of N. America, III. p. 2547. 



Physiculus and Pseudophycis, Giinther, Cat. Pishes, IV. pp. 348, 350 : vide Challenger Deep Sea Fishes, 

 p. 87. 



Body elongate, covered with small scales. A separate caudal fin. Two 

 dorsals and one anal fin. Ventrals with a narrow flat base ; composed of 

 several rays. A band of villiform teeth in the jaws : no teeth on the vomer or 

 palatines. Chin with a barbel. Seven branchiostegals. Small glandular 

 pseudobranchiae in some of the species. 



