SIWALIK AND NARBADA CARNIVORA. 
113—290 
the Jamu hills may possibly be of pleistocene age. Either this or a closely allied 
form also occurred in the pliocene, or pleistocene, of China ; and it would be a matter 
of extreme interest to obtain remains of liysenas from the Siwaliks of Burma, as the 
country lying between India and China, since if the present species occurred there it 
would render it more probable that it might be specifically the same as the Chinese form. 
Species 2 : Hytena colvini, n. sp., nobis. 
Syn. Hycena sivalensis , Falc. and Caut., in parte. 
Bistory. — This species is mentioned here for the first time, the specimens on 
which it is founded . having either been referred simply to the genus Hycena, or to 
H. sivalensis of Falconer and Cautley. 
Cranium. — In figure 2 of plate XXXV. of the present volume there is represented 
the skull of a Siwalik hyaena, formerly in the collection of the Asiatic Society of 
Bengal, and now in the Indian Museum (No. D. 47). In the catalogue of the 
former collection by Drs. Falconer and Walker 1 it bears the number S. 848 ; and is 
simply referred to the genus Hycena, being described as “ fragment of cranium a good 
deal crushed, and mutilated behind the orbits, showing all the teeth on the right 
side, except the small premolar ; the teeth are considerably larger than those of the 
existing Indian Bycena. On the left side canine seen in section.” The specimen 
was presented by Col. Colvin, and is numbered 600 in the list of fossils given on 
page 184 of the Vth volume of the “Journal of the Asiatic Society of Bengal.” 
In its present condition it shows on the right side the base of m. 1 ; pm. 4 , with the 
summit of the middle lobe broken off, and showing a considerable degree of wear in 
the first and third lobes ; the third premolar ( pm. 3 ), also abraded at its summit ; the 
base of pm. 2 ; the alveolus of the canine (c), filled with matrix ; and the bases of 
the three incisors. On the opposite side there are the bases of the corresponding 
teeth as far back as pm. 2 . No trace of pm. 1 is to be seen on either side, and pm. 2 is 
in proximity to the canine. In the figure the teeth of the left side have been 
restored. The worn condition of the cheek-teeth shows that the skull belonged to a 
fully adult animal. In the following table its dimensions are compared with those 
of the type skull of H. felina , and of recent skulls of H. crocuta and II. striata ; 2 : — 
H. felina. 
Specimen. 
H. crocuta. H. 
striata. 
Width of palate at pm. 4 . 
. 4-3 (?) 
3-553 
4-15 
3-5 
Interval between posterior border of palate 
and 
anterior border of incisive alveoli 
\ 4-7 
4-52 
4-9 
4-74 
Interval between molar alveoli and orbit 
.' 1-79 
119 
Space occupied by incisors .... 
1-75 
1-36 
1-5 (1-49) 
1-23 (1-27) 
Interval between canines .... 
1-55 
1-18 
1-2 
,, ,, hinder border of pm. 4 and canine 3-14 
30 
3-4 
2-87. 
,, ,, canine and pm. 2 
0-24 
0-21 
0-55 
0-42 
,, ,, m. 1 and middle line of palate 
1-65 
0-96 
1-55 
0-85 
Length of pm. 2 
0-61 
0-6 (0-67) 
0-68 (0-62) 
„ „ „ 3 
0-85 
0-85 
0-88 (0-94) 
0-88 (0-8) 
,,,,,, 4 
1-5 
1-48 (1-46) 
1-2 (1-27) 
Transverse diameter of m. 1 
0-22 (?) 
0-59 
0-2 (0-2) 
0-58 (0-5) 
Antero -posterior diameter of third incisor 
0 49 
0-41 
. 189. See also “ Palaeontological Memoirs,” vol. 
I., p. 343. 
2 The numbers in brackets indicate means. 
3 Estimated by taking twice tbe width of the right side. 
B 2 
