KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 48. N:o 5, 103 
The dimensions of my largest and next smallest specimens are as follows: 
Length omnes and Body. 2 ew 105 mm. 86 mm 
» ee a ee es ee Be 39 - 36 
» ee Iai eh RE ede Rar alin in wieateigs 26p er ain 20 19 
» pe eee Grid Were . a, es Sis ate «ste 27,5 » 23,5 
» SOS Saas Slax 6 Sut 4 Jae about 33 23 
Distance from muzzle to ear. ......+5+4+ee+-e 22.5 17,6 
» » » ayers eens Eh Lee ere 12,5 9,2 
> Me Gye to ars yes ile 2) eI ef 10,5 8,1 
Skull: 
Occipuf to tip'of nasal 2... 266 ee et wn 23.» 18,4 
» Se PURMIOINOTA }. Cis> REHele VOIR ys 28,2 » 22.1 
Conelglobaaal lengthy, 1 ds. parked a) eitiieh opal >. » sees 26 20,6 
Condvle) to InGisor tip. . se ijepe ss i oe Sti.» 22 
RENENBROT OTERO. G Soul a eb e.s mk 4, es Hue 6 20,2 » 15 
nease width beninG OFbita’ ss. se te le et ee 6 » 6,7 
Mastoiarpreadth viv Geshe Jt Pet, Qi 13 > 12 
Length of fipialeG, 5. ~)inisinae rit. Aes). kite 9,2 » 6.6 
Combined breadth of nasals in front ........ 4,5 » 3,7 
Combined breadth of upper incisors ........ 3,3» 2,4 
RIS i ste) de | ek wea eas, Sk Ue) oe 10 7,5 
Length of upper molar series .-......+..- 3,3.» 3,4 
RANSOM CR MRIRUE ss gk ee eee a a ec es 8 8 13,6 » 11,7 
As these figures indicate there is a considerable difference in size between the 
specimens collected. This stands of course in connection with difference in age, but 
even the smaller and younger of these two specimens measured above has a plainly 
developed lambdoid crest. Both have three molariform teeth on either side of both 
jaws. As all my specimens are collected in the same locality there cannot, of course, 
be any doubt about their representing the same species. But it is not quite so easy 
to tell at once which. Fornarina is, of course, excluded in consequence of the number 
of cheek teeth. Of the three species of Heterocephalus described, one, viz. H. ansorgei 
Tuomas,’ is very much smaller, if the type has been fullgrown, and its cheek-teeth 
are smaller. H. dunni TuHomas* which is a large species, is said to have a »short 
low coronoid» on the lower jaw as Fornarina, and also the zygomata »very boldly 
expanded as much anteriorly as posteriorly» — — — In my specimens the coronoid 
is high and slender, very different from the type exhibited by Fornarina. The shape 
of the zygomatic arches is probably something intermediate between that exhibited 
by H. glaber as represented by Ripret’s figure*, and H, dunni as described by THomMas 
(l. c.). It is thus comparatively more bowed out in its anterior portion than in the 
former species, but the zygoma is conspicuously more expanded behind than in front. 
Proc. Zool. Soc., London 1903, p. 336. 
Ann. & Mag. Nat. Hist., Ser. 8, Vol. IV, 1909, p. 109. 
Mus. Senckenb. Abhandl., Bd. I, Frankfurt 1845, Taf. X, Fig. 3 a,b, ¢. 
nd 
