E. LÖNNBERG, MAMMALOGY OF ECUADOR. 71 



brown hairs and a set of longer paler hairs surround the 

 claws. The ears jire scantily covered vvith short hairs. The 

 labial flaps, to be described below, are to be seen even on 

 the dry skins. 



The male is mueh larger than the female and is provided 

 with a long scrotal säck which is well covered with hair like 

 the body. 



Length of dry hind foot of male fully 21 mm (s. u.). 

 Length of tail of male approximately 130 mm, head and 

 body probably 2,5 to 3 cm longer (the skin being 14,5 cm). 

 Ear 14 X 90 mm. 



Cranial measurements : 



(f & 9 



Total length 32,5 mm 33,3 mm 28,3 mm 



Condylobasal length 32,0 > 33,0 » 27,7 » 



Zygomatic breadth 16,0 » (16,o) » 13,1 » 



Greatest length of nasals ..... 15,0 » 16,0 » 13,7 » 



Interorbital breadth 7,0 » 6,4 » 7,2 » 



Breadth of brain case 11,3 » 11,7 » 11.3 » 



Length of palate (to tip of premax.) 18,3 » 19,4 » 15.9 » 



» T) foramina incisiva (an t. 



pal. f.) 6,5 » 6,3 » 5,4 » 



Combined longth of m^ — m^ ... 5,3 » 5,3 » 5,3 » 



Lower jaw, tip of i^ to condyle . . 25,8 » 26,0 » 22,0 » 



Upper tooth series from c to 7n* . 12,5 » 13,2 » 11,8 » 



» » » » i^ » y> . 17,5 » 18,0 » 16,0 » 



The dental formula of Gaenolestes. 



When Thomas, 1895, wrote about the dentition of Gae- 

 nolestes he oonsidered that this animal had the following 

 dental formula i |; c J; p. f; m |. Trouessart has been 

 unfortunate with a misprint^ as he writes: »Mol. J». As the 

 author quoted indicates the number of teeth to 46 it is 

 quite clear that the quoted molar formula is due to an error 

 in printing. Quite recently, however, Thomas^ appears to 

 have changed his mind, so that he writes the same formula 



* La Nature, 1913, p. 387- 



2 Proc. U. S. Nat. Mus. Vol, 58, p. 244. 



