E. LÖNNBERG, MAMMALOGY CF ECUADOR. 



55 



1 J* juv. ^^5 1919, near Gualea, 5,000 feet. 

 1 J' ad. 20/2 1920, Gualea, western slope of Pichincha, 

 about 5,000 feet. Found in sugar-cane plantations. 

 Local name »Soche». 



In the year 1915 Allén described^ under the above 

 name a species of brooket, the type locality of which was 

 tbe same as the one from which some of the present speci- 

 mens have been obtained. There can thus be no doubt as to 

 the identity of these specimens as they are topotypes. The 

 skulls of the fully adult specimens of the present collection 

 are, however, distinctly larger than that of Allen's type, 

 as the following measurements prove. This may, however, 

 perhaps be explained so, that Allen's type was either unusu> 

 ally small or perhaps not quite fullgrown. The latter is 

 perhaps the most probable explanation, because the young 

 adult female of this collection which has m^ fully developed 

 and somewhat used, but still retains the much worn milk- 

 premolars, has similar cranial dimensions as those Allén 

 has recorded for the type (also a female). 



As the below published measurements prove, the male 

 and female of this species are practically of the same size. 

 Allén has a measurement registered (1. c. p. 545) as: 

 »ml-^ 27». This means, I suppose, that the combined length 

 of the true molars is 27 mm. In such a case »27» most 

 probably is a lapsus calami for »37». The same thing is 

 repeated for M. fuscata (on p. 546) »29» instead of »39». I 

 presume that this may be the right explanation, otherwise 

 the length of the true molars would be less than half of the 

 length of the whole molar series, which is impossible. With 

 this interpretation the measurements of the present speci- 

 mens agree with those of Allen's. 



cT ad. • ? ad. 



Greatest length of skull 202,5 mm 202,5 mm 



Condylobasal length 193,5 » 195 » 



Basal length 179 » 182 » 



Zygomatic breadth 92 » 92,5 » 



Greatest length of nasals 61,5 » 63,5 » 



Breadth of brain case 61 » 63 » 



Interorbital breadth 48,2 » 40,3 ^ 



^ Bull. Amer. Mus. 



