577 



In none of the examined specimens of tlie genus Myotis except 

 Myotis nigricans does the coracoid show any mark of bifurcation. 



As to the last-mentioned species the three individuals examined do 

 not agree. In one of them, the dental formula of which is that of the 



2 2 



genus Pipistrellus i. e. pm- — - (vide infra), the coracoid resembles that 



of a Pipistrellus more than that of a Myotis, the distal end forming an 

 angle with the proximal and longer part of the processus and thus 

 showing a tendency to bifurcation ; in the two others , the dental f or- 



Fig. 1. 



Fig. 4. 



Fig. 3. 



Fig. 1. Myotis mystaeinus. X 3. 

 Fig. 3. Pipistrellus pipistrellus. X 3. 



Fig. 2. Pipistrellus annectens. X 3. 

 Fig. 4. Myotis nigricans. X 3. 



mula of which is typical, the tip of the coracoid has the same form as in 

 the other species of Myotis. 



In all the specimens of the genus Pipistrellus and the other forms 

 which I have examined ( Fesper?/^o and VesperusY)ohs.), with the excep- 

 tion of Pipistrellus annectens.^ the coracoid is slightly forked, more or 

 less. In P. aitueetens the coracoid agrees completely with that of My- 

 otis, bearing no resemblance at all to that of Pipistrellus. 



It appears from the above that the species Pipistrellus annectens 

 agrees with the genus Myotis in respect to the form of the skull, the 

 shabe of the ear, tragus and muzzle, in the absence of a postcalcaneal 

 lope, in the proportion between the length of the tibia and the length 

 of head and body, and in the form of the coracoid. 



37 



