168 BULLETIN 43, UNITED STATES NATIONAL MUSEUM. 



provided with a median groove wliicli begins abruptly at the junction 

 of tlie sagittal with the anterior temporal crests and reaches a point 

 half way to the anterior nasal aperture. The fronto maxillary infla- 

 tion extends over the entire face vertex. The short infraorbital cana 

 is provided with an elevated ridge-like outer wall, which carries a pit. 

 A large foramen unites the nasal chambers near tlie posterior nasal 

 aperture with the mesopterygoid fossa. The otic foramen converted 

 into a notch, thus permitting the otic capsule to be exposed the entire 

 length on the side of the skull. The paroccipital process is inconspic- 

 uous and ends at a point about on a level with the mastoid process 

 The interval is occupied entirely by the otic capsule. The tympanic 

 ring is complete. The sphenoidal tongue is rudimentary or' absent. 

 The coronoid process is less than half the height of the horizontal 

 ramus. The angle is scarcely produced back of the line of the condyle. 

 The interval between the two is almost straight. The angle is broad, 

 flat, acuminate and is markedly deflected outward so as to be almost 

 free from the line of the condyle when seen from above. The masse- 

 teric impression is deepbut does not reach the lower border of the ramus. 

 The post-symphysal process is absent. The incisive notch deep as in 

 vespertilio and allies. 



The following notes will be of interest in connection with the study 

 of the skull of W. brasiliensis: 



K orthotis.— The sagitta is well defined. The face vertex is elevated 

 with scarcely any depression. The fronto-maxillary inflation is rudi- 

 mentary. The zygoma is without elevation on the upper border. The 

 basisphenoid fossie is well marked. The postpalatal spine is absent. 

 The infraorbital canal is long, permitting the line of the anterior nasal 

 aperture to fjill back of the facial foramen. The coronoid is less ele- 

 vated, while the angle is longer and less acuminate, ami lies far beyond 

 the condyle. 



J\r. norfolcensis.— The sagittal crest is absent. The ftice vertex is 

 with shallow depression, but conspicuous orbital ridge and lachrymal 

 tubercle. The coronoid process is high, greatly exceeding the width 

 of the adjacent ramus. The angle is widely deflected from the line of 

 the condyle. 



J\r. eiirops.— The sagitta is absent. The orbit crest is scarcely de- 

 fined. The lachrymal tu bercle small. The zygoma is without elevation 

 on the upper border. The coronoid process above the line of the con- 

 dyle is a mere tubercle, and greatly less than the width of the adjacent 

 ramus. 



Notes on the skeleton. — Atlas: The lower opening for the vertebral 

 artery is much larger than the upper; below it a spine projects down- 

 ward and outward. 



Scapula: The upper half of the subscapular fossa limited inferiorly 

 by an oblique keel. The vertebral border of this subfossa is concave 



