DESCRIPTION OF A NEW MOUSE. 7 



Table of Measure7ne7it$ of five S/ec /mens of Hespevomys Anthonyi roller fed 

 at Camp Apache, Grant County, Nevj JSIcxico, by A. W. Anthony. 



{Measurements in 7iiillimeters). 



Cranial Characters. — The skull, compared with that of 

 H. leucoptis. is short, broad, and flat. The incisor foramina 

 reach past the anterior plane of the first molar. The nasals are 

 short and do not extend so far posteriorly as the premaxillaries. 



Excluding skull Xo. 2S40. which is not full grown, the close 

 agreement in cranial measurements is remarkable. 



Cranial JMcasurements. 



Basilar length ffrom one of the occipital condyles to posterior 

 edge of alveola of incisor of same side) 



Basilar length of Hensel (from inferior lip of foramen magnum 

 to posterior edge of alveola of incisor) 



Greatest zygomatic breadth 



Interorbital constriction 



Greatest length of nasal bones 



Length of upper molar series 



Incisor to molar 



" " post-palatal notch 



Distance between alveolse of upper molar series anteriorly 



" " " " " " " posteriorly 



Foramen magnum to post-palatal notch 



Height of cranium from inferior lip of foramen magnum 



Fronto-palatal depth (taken at middle of molar series) 



Length of mandible 



Length of under molariform series 



No. ; No. ' No. 

 2840 I 2841 I 2842 



cfim.|c?ad.;c?ad. 

 20.3 



I 



18.9 20. 



16.5 

 12.4 

 3.8 

 7.4 

 3.6 

 5.4 

 8.8 

 2.5 

 2.5 

 7.4 

 6.8 

 5.8 

 12.6 

 3.7 



18. 

 12.1 



3.! 



7.) 



3. 



5. 



9. 



2. 



2. 



8. 



7. 



6. 

 12. 



3. 



No. 

 2843 



18. 



12.7 

 3.7 

 8.5 

 3.8 

 5.6 

 9.5 

 2. 5 

 2.5 



3 7. 



2 6. 



9 12.9 



8 3.8 



20.4 



18. 



12.1 

 3.7 

 8.3 

 3.8 

 5.7 

 9.5 

 2.5 

 2.5 

 8.2 

 7. , 

 5.8 



13.2 

 4. 



*The apparent discrepancy between the total length as recorded by Mr. 

 Anthony and that taken from the dry skin is due to the necessary stretching 

 of the fresh specimens for measurement. 



