PLIOCENE HARES FROM IDAHO — GAZIN 121 



Table 1. — Measurements (in millimeters) of skull and superior dentition 



Measurement 



Hypolagus 

 limnetus 



U.S.N.M. 



no. 12619 



(type) 



Hypolagus 

 furlongi 



C.I.T. 

 no. 1325 



Length of skull from anterior surface of incisors to supra-occipital 



Length of skull from anterior surface of incisors to inferior margin of foramen 



magnum.. 



Distance from anterior surface of incisors to bony palate 



Length of anterior palatine foramina.. 



Greatest width across anterior palatine foramina 



Least anteroposterior length of bony palate 



Distance from posterior margin of bony palate to posterior margin of basisphenoid. 



Width of posterior narial passage immediately posterior to bony palate.. 



Distance from anterior margin of basi-occipital to foramen magnum... 



Anteroposterior diameter of tympanic bulla 



Greatest transverse diameter of tympanic bulla 



Distance between bullae 



Distance from dorsal surface of supra-occipital to superior margin of foramen 



magnum.. 



Greatest width across occipital condyles 



Width across postorbital constriction 



Depth of anterior portion of zygomatic arch 



Greatest width across anteroventral prominences of zygomatic arches 



Length of diastema between alveoli of I^ and P' 



Length of cheek tooth series, P^ to M', inclusive, measured at occlusal surface... 



Length of cheek tooth series measured along alveoli 



I', anteroposterior diameter 



1', transverse diameter 



P2, anteroposterior diameter. 



P2, transverse diameter 



PS anteroposterior diameter 



PS transverse diameter at occlusal surface. 



M3, anteroposterior diameter 



M', transverse diameter 



'67.0 



55.7 

 21.0 

 15.5 



6.3 



5.5 

 20.4 



4.5 

 10.1 

 13.3 

 10.5 



7.0 



16.0 



12.5 



10.8 



5.8 



30.7 



17.1 



10.7 



12.1 



1.7 



2.3 



1 L4 



2.6 



2.0 



4.0 



0.9 



1.4 



11.3 

 12.6 



1.6 

 2.7 

 2.0 

 4.1 

 1.0 

 1.6 



1 Approximate. 

 Table 2. — Measurements (in millimeters) of mandihle and inferior dentition 



' Approximate. 



U. S. GOVERNMENT PRINTING OFFICE: 1934 



