8 



PEOCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 72 



EXPLANATION OF PLATE 

 All figures natural size 

 Fig. 1. Plagiodontia hylasum. Skull and right mandible of type. 



Fig. 2. Plagiodontia sedium. Right mandible, from San Pedro de Macoris, 

 Dominican Republic. 



Measurements of Plagiodontia 



Number 



CO 



o 







o3 



'3 



o 

 -a 

 M 



•H hJO 

 GQ 



a 



1 

 o 

 % 



P 

 O 



D 



a 



Si 

 ■^ 

 IS 



C3 

 P 



.B 

 .S 



a 



a 



o 

 bo 



_6 



a 

 o 

 o 



1.2 



o 



« 



1— 1 



(3 

 1 



'3 



03 



ft 



,s 



8 

 o 



flg' 



T3 



Is 



2; 



si 



03 



H 



e 



o 

 O 



03 



i 



03 



s 



3 

 a 



a 



a 



o 



°§ 



03 



o 



P 

 1 



P. sedium: 

 217126 1 

































62+ 



28+ 

 27.6+ 



21.4 

 23.0 



23.4 

 25.2 

 25.0 

 24.2 

 24.0 

 24.6 

 25.0 

 23.8 

 24+ 



18.8 

 19.2 

 20.2 

 21.0 

 19.8 

 18.8 

 20.4 

 19.8 

 20.6 

 20.0 



20^4 



20± 



24,0 



2 

































23 4 



P. hylseum: 



239886 



239887 3 _. 



239890 



c? 



o' 

 c? 

 c? 



9 



9 

 9 

 9 



348 

 372 

 380 

 363 

 386 

 405 

 384 

 387 

 365 

 360 



127 

 140 

 130 

 137 

 146 

 130 

 143 

 140 

 140 

 143 



70 



72 

 74 

 71 

 72 

 74 

 74 

 70 

 74 

 71 



72.4 

 74.0 

 74.8 

 78.2 

 75.0 

 74.2 

 77.2 

 72.8 

 76.0 

 74.0 



64.2 

 66.4 

 68.0 

 70.2 

 67.8 

 65.4 

 67.8 

 60.6 

 61.2 

 64.0 



36.4 

 38.2 

 40.4 

 40.8 

 39.2 

 38.2 

 38.0 

 37.8 

 38.8 

 37.0 



39.0 

 40.6 

 42.6 

 44.0 

 44.4 

 43.0 

 42.8 

 42.6 

 39.8 

 40.8 



16.6 

 18.8 

 20.2 

 19.8 

 19.2 

 19.0 

 20.0 

 19.0 

 19.0 

 17.6 



26.4 

 26.0 

 27.4 

 29.2 

 27.2 

 28.0 

 26.8 

 27.0 

 27.2 

 26.8 



16.8 

 16.6 

 16.8 

 17.4 

 17.2 

 17.8 

 17.2 

 17.0 

 16.6 

 16.8 



15.0 

 16.0 

 17.0 

 16.8 

 16.4 

 17.8 

 15.6 

 15.8 

 16.0 

 17.0 



23.0 

 24.6 

 24.6 

 25.8 

 23.6 

 25.0 

 24.0 

 23.4 

 24.8 

 25.4 



8.0 

 9.0 

 9.6 



10.8 

 9.8 



10.2 

 9.8 

 9.0 

 9.8 

 9.6 



15.8 

 16.6 

 17.2 

 17.6 

 17.2 

 16.6 

 16.2 

 16.2 

 16.6 

 15.4 



51.0 

 52.6 

 53.8 

 54.4 

 55.0 

 52.0 

 55.2 

 54.2 

 55.2 

 52.6 

 52+ 



18.6 

 19.4 

 20.2 



239891 



239892 



239895 



20.6 

 19.6 

 19.4 



239888 



239889 



239893.. 



20.2 

 20.0 

 20.6 



239896 



200412 * 



19.8 



217112 1 



















18.8 







16+ 



-— 



10.2 



17.4 





221023 «- 























52.4 



22.6 



19,0 



221024 ^ 































17.6 









































1 San Pedro de Macoris, Dominican Republic. 



2 San Michel, Haiti; not numbered. 



3 Type. 



« San Lorenzo Bay, Dominican Republic. 



o 



