NO. 12 MAMMALS FROM CUBA AND SANTO DOMINGO MILLER 7 



Remarks. — The genus Brotomys is remarkable for its combina- 

 tion of robust skull with weak teeth. It differs too widely from all 

 of the existing genera to require any special comparisons. From the 

 extinct Heteropsoniys of Porto Rico (pi. i, fig. 2) it is at once dis- 

 tinguishable by the relatively large antorbital foramina, horizontal 

 anterior zygomatic roots, slightly emarginate palate, and perhaps by 

 a more simplified enamel pattern/ 



BROTOMYS VORATUS, sp. nov. 



Type. — Anterior half of skull (lacking the nasal bones and second 

 and third molars). No. 217117, U. S. National Museum, collected in 

 kitchen midden at San Pedro de Macoris, Santo Domingo, by 

 Theodoor de Booy. Presented by George G. Heye. 



Characters. — As in the genus ; measurements : distance from front 

 of incisor to back of m^ (alveoli), 26.6; palatal length, 25.4; palatilar 

 length, 23.0 ; probable length of nasals, about 18 ; inteforbital breadth, 

 14.6; palatal breadth including alveoli of second molars, 7.2; least 

 breadth of palate between premolars, 2.0 ; least breadth of palate 

 between posterior molars, 3.2 ; rostral breadth across nasal rim of 

 premaxillaries, 9.2; depth at middle of molar series, 14.8; probable 

 depth behind incisors, about 14; maxillary toothrow (alveoli), lo.o; 

 crown of m\ 2.2 x 2.4. 



Specimens examined. — In addition to the type the following bones, 

 probably representing about 6 individuals, all collected by Mr. de 

 Booy at Macoris, appear to be referable to this species : humerus 

 (right) 2, (left) 3; innominate (right) i; femur (right) 3, (left) 

 2: tibia (right) 2, (left) 5. 



BOROMYS, gen. nov. 



Type. — Boroniys offella, sp. nov. 



Characters.- — Similar to Brotomys but antorbital foramen with 

 well developed secondary groove for nerve ; roots of incisor produc- 

 ing an evident swelling on side of maxillary above neural groove ; 

 cheek-teeth relatively larger, but of same form and root-structure; 

 enamel pattern of m'' (and probably of all the other maxillary teeth) 

 consisting" of two narrow reentrant folds from each side, the extremi- 

 ties of all the folds reaching about to median line of crown. 



^ For the opportunity to examine the skull of Heteropsoniys and for per- 

 mission to publish the photographs, I am indebted. to Dr. J. A. Allen and Mr. 

 H. E. Anthony, of the American JNIuseum of Natural History. 



