8 DIDELPHYS. 



17-22. Adult cf Coll. Reforma, State of Oaxaca, Mexico. Hel- 

 ler & Barber. 

 23. Adult 9 Coll. Reforma, State of Oaxaca, Mexico. Hel- 

 ler & Barber. 



24-25. Adult 9 Coll. Noble, Oklahoma Territory. T. Surber 



26. Adult 6^ Coll. Geronimo, State of Oaxaca, Mexico. Hel- 

 ler & Barber. 



27. Adult ? P. Mazatlan, State of Jalisco, Mexico. A. Forrer, 



28. Adult cJ* Coll. Achotal, State of Vera Cruz, Mexico. Hel- 



ler & Barber. 

 2q. Adult 9 Coll. Achotal, State of Vera Cruz, Mexico. Hel- 

 ler & Barber. 



a. Didelphys mesainriirini(i iahiiaci'ns'is (Allen). 



Didelphis! marsupialis tabascensis Allen, Bull. Am. Mus. Nat. 



Hist. N. Y., 1901, p. 173. 

 Didelphys niesamericayia tabascensis Elliot, Mamm. Middle Amer. & 

 W. Indies, F. C. M. Pub., iv, Pt. i, 1904, p. 16. Zool. Ser. 

 Id. Check-L. Mamm. N. Amer. Cont. & W. Indies, F. C. M. 

 Pub., VI, 1905, p. 6. Zool. Ser. 

 Tabasco Opossum. 



1-3. Adult d^ Black phase. Coll. Achotal, State of Vera Cruz, 



Mexico. Heller & Barber. 

 4-5. Adult 9 Gray phase. Coll. Achotal, State of Vera Cruz, 

 Mexico. Heller & Barber. 



6. Adult d^ Gray phase. Coll. San Carlos, State of Vera Cruz, 



Mexico. N. G. Buxton. 



7. Adult d* Black phase. Coll. Xico. State of Vera Cruz, 



Mexico. N G. Buxton. 



12. Didelphys virginiana Kerr. 



Didelphis! virginiana Kerr, Anim. Kingd., 1792, p. 193. Shaw, 



Gen. Zool. i, Pt. 2, 1800, p. 473. 

 Didelphis! virginiana pigra Bangs, Proc. Bost. Soc. Nat. Hist., 



1898, p. 172. 

 Didelphys virginiana Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 



II, 1 90 1, p. I, fig. I. Zool. Ser. Id. Pub. Field Columb. Mus., 



III, 1901, p. 32. Zool. Ser. Id. Check-L. Mamm. N. Amer. 

 Cont. & W. Indies. F. C. M. Pub., vi, 1905, p. 7. Zool. Ser. 



Didelphys virginiana pigra Elliot, Syn. N. Am. Mamm., F. C. M. 

 Pub., II, 1901, p. I. Zool. Ser. 

 Virginian Opossum. 



1-8. Adult & juv. — P. Illinois. Ward's Nat. Scien. Establ., 

 Rochester, N. Y. 



