1861.] OF GUATEMALAN MAMMALS. 281 



12. Dasyprocta AGUTi, Linn. 



13. Lepus palustris. 



Lepns palustris, Baclira. J. A. N. Sci. Philad. vii. 1837, pp. 194 & 

 336; Waterh. Nat. Hist. ii. p. 119. 



Lepus douglasii. Gray, Mag. Nat. Hist. 1837, p, 586. 



14. SCIURUS LUDOVICIANUS. 



Sciurus ludovicianus, Custis,|Barton'sMecl. et Phys. Journ.ii. 1806. 



Sciurus magnicaudatus, Harlan, Faun. Amer. 1825, p. 178. 



S. rufiventer, Desm. Mamm. p. 132, 1822. 



S. macroura. Say, Long, Exped.i. p. 115, 1823. 



S. subauratus, Bachm. P. Z. S. 1838, p. 274. 



15. Sciurus carolinensis. 



The specimens contained in ]\Ir. Salvin's collection differ from 

 the ordinary specimens of S. carolinensis in being smaller and much 

 more strongly tinged with brown or rufous. There are not sufficient 

 grounds, however, for regarding them as distinct from that species, 

 the differences being such as we might expect to meet with. 



16. Sciurus ? 



17. Sciurus ? 



I am at present wholly unable to determine these two species with 

 certainty, and prefer therefore rather to leave them unnamed than 

 tojun the risk of adding to the confusion of nomenclature which is 

 already so great amongst the American Sciuridce. 



18. Pteromys volucella. 



Only one specimen appears, from which unfortunately the skull 

 has been renioved. It holds precisely the same relation in colour to 

 North American specimens as that which I have noticed in the case 

 of the Guatemalan examples of Sciurus carolinensis. It is everywhere 

 much more strongly tinged with rufous, and has the fur a little 

 coarser. In size it resembles examples from the United States. 



19. SiGMODON BERLANDIERI, Baird, 



The present species differs merely from the well-known 5. hispidum 

 in being a little larger, and rather paler in colour. It is very doubt- 

 fully distinct from the latter species. From the number of speci- 

 mens collected by Mr. Salvin and Mr. Fraser in Guatemala, and by 

 M. Salle in Mexico, it would appear that the Sigmodon is very 

 abundant in Central America. 



20. MUS MUSCULUS. 



Two specimens only of this species have come to hand ; and these 

 would scarcely deserve comment, excepting that, although obviously 

 adult, they are of smaller size than European specimens. Others 

 collected by Mr. Fraser at Pallatanga resemble \n this respect those 

 from Guatemala. * 



