SYSTEMATIC WORK. 
Mamm. 33 
Lipodomys phillipsi , its re discovery ; Merriam, P. Biol. Soc. Washington, 
viii, pp. 83-96. The genus and species defined, and Macrocolus 
halticus identified therewith. 
g . Dipodid^e. 
Zapus insignis , recorded by Miller, P. Biol. Soc. Washington, viii, p. J, 
from United States. 
Zapus princeps, n. sp., J. A. Allen, Bull. Amer. Mus. v, p. 71, Colorado. 
Sminthus leathami , n. sp., Thomas, Ann. Nat. Hist. (0) xi, p. 184, Maru- 
Wardwan, Kashmir. 
k. OcTODONTlDAC. 
Loncheres castaneus , n. sp., J. A. Allen, Bull. Amer. Mus. v, p. 222, 
Trinidad. 
Echimys trinitatis , n. sp., Allen, t. c. p. 223, Trinidad. 
i. Hystricidji. 
Hystrix gcileata , n. sp., Thomas, Ann. Nat. Hist. (6) xi, p. 230, Lamu, 
E. Africa. 
j. ICastoroididje. 
See Moore, supra, p. 15. 
k. Caviidj;. 
Cavia aperea : the fertile crossing of this species with C. cobaya recorded 
by Neiiring, SB. Ges. naturf. Berlin, 1893, p. 249. For structure 
of male genital organ, see Pousargues, supra, , p. 18. 
1. LEPORIDA5. 
Lepus orizabce, n. sp., Merriam, P. Biol. Soc. Washington, viii, p. 143, 
S. Mexico. 
Lepus victories , n. sp., Thomas, Ann. Nat. Hist. (6) xii, p. 268, Yictoria 
Nyanza. 
Lepus europccus, St. Loup, C.R. Ac. Sci. cxvii, p. 640, considers that there 
is a complete gradation from the skull of this species to that of 
L . cuniculus. 
m. Laqomyidac. 
Lagomys collaris, n. sp., Nelson, P. Biol. Soc. Washington, viii, p. 117, 
Alaska. 
1893. [VOL. XXX.] 
c 3 
