lvon] the hares and their allies 3-9 



revived Gray's names and Blyth's Caprolagus and gave one new name, 

 Nesolagus. 



Trouessart (Catalogus Mammalium, i, fasc. iii, 1897, pp. 649-664) gives 

 two genera of the Leporidae, Romerlagus and Lepus. Lepiis contains the fol- 

 lowing subgenera: Lepus, Hydrolagus, Sylvilagus, Microlagus, Macrotolagus, 

 Tapcti, Oryctolagus, and Caprolagus. All of these except Lepus are discussed 

 elsewhere. 



Under Lepus as a subgenus Trouessart includes the following species : 

 timidus Linn^us, europccus Pallas, mediterraneus Wagner, tolai Pallas, 

 mandschuricus Radde, yarkandensis Gunther, oiostolus Hodgson, pallipes 

 Hodgson, dayanus Blanford, nigricollis, F. Cuvier, ruiicaudatus Is. Geoffroy, 

 peguensis Blyth, sinensis Gray, hypsibius Blanford, szvinhoei Thomas, 

 hainanus Swinhoe, brachyurus Temminck, omanensis Thomas, arabicus 

 Hemprich and Ehreneerg, judece Gray, sinaiticiis Hemprich and Ehrenberg, 

 agyptius Audouin and Geoffroy, somalensis Heuglin, berberanus Heuglin, 

 tigrensis Blanford, microtis Heuglin, capensis Linn^us, ivhytei Thomas, 

 victorice Thomas, crassicaudatus Is. Geoffroy, saxatilis F. Cuvier, sals 

 Jentink, arcticus Leach, grcenlandiciis Rhoads, tscJiuktschorum Nordquist, 

 americanus Erxleben, campestris Bachman. 



Of these, crassicaudatus is regarded as the type of a new genus Proiiolagus 

 in the present paper. Many of the others I have not examined, nor seen 

 figures of them, but those of which specimens and figures are available un- 

 doubtedly belong to the genus Lepus as defined further on. 



Major (Trans. Linn. Soc. London, 2d sen, vii, Zool., p. 541, November, 

 1899) uses Lepus as a genus for evidently the same species that Trouessart 

 includes in his subgenera Lepus and Macrotolagus. 



Miller and Rehn (Proc. Boston Soc. Nat. Hist., xxx, pp. 177-180, December 

 27, 1901) have included under the subgenus Lepus, the following: americanus 

 Erxleben, americanus bairdii Hayden, americanus columbiensis Rhoads, 

 americanus dalli Merriam, americanus macfarlani Merriam, americanus 

 phcconotus Allen, americanus struthopus Bangs, americanus virginianus 

 Harlan, arcticus Ross, arcticus bangsii Rhoads, bishopi Allen, campestris 

 Bachman, gra:nlandicus Rhoads, klamathensis Merriam, labradorius ]\Iiller, 

 othus Merriam, poadromns Merriam, zvasliingtonii Baird. 



In the present paper the genus Lepus corresponds in general with Troues- 

 sart's and Miller and Rehn's subgenera Lepus and Macrotolagus. I regard it 

 as composed of a number of species whose relationships cannot be determined 

 at the present time, and at least three distinct subgenera, (a) Lepus, includ- 

 ing arcticus, arcticus bangsii, campestris, groenlandicus, labradorius, othus, and 

 poadronius of Miller and Rehn's list, together with europccus, timidus, and 

 related forms of the Old World; (&) Poccilolagus, containing americanus 

 and its subspecies, together with bisJwpi, klamathensis, and zvashingtonii; and 

 (c) Macrotolagus, with the species included under that name by Trouessart 

 and by Miller and Rehn. 



LIMNOLAGUS 



Proposed by Mearns (Science, n. s., v, March 5, 1897, p. 393) to replace 

 Hydrolagus Gray (Ann. Mag. Nat. Hist., xx, 3d sen, 1867, p. 221) preoccu- 

 pied in ichthyology by Hydrolagus Gill (Proc. Acad. Nat. Sci. Philadelphia, 

 1862, p. 331). Type designated as Lepus aquaticus Bachman. 



