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280 MONOORAniS OF NORTH AMERICAN RODENTIA, 



1897>— Eai^'d, Mnni. N. Amcr., 572-C17. I, glacialit, = L. (Imidua vnr. arcllcm ; L. amnicanut ; L. 

 IVaHhinftloiii, -^ L. amrricnnus var. tVaahingtoni ; t. vamjHHtris ; L, taJtotis ,' L. valifomicm ; 

 t. Hi/lvalwiia, i-^ L. ni/lraticui var. tylralioui ; L. arleniria and L. ISaihrnatil, =^ L. sylcalicut vnr. 

 liuUaUi; L. Judubooi (here flrst deBcribod), = L, fylealicHa var. Jiidntoni; L, Trowhridgei ; 

 L, aqualicttt; L, imlutlria. Tbirtcon opecies nre bore recognized, which in this mnnogrnph 

 are regarded as representing eight valid species and four valid varieties, one name only 

 (£. Jlachmani) being here reduced to n synonym. L. ftaviguturii Wnguor and L. texianm 

 WaterliouBO are doubtfully referred to L. callolii ; L. teiianiu Audubon und Baobmau is 

 regarded as a species probably distinct from the L. texinnm Waterbouso, but is mentioned 

 as a species which his materials did not allow him " to discuss or describe ". L. NHtlalU is 

 diiubtfuUy referred to L. artnuiiia. He states that he strongly suspects the siieoimen on 

 which L. SMalli was based to bo an immature example of L. artemhla, and points out thn 

 fact that, in case it proves to be so, the name Xutlalli must take precedence over nrlemMa. 

 The L. cunIcn/oii'ms of Lichtenstein (Waterhoaso), based on Mexican specimens, he properly 

 suggests way prove to be L, aquatlout, as is undoubtedly the cose. No mention is made of 

 the L. longicaiidat¥ii of former anthers, which Watcrbonse bad previously shown was African, 

 and not referable to any American species. The synonymy of the suliject is Judiciously and 

 exhaustively treated, and in no case do any of the collocations seem to require changing. 

 Kurtbermore,. in this monographic essay, the species are for the first time subgenerically 

 divided ; no names are, huwover, afllxed to his very natural subdivisions, which are very prop- 

 erly treated as merely sections rather than as groups of a technically subgenerio value, Baird'a 

 tn-atmcnt of the subject forms as great an advance over onr previous knowledge of the 

 group as did Itachuian's articles twenty years before, and murks a second grand e|H>ch in the 

 literature of the North American Lrporidce. Finally, Gaird's work thus far greatly surpasses 

 in accuracy and thoronghness any treatment of the Leporidw of any part of the world. 



1837.— Newberry and Baird, Zool. of Lieut. Williamson's Rep. upon Expl. for a U. E. Route from the 

 SnoranioMto Valley to the Columbia River (Paoilio K. R. Expl. ond Surveys, etc., vi, pt. iv, 

 no. 'i, pp. ()3-(J6). Field-notes by Dr. Newberry ; identifications by Professor liaird ; 

 synonymy and diagnoses from Daird's Oen. Rep. Mam. N. Amer. The species mentioned aru 

 L. campetlrit, L. cali/onicus, L, "artemiria", L. "Anduboni", and L. Troicbridgei. 



18S9.— Baird, Zoiil. U. S. and Mex. Hound. Survey, 45-48. L. eatlolii (described in detail), and L. 

 californiciit, L. njhaiicut, L. artemiiia, and L. liachmani (the two latter ^=: L, lylcaticua var. 

 yiittalli) mentioned by nnmo merely, with field-notes by the collectors. 



1 830.— Kennerly, Zoiil. of Lieut. Whipi)le's Route, near the 3r>th Parallel (Pacific E. R. Expl. and 

 Surveys, etc., x, pt. vi, no. 2, 16, 17). Field-notes by Dr. Kennerly, with diagnoses extracted 

 from Professor Uaird's Oen. Rep. Mam. N. Anier. The following species are meutiouud : — 

 L, callolit, L. "artemisia", L. " Atiduboni", and L, Trowbridgfi, 



1860.— Cooper, Zoiil. of Gov. Stevens's Route near the 47tb and 4'Jlb Parallels (Pacific R. R. Ro|)8. 

 xii, pt. iii, no. 2, 87). Field-notes and measurements by Dr. Cooper, with diagnoses of the 

 B|)ecics from Baird's Oen. Rep. Mam. N. Amer. The species mentioned nre L. " n'oahingtoni ", 

 and L. Troicbridgei. 



I860.— Suckley, Ibid., pp. I0;i-105. Fieldnotes by Dr. Suckley and diagnoses from Baird's Gen. Rep. 

 Mam. N. Amer. The species enumerated are L, " IfMhingloni", L. campetlri», L. Qalifnrniem, 

 "t L. callolii" (= L. callolii), and //. "artemitia". 



I860.— Suckley and Oibbs, Ibid., pp. 130-133. Chiefly Hold-notes on L. " Waihinglmi", L. campcttrii, 

 "t L. callolit " (= L. calloiit), L. californicui, and L. artemisia. 



1861.— Maximilian, Wiegni. Arch., IBUl, i, 143-145. Habits and distribution of L. ttmericaniu, L. ij/l- 

 raliciit, and //. eampettriii. 



1861.— Ross, Cauad. Nat. and Oeul., vi, 436. Notice of L. americanvt. 



1869.— Hayden, Tranit. Amer. Fbilos. 8oc. Pbila., xii,14d. Notes ou £. campatrw, X. tylvaticm, and 

 L. " arlemiiia ". 



186T.— Coues, Am<;r. Nat., i, 531-535; Proc. Acad. Nat. Sci. Phila., 36. Habits and distribution of L. 

 callolie and L. "arleminia" in Arizona. 



186T.— Oray, Ann. aud Mag. Nat. Hist., 3d ser., xx, 331-285. Divides the genns Leptiit into seven so- 

 called genera, raising several of Uaird's sections (sec Mam. N. Amer., &74, 575) to generin 

 rank. His seven genera nre (1) Ilgdrolagiis (= Uaird's section F), (2) SylvilagHf (= Baird's 

 section D), (3) Eulagot, (4) Lepun {— Baird's sections A and E), (5) Tapeli, (6) t'unioulKS 

 > (= Uaird's section C), ond(7) CajjroIoi/iM. The American species recognized arc as follows : — 

 (1) Uydrulagnt a^ualiem (= L. aiiuiUioun), to wbicb he properly refers his L. Duuglaui vur. I ; 



