132 



A(!RTOLTi\rAX L.TIVIS PAnrPEPTRIS 



Agriolimax leevis campestris Eiimey, Vmr. Boston Soc. Xat. Hist., 

 1S41, p. :>•„'. 



/.;,„a.v monlamis Ingersoll, Bull, U.S. Ceol. Suri . Terr,, IST.i, p :!'.lt. 

 Liiiicix castaiicus Incersoll, op. cit. 



J.!nm.r im;crsom W."G, liinney, Proc. Acad, Nat, Sci, i>hil,-id-, LST.'i, 

 Umax hytirhorcns W'csicrlun.l, N.-u:lisl.l, rl, HuuLscli. Mai, Gcs,, 1,X7G, p. 97. 



Witli this geographical race, tlie late ]\lr. Amos Biuney, the eminent 

 American conchologist, is associated, not only as lieing the author of the 

 name a.ilopted for tlie race, but in acknowledgmerjt (jf the great services 

 lie rendered to the advancement of our stud}'. 



ANm.\l> usually nf some shade of amber, but 

 occasionally of a blackish hue ; without spots or 

 uiarkings ; ttk.vo ami i}.mm.\topiiore,s smoky ; 

 FOOT Harrow ami "whitish. 



Intep.NALLV, a. cfiiiijirstris is, accoriliug to 

 Hiiuiey, characterized liy the jaw possessing re- 

 curved and pointed ends, a sharp MEDIAN BEAK, 

 and the centre 



i — \/ 



^, 



iWJ-i 



Fir-,. 14.5. — iVreillan, lateral, anri 

 inar.L;inal teeth of A. cnmf'L'stris, 

 highly niagnified latter Binneyl, 



sliowin.u a strong;' 

 transveise line of 

 reinforcement. 

 Tlie icMU'B.v var- 

 ies in its formula, 

 40 -t 1 H 40 with 

 ciuhteeu perfect 

 laterals i i e i n ;;■ 



that of one adult speeimen examined. The 

 laterals do not show, as in A. riijrcs/ix, an inner-side 

 iMittiiig jioint, but alxmt half the mari^inals are 

 bilid, the liifurral ion of the outer marginals lieing 

 very obscure. 



The t'entral and South American forms, de- 

 scribed as Lima.'- .•.■tijiiini.':, L. Din-idioiin/i.^, L. 

 hriisilii iisis, and ].. imiiiitiiiiis, of which no 

 aulhentic descriptions have been available, are in 

 all probability mtU'C cori-cclly referred to 

 this simpler and more |iriiiiitive form than 

 to the typical A. hrris, as thon^h doubtless 

 exhibiting further minor moditications, tend- 

 ing to a nearer approximation with a still 

 more ancient fmni, yet the intermediate 

 position between the North Ami'iican L. 

 i-ii III first fix and the South ,\nieiican forms, 

 saiil to be held by the Mexican /,. s/nninis, 

 tends to con Hrm the \ lew that the most prinii- 

 ti\c forms inhabit the more remote rei;ion>. 

 Till' A. ijiirriis/iim/iciis, A . Iicrriic/i, etc., 

 are also prolialdy more closely allied to this sim]iler form rather than to the more 

 acham-cd Kuro]ii'an race, in wliiidi the development of the penial retractor aiuf the 

 distinctly hammer-lipaded iieiiis-shi-ath seems to be more especially a characteristic, 

 and may he .assmned to be I he hit^hest sta^je of dc\clopment the sjiecies has attained. 

 The sini|iler and more primitive forms now iiihabitin;;- the New World, the incle- 

 ment icL'ioiis of Sibeiia, etc., possess, acconliiiL; to Siiiirolh, a short stiinnlating 

 oiuaii and an elongate rather than a liamnier-slia|ied ]ienis, sheath, resemblinj;- the 

 iiiiiiialnre form linaired by him. It \vonld lliiis seem that in Europe A. /icr/.v is 

 soniewhat variable in the develo)iment of its genitalia, and thai tiic nncommon 

 or imiiiahiie form in Europe is the pre\ali'nt one in the New World, 



Fig. 1JI(».— Median, lateral, 

 and marginal teeth o( Liiiia.v 

 /•ram/ttiis/s, X 200 ( after 

 Ihering). 



Fir;. 117. — ReproJiietive 

 >"M-gans of /. iiiiaA' t'rasiiiinsi.s 

 (after llicringl. 



Quebec -Limn. 



Hjl 



nh- 



spe. May l,S!|o (,\. W. I Liiiham, Nautilus, Oct. 



tSilli, p. (i.'i). Rather local about (,lneliec (id., Nanlilns, .Ian. KS1I7). 



Ontario— L. i-niiijiixti-is, near .Midvay's Hay, New Edinhnigh ; and common .about 

 (lltaua ill moist places e\ ciyw here excepl on samh' soil (I''. 1!. l.iitidiforil. Trans. 

 (llta«a hield Nal. Clnh, I.S.Sli). 



Manitoba — A. rdiiipi-.shis, occasioiialh at- Winniiicg (.\. W. llaidiam, Natitilus, 

 May IStlil, p. ;!). 



