I r, i LIGUUS. 



f. A-G (teeth); pi. 4, f. G (genitalia). BLAND, t. c., p. 198. von 

 MARTENS, .laln-h. 1. I). .Malak. <;<. iv, 1877, p. 302-307. Ci;>--r 

 ^ FisrtiKi;, Mi--. Sclent. Mex., Moll., ].. 4:>0. HINNMCY, Ann. New 

 York Acad. Sci. iii, p. 12','. pi. 1:2, C. A (dentition) CR<SK, .lour- 

 nal ill- duicliyl. xxxix. 1891, pp. 129, 204 (with var. si/tisfnilis 

 Malt/an. Ms.). Ar/infi/m i-iri/lnca varieties 2, 3, 4, S\\ AINM.N, Xoiil. 

 Illnstr. iii, ]>1. 1:2:2, 123(1822). Acltntiixt (L/</in/x) rir</in><<i MAI;- 

 TKNS in Alb., Die Ilrl., l8Gii, p. 207 Pseudolrochus n'rijim-ns II. >x 

 A. AMAMS, (.Jen. Ivec. Moll, ii, p. 13.}, pi. 73, f. *a. 



Achatina vexillum Humph., DK.KAV, Zoiil. of New York, pu v, 

 Moll., p. ."it;, pi. 4, f. .")('.. 



Aclxiiiiin fiiKirijiiKitd S\VAI.\M>N. Xoi'il. Illnstr. ii, pi. 84, upper ami 

 lower liirures ( 1*:21 i. 1'ri:., Monogr. ii, p. 2- r ><>. llotin rinjineu and 

 pnelliiris liiti.i., te-le 1'fr. CJifrshut riftata IlfM IMI i;r:v, Mus. 

 Calonnianum, p. 02 (1797). 



Pr<'-Liinit'"ii illustrations: Lister, Ilistoria C'cnch., pi. l~>, i'. 1 (| . 

 Buonanni, f. G(J ; Argentville, pi. 0")^ t'. G 1, G 3, G 4, G .">. Klein, 

 pi. 7, f. 110 (copied from Lister). Petiver Gazophylacii, ])1. 2'J, t. 



II (cnpied from Lister). Gnaltieri, pi. 0, f. A. Si-lia, Tlie-aiirus 

 iii, pi. 40, f. 38. Schroier, Geschiehte der Flussconchylien, p. 337, 

 pi. 8, f. 3, 1. 



L. riri/itif it* ilitlcT> from L. j'<ixc!<ihis in the shorter colnniella. 

 -iroiiuly concave nliove and more ahrnjitly truncated lielo\v. and in 

 tieini: more trochiform. The rolumella is strongly sinuous within the 

 \\\-\ \\hoi-l. mid there is i'reipiently a short callous ridge well within 

 the aperture on the lia-al wall. The positions of the four Idackish 

 hands, when they are pre-eiit, is always the same, and the dark ^i-een 

 (or purple) super-peripheral hand, ending in a slight notch in the lip, 

 is also fixed in position when present. The green hand i> pundv 

 euticiilar. and when rnhhed oil, a purple one is seen in the siilistam-e 

 n|' the shell henealli it. The niimher of hand combinations, if one 

 descends tu minuti;e and transition forms, is considerable ; hut the 



chief pa! lei n- are noticed helou . The variation in width of the shell 

 i- largely independent of color-pattern. 



I. \Yilh a super-peripheral green hand terminating in a notch at 



the lip-edge. 



In. ( )ne green hand and -nine faint yellow ones; aperture 

 white within (lig>. .~>s, .V.I). This is Achatina 

 Hutu of Swaiiismi. It occni's at .lacmel. 



