102 HELJX-LUCERNA. 



and of most authors. H. heteroclites LAM. An. s. Vert. p. 74. H. 

 aeuta var. /?. PFR. Monogr. i, p. 313. 



This form is really the typical H. acuta of Lamarck, which is 

 thus seen to be absolutely synonymous with H. acutissima of the 

 same author. It is the var. 0. of Pfeiffer. Pfeiffer has in the face 

 of these facts, restricted acuta to the smaller, bluntly-carinated 

 variety, and given to the shell figured in the Encyclopedic the 

 varietal name acutissima or var. /?. I question the propriety of 

 restricting typical acuta to a form Lamarck probably never saw and 

 certainly did not figure or describe. If we use the name acutissima 

 at all, it must replace acuta in toto. 



Var. LAMARCKII Per. PI. 26, figs. 58, 65. 



Generally smaller than the type ; periphery rounded or bluntly 

 angled ; teeth of the basal lip two, generally strong, rather near 

 together, compressed, acute, spire more or less elevated. 



Alt. 18, diam. 35 ; alt. 33, diam. 63 mill. 



H. acuta PFR., in Conchyl. Cab. p. 357, t. 63, f. 13, 14 ; H. acuta 

 g and d PFR., Monograph!*. H. lamarckii FER. Prodr. 129, Hist. t. 

 57, f. 1. 



Var. SUBLUCERNA Pilsbry. PI. 30, fig. 52. 



This is a form about the size and shape of H. lucerna, whitish 

 below, light brown above, lip edged with brown ; basal teeth two, 

 small, acute ; periphery angular or rounded ; sometimes perforate. 



Alt. 16-17, diam. 33 mill. 



This form was figured by Pfeiffer (Conchylien Cabinet, Helix, t. 

 62, f. 15) as a form of H. lucerna. After examining numerous 

 specimens I am satisfied that it belongs to H. acuta. It is not nearly 

 so deeply scrobiculate behind the peristome as H. lucerna. 



Var. PATINA C. B. Ad. PI. 26, figs. 66 ; pi. 33, figs. 3-5. 



Conical or depressed ; always carinated ; lip white or flesh-colored, 

 basal margin bearing a single tooth, rather small, tubercular, not 

 compressed ; surface granulate all over ; base generally lighter colored 

 than upper surface. Alt. 20-25, diam. 51-55 mill. 



H. patina C. B. AD. Contr. to Conch, no. 2, p. 29. REEVE, Conch. 

 Icon. f. 218. PFR. Monogr. iii, p. 215 ; Conch. Cab. p. 300, t. 126, 

 f. 3, 4. 



There is a less-depressed form named by A. D. Brown (in coll.) 

 H. goniasmos. Mr. Brown's type is represented on pi. 26, fig. 60. 



