52 LAURIA. 



Azores: Fayal, S. Miguel. St. Helena. Jamaica. Also found 

 in England, France, Italy, Mamudly, Transcaucasia, etc. 



Helix anconostoma Lowe, Cambr. Philos. Soc. Trans., iv, 

 1831, p. 62, pi. 6, f. 301. — Pupa anconostoma Lowe, Pfr., 

 Monogr., ii, 314 ; iii, 542 ; iv, 668 ; vi, 308. — Pupa umbilicata 

 var. anconostoma Lwe., Wollaston, Testae. Atlant., pp. 211, 

 450. — Pupilla anconostoma Mabille, Nouv. Archives du Mus., 

 (2), viii, 1885, p. 157. — Pupa grevillei Chitty, Contrib. to 

 Conchology no. 1, 1853, p. 17 (Newton, St. Andrews Mts., 

 Jamaica). — Pfr., Monogr., iv, 666. — Pupa nilssoni Wallen- 

 gren, Antekn. i Zoologien, 1856, p. 86, according to Wester- 

 lund. — Pupa helenensis Pfr., Malak. Bl., iii, 1856, p. 207 ; 

 Monographia, iv, 665 (St. Helena). Cf. Smith, P. Z. S., 1892, 

 p. 259. 



The relation of this form to cylindracea is not clear to me. 

 The two are found together in some museum lots from Europe ; 

 whether they are associated in life, I do not know. A short 

 form of cylindracea, generally called curia "West., differs from 

 short anconostoma by the more developed callous pad in the 

 angle of the aperture. 



Lowe noted two varieties. " (a), gyrata: shell lengthened, 

 elbow of the aperture [angulation of the outer lip above] 

 very distinct; length 1%, diam. 1 line, 7 whorls." This may 

 be regarded as typical anconostoma. " (6), curt a: shell short- 

 ened ; elbow of the aperture more obsolete ; length 1*4, diam. 

 % line, 6 whorls." These are represented by figures 10, 4.3 

 mm. long, and 11, 3 mm., respectively. In several lots exam- 

 ined both short, and long examples are present, in others only 

 long and intermediate. 



It is very abundant in Madeira, where the typical cylin- 

 dracea has been found only in the Jardim da Serra. Both 

 are regarded by Wollaston as introduced from the mainland. 

 I can find no differences between shells of Madeira, Teneriffe, 

 Hierro, Fayal and S. Miguel. A specimen from St, Helena 

 (P. helenensis) is of the short form, curta Lowe. 



Two sets of P. grevillei from Jamaica in coll. A. N. S., and 

 a lot of 4 in U. S. N. M. (no. 331779), received from Chitty, 

 are typical anconostoma, 3.5 to 3.7 mm. long. Whether it is 

 colonized in Jamaica, or introduced into Chitty 's collection by 



