340 HENRY CLIFDEN BURN UP. 



This striking species, thougli relatively scarcely higher than 

 bilaraellaris and trilamellaris, has the spire slightly 

 more raised, the body-whorl being somewhat shallower. In 

 the umbilical region it is very like bilamellaris, but the 

 number and arrano-ement of the in-runnino; folds are abun- 

 dantly distinct. I have much pleasure in associating with 

 this shell the name of its discoverer, Mr. J. Farquhar, who 

 has supplied me with so much material for this paper. 



Judging by Pilsbry's figure of Endodonta [En do don ta 

 (Thaumatodon)] derbesiana {Crosse}) in 'Man. Conch./ 

 2nd ser., " Pulmonata," vol. ix, pi. iv, figs. 33, 34, a species 

 inhabiting New Caledonia, this species (farquhari) bears a 

 strong superficial likeness to Cressets. The lamellae are 

 similar in form and position, but the latter species has an 

 additional small plait between the three on the outer wall and 

 that on the columella. The sculpture of the New Caledonian 

 shell is very much coarser than that of farquhari. I have 

 in my collection shells, received from correspondents in widely 

 separated countries, agreeing inter se and labelled " Thau- 

 matodon derbesiana Crosse, New Caledonia," but they 

 do not agree with Crosse's description or with Pilsbry's figure 

 of that species. I can therefore only infer that they have 

 been wrongly identified, and I consider that they represent 

 Gude's species, E. (Thaumatodon) quadridens,- with 

 whose description and figures they agree very well. This 

 species, compared with E. (Afrodonta) farquhari, is easily 

 separated by the upright direction, parallel to the peristome, 

 of the second process within the outer wall and by its much 

 coarser sculpture. 



The six lamella3 of farquhari naturally suggest a com- 

 parison with E. (Thaumatodon) sexlamellata (Pfr.),^ 

 but that species, being much larger and widely different in 

 detail, need not be considered. 



• Helix derbesiana Crosse, 'Jouru. de Conch., 'vol. xxiii(l875),p. 143. 

 ^ Gude, ' Journ. Malac.,' vol. xii (1905), p. 13, pi. iv, figs. 9 a-d. 

 3 Helix sexlamellata Pfr. in ' Zeitechr. f. Mai.' (1845), p. 85. 



