COLLIER : NOTES ON THE SECTION TACHEA OF HELIX. 1 23 



H. (Tachea) coquandi Morelet. — 



This and the next species seem to connect Tachea with the Macu- 

 lar la group. 



It is only found in Morocco and Southern Spain. It is a more 

 depressed shell than the preceding species, and is generally, though 

 not always, found without bands, and of a brown or rosy colour. 



H. (Tachea) splendida Drap. — 



The peristome and aperture are sometimes rose tinted witliin. A 

 lovely species, connected with the smaller Macidarlce, and as far as 

 shell characters go, intermediate between the two groups. 



Locality : Spain and Southern France. 



It is a more depressed shell than any other of the section and it is 

 also the smallest. 



H. (Tachea) aimophila Bourg. — 



Locality : x'Vsia Minor. 



Unfortunately, I have never seen this species. It seems to be a 

 thick, heavy, chalky-white shell, something like H. desertorum^ but 

 more globose, and adapted for life in a hot, sunny district. 



Kobelt has this species amongst the Tacheas with a ? in front of it, 

 and the locality Abruzzi, so that there is evidently some doubt about 

 this species. 



H. (Tachea) vicaria AVesterlund. — 



This species was described by Westerlund in 1894, but I have not 

 seen a description, though I understand it is something like our 

 H. horfejisls, and is found in Greece and Turkey-in-Europe. 



Shells from the Rhone Delta. — In April, 1912, I had the opportunity of 

 visiting the Salin of Geiaud in the Delta of the Rhone. One evening, walking 

 along the main river, I noticed a small pocket of rejectamenta, and picked up two 

 handfuls, and on reaching home this material was sorted out and found to contain 

 thirty-two species of shells, all common to the Rhone Valley, but some strangers 

 to Comargue. The following shells were obtained: — Viirea alliaria (MiilL), 

 Eucomdus fnlvus (MiilL), Helicella virgata (Mont.), H. barbara {1^.), H. ventri- 

 cosa (Di-ap.), H. pyraniidata (Drap.), Vallonia pulcliella (Mtill.), V. costaia 

 (Mull)., Helix pisana (Mull.), H. verniiciilata (Mtill.), Carychiuiii )iiinimiim 

 (Mull.), Cochlicopa lubrica (Drap.), CLEcilioides acictila (Mtill.), Cyclostonia elegans 

 (Drap.), Clausilia parvida (Stud.), Biilimimis qtiadridens (Drap)., Pupa doliolitm 

 (Drap.), P. pyreiiiEai-ia (Mich.), P. avenacea (Brug. ), P. secale (Drap.), P. cyliii- 

 dracea (DaC), P. ringens (Mich. J, P. musconini (L.), Vertigo pitsilla (Mtill.), 

 V. pygmxa (Drap.), V. iitiniitissiina (}^a.i\.m)., Succinea obloiiga {T)xa^.), Valvata 

 cristata (Miill.), Bythinia teniaciclata (L. ), Planorbis spirorbis (L. ), P. coin- 

 planatus (Drap.), Liinnma pereger (MiilL), and L. tfumatula (MiilL). — B. R. 

 Lucas {Read before the Society, October 13th, 1912). 



