HELIX §. 23. 115 



superne plicata, pallide cornea, rufo maculata; spira parum 

 elevata; sutura impressa; anfr. 7 angustissimi, convexiusculi, 

 ultinms non descendens , superne carinatus, basi convexus, 

 sublaevigatus; apertura obliqua, lunato-rotundata ; perist. sim- 

 plex, rectum, marginibus conniventibus, columellari non re- 

 flexo. — Diam. maj. 67^, min. fere 6, alt. Sy^ mill. (Mus. 

 Cuming. ) 



Helix semiplicata Pfr. in Zeitschr. f. Malak. 1852. p. 6 3. 



— — Cheimi. ed. n. Helix N. 1083. t. 159. f. 2 4 — 26. 



— Gueriniana (Euromphala) Zoic^^e Diagn. Not. p. 115. N. 17. 

 Habitat in insula Madera. 



537. H. retexta Shuttleworth. 



T. perspective umbilicata, depressa, arctispira, rufescens, 

 pallide maculata, superne subtiliter costulata; spira convexa; 

 anfr. 6 convexiusculi, ultimus angulatus, subtus laevis, nitidus; 

 sutura albido-marginata; apertura obliqua, subcircularis, non 

 descendens; perist. rectum, simplex, acutum. — Diam. maj. 

 7, min. 6, alt. ^V^ mill. (Coll. Nr. SS^V^.) 



Helix retexta SJnittl. Diagn. n. Moll. N. 1. p. 5. 

 Habitat in insula Palma, Canariensi (Blauner). 



Obs. kH. engonatae valde afrinis, anfr. ultimo laeviusculo, nitido, 

 absque anguli circa umbilicum vestigio, et sutura marginata distincta. 

 H. Guerini Loiue , ex Madera, etiam affinis, sed sculptura, latitudine et 

 forsan anfr. numero differt. » 



538. H. clathratula Pfr. 



T. late umbilicata, lenticularis, acute carinata, superne 

 liris elevatis (in quovis anfractu 2) et costis distinctis clathrata, 

 parum nitens, cornea; spira parum elevata, vertice obtusius- 

 culo; anfr. 5 subaequales, vix convexiusculi, ultimus basi ra- 

 diato-striatus, circa umbilicum subinflatus; apertura verticalis, 

 ann;usta. angulato-Iunaris; perist. simplex, rectum, acutum. — 

 Diam. maj. 5^2, min. 5, alt. 2% mill. (Coll. Nr. 233.) 

 Helix dathratula Pfr. in Zeitschr. f. Malak. 1850. p. 67. 



— — Chemn. ed. n. Helix N. 803. t. 127. f. 17 — 20. 

 Habitat . . .? 



539. Argonautula Webb et Berth. -f Mon. I. p. 125. 



540. Parlatoris Biv. (Coll. 234. — Fruticicola Alb. 



p. 71.) - - - 126. 



541. H. latens Lowe. 



T. anguste umbilicata, depressa, tenuissima, rugulosa, pi- 

 losa, olivaceo-cornea, integumento nigricante fere omnino ob- 



8* 



