148 PULMONATA. 



Zonites (algireus), Montf. Conch.ii. 283, 1810. 



Beck, Index. 



Albers, Heliceen, 63. 

 Tragomma (algireus), Held in Isis, 1837, 916. 

 .Egopsis (verticillus), Fitzinger, Syst. Verz. 99. 

 Helicoides (algira), Dumas, Compt. Rend. xxv. 113. 



If M. Desmoulins' figure of the animal of Ariophanta is cor- 

 rect, it and Zonites will form a section by themselves, as they 

 are figured with the foot depressed and broad at the end, hke 

 the Arions and Helices, and not compressed and truncated, hke 

 the Helicarions, Nanince, Stenopi, &c. Guilding's, Hardwicke's 

 and Layard's figures of these animals, taken from life, show that 

 the compressed form does not depend on the animal ha\Hng 

 been contracted in spirits. 



The jaws of Zonites are \vithout any marginal denticles, but with 

 a more or less large rostrifonn prominence on the middle of the 

 free edge ; the conical purse is without any versicula multifida, 

 dart or dart-case. — Moquin-Tandon, Journ. Conch. 1853, 234. 



a. American. — Subcaudal gland large. Moreletia, Gray. 



1. Zonites euryomphala. 



Shell umbilicated, orbiculate-convex, thin, pellucid, greenish 

 horny, regularly costidate-striate above, obsoletely decussated 

 with concentric lines, more distantly striated beneath, very bright; 

 spii-e scarcely elevated, obtuse ; whorls six, slightly convex, the 

 last dilated, rather depressed, not descending in front ; umbilicus 

 large, pervious ; aperture obliquely lunate-oval, iridescent inside ; 

 peristome straight, simple, margins connivent. Lat. maj. 3/, 

 min. 32, alt. 17 mill. 



Animal (Morelet, t. 2. f. 6) pale grey, with darker grooves ; 

 head blackish, with radiating striae between the tentacles con- 

 verging towards the mouth ; labial appendages small, prominent, 

 bright jellow ; tentacles black ; subcaudal gland large, erect. — 

 Morelet. 



HeUx euryomphala, Pfr. Proc. Zool. Soc. 1845, p. 71 ; Man. 

 Helic. I. 107 ; Ic. n. 943. t. 144. f. 1, 2. 



Morelet in Journ. Conch. 1851, ii. 14. t. 2. f. 6. 

 Reeve, Icon. n. 533. t. 97. 

 HeUx cymbalum, Morelet, Test. Noviss. i. 7. n. 1. 



Hub. Coban, Guatemala. 



