24 ORCULA. 



to Letourneux), but in others the lower one is weakly visible, 

 or two very low subequal ones may be seen. Inside there are 

 two nearly equal and not very large, parallel columellar 

 lamellae. No palatal fold. 



Length 6.3, diam. 2.5 mm. ; 8% whorls. Smyrna. 



Length 5.2, diam. 2.3 mm. ; 7% whorls. Smyrna. 



"Length 6.5, diam. 2.25 mm.; 9 whorls" (Letourneux). 



Santorin, one specimen at Messa Vouno; common around 

 Smyrna (which is here designated as type locality) ; Rhodes; 

 thrown up on the beach of Ramie near Alexandria (Letour- 

 neux). 



Orcula turcica ("Bourguignat, Species noviss. Moll, in 

 Eur. syst. detect., 1878, no. 153"; never published) Letour- 

 neux, Bull. Soc. Malac. France, i, 1884, p. 298. — Orcula scy- 

 phus Pallary, Mem. Inst. Egyptien, vi, pt. 1, 1909, p. 41, pi. 

 3, f. 22. 



Usually of long form with over 8 whorls, though sometimes 

 shorter; rarely showing the spaced riblets of doliolum in 

 adult shells ; with receding columellar lamellas, weakly or not 

 visible in the mouth. The parietal lamella of typical doliolum 

 becomes lower in the back, stronger again toward its inner 

 end. In turcica, it remains nearly equal in height throughout. 

 0. d. turcica appears to me to be a recognizable race, and 

 certainly has nothing to do with scyphus. Figured from 

 Smyrna topotypes received from Jetschin. 



Pupa critica Zelebor (Pfeiffer, Malak. Blatter, iii, 1856, 

 p. 177, as a variety of doliolum; Monogr., iii, 540) has never 

 been fully described. In his notes on the shells collected by 

 J. Zelebor (preparator of the k. k. Hof-Naturalienkabinet in 

 Vienna) on the island of Syra, in the Grecian Archipelago, 

 Pfeiffer says : 



Pupa doliolum Brug. "Under stones and on roots, rare." 

 A variety with the columellar fold very little developed, which 

 was indeed named Pupa critica by Mr. Zelebor, but which is 

 certainly not separable from doliolum. 



Both doliolum and "scyphtis" have been reported from 

 Syra by Westerlund and Blanc (Aperqu sur la Fauna Malac. 



