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DESCRIPTIONS OF LABYRINTHUS EUGLAUSUS kl^iH NEOCYCLOTUS 

 BELLI, N.spp., FEOM COLOMBIA. 



By Colonel E. H. Beddome, F.L.S. 



Read 8th November, 1907. 



Labtkinthos EUCLAtrsus, n.sp. 



Umbilicate, depressed lens-shaped, acutely carinate, pearl-coloured 

 "with, two narrow spiral chestnut bands continued along the whorls 

 above and one similar band below near the periphery ; surface 

 minutely granulate and with irregular oblique striation ; whorls 4^, 

 flat, slowly widening, the last acutely carinate, abruptly deflexed 

 anteriorly, concave and contracted behind the peristome near the 

 umbilicus ; aperture much longer than broad ; peristome reflexed, 

 white, continued across the parietal wall, where it is rather deeply 

 sutured ; parietal lamina large, elevated, running well into the shell ; 



basal margin of the peristome with a large elevated receding arched 

 lamina which all but touches the parietal lamina and almost shuts up 

 the orifice, behind this are two teeth which are entering angular folds. 

 Greatest diameter 31 mm. 



Singularly like L. uncigera in shape and colouring, but with quite 

 different laminae or teeth in the aperture. 



Hob. — Colombia, near Zaragoza, 800 feet elevation, in dense forests. 

 Lately discovered by Mr. Ernest Bell (mining engineer). 



Neocyclottjs Belli, n.sp. 



Shell openly but rather narrowly umbilicate, turbinately depressed 

 with conical spire, solid, of a rich chestnut-brown, somewhat paler 

 underneath and at the sutures ; whorls five, convex, the first four 

 gradually increasing, the last very large, the two apical ones smooth 

 and shining, the others with prominent close oblique transverse 

 striation ; aperture obliquely subcircular ; peristome simple, thick, 



