92 HELIX §. 32. 



bilicus conicus, ^/^ diarnetri subaequans; aperlura diagonalis, 

 lunato-rotundata; perist. simplex, rectum, marginibus conver- 

 gentibus, columellari subpatulo. — Diam. maj. 17, min. 15, alt. 

 9 mill. (ColL Nr. 242.) 



Helix infecta Parreyss in sciied. 

 — — Pfr. in Malak. BL IV. 1857. p. 86. 

 Habitat in Canada teste Parreyss. 



Obs. Differt ab aflini H. alternatu Say testa minore, tenuiter co- 

 stulato-striata, ab //. strigosa Gould spira elatiore, anfracfu ultirao non 

 descendente, etc. 



*- .,, -* 



562. ptychomphala Pfr. (Proc. 18I3I. p. 254. — llv. 

 n. 760. t. 126. — Ch. ed. nov. III. p. 374. — 

 Patula Pfr. Vers. p. -126. — H. ptycomphala Forb.) Mon. III. p. 98. 



563. H. confusa Pfr. 



T. umbilicata, conoideo-semiglobosa, tenuiuscula, confertim 

 striata et irregulariter spiraliter subsulcata, glutinosa, fulvo-lutea, 

 castaneo-radiata ; spira breviter conoidea, obtusa ; anfr. iVa, 

 ultimus latus, obsoletius striatus, supra peripheriam subimpres- 

 sus, antice non descendens, basi convexus, laevior; umbiiicus 

 perspectivus , V^ diametri aequans, intus concolor, striatus; 

 apertura fere diagonalis, truncato-ovalis, intus margaritacea; 

 perist. simplex, rectum, margine columellari superne subdila- 

 tato, patente. — Diam. maj. 35 — 39, min. 28 — 32, alt. 17 — 18 

 mill. (Mus. Cuming.) 



Helix confusa Pfr. in Proc. ZooL Soc. 1833. p. \\t. 

 — — (PatuLi) Pfr. Vers. p. 126. 



p. Fusca, pariuu nitida, anfractu ultinio distinctius striato. 



Habitat «Cape Upstart» Australiae , nec non « Wide Bay» 

 (Stutcbbury). 



Obs. Differt ab affini H. ptychomphala striis rectis (in illa undulatis), 

 anfractu ultimo latiore, subdepresso, fere laevigato, umbilico concolore 

 (in illa castaneo, fascia lutea circumdato) etc. 



564. Strangci Pfr. [Rv. n. 416. t. 79. — Patula Pfr. 



Vers. p. 126.) Mon. III. p. 98. 



565. H. bullacea Pfr. 



T. umbilicata, convexo-depressa, tenuis, superne confer- 

 lissime capillaceo-striata, sericea, pellucida, pallide cornea; 

 spira vix convexa, vertice subtili; sutura simplex , impressa; 

 anfr. 4 celeriter accrescentes, convexiusculi ; ultinms antice non 

 descendens, peripheria rotundatus, laovigatus, basi convexus, 

 radiato-striatus, corneo-virens; umbilicus mediocris, conicus; 



