HELIX §.96. 289 



1961. costulosa Pfr. III. 159. IV. 184. V. 255.— Ins. Salomonis. 



1962. virgulata Sow. •{• I. 351. IV. 184. V. 255. — Habitat? 



1963. trochiformis Fer. (Goll. 783.) I. 206. III. 159. IV. 184. V. 255. 



— Zonitcs trochiformis Ad. — Nanina trochiformis Mart., (Dis- 

 cus) P(:itel Cat. p. 85. — Trochomorpha trochiformis Pease in 

 Journ. Conch. XVIII. 1870. p. 398 (ins. Raiatea et Tahaa) cum 

 var. palleiUe*); Proc. Zooi. Soc. 1871. p. 156. — Taheiti, Moorea. 



1964. H. subtrochiformis (Trochomorpha) Mousson. "f 



«DifTert ab H. Irochiformi Fer. testa magis discoidea, imo 

 interdum subconcavo-coniea, cariua acutiore, unibilico plerumque 

 angusliore, superficie non laevigata sed striis incrementi lineoias 

 irregulares albidas et aspectum grisescentem producentibus 

 sculpta. » (M.) 



Var. albo-striata. — Spira fusco-nigrescenS; strigis Irans- 

 versis, albis, imperfectis, eleganler ornata, ad basin fulvescens, 

 cum zona peripherica fusca. (M. 1870.) 



Helix trochiformis Gould Exped. shells p. 61. t. 4. f. 58. 

 (Non Fdr.) 

 — Eurydice Mouss. in Journ. Conch. XIII. 1865. p. 170. 

 (Non Gould.) 

 Trochomorpha suhtrochiformis Mouss. in Journ. Conch. XVII. 

 1869. p. 333. t. 14. f. 6; XVIII. 1870. 

 p. 122. 

 Ilabitat frequens in insulis Samoensibus Upolu et Savai, var. 

 in ins. Kanathia (Graffe). 



1965. nigritella Pfr. (Coil. 784.) I. 205. III. 159. IV. 184. V. 255.— 

 Zonites nigritella Ad. — Nanina nigritella Mart., Piitel Cat. p. 85. 

 — Trochomorplia nigritella Pease in Journ. Conch. XVIII. 1870. 

 p. 400; Proc. Zool. Soc. 1871. p. 457 cum var. oppressa.**) — 

 Ins. Ponape Archipelagi Carolinarum. Non in insulis Sandwich. 

 (Pease.) 



1966. H. contigua Pease. -^ 



« T. elevato- interdum depresso-conica, solida, crassa, an- 

 guste umbilicata, longitudinaliter tenuiter striata; spira obtusa; 

 anfr. 6 — 7, planulato-convexis, ultimo ad peripheriam acute an- 

 gulato, basi planulalo vel subconcavo; sutura vix impressa; 



*) «Tcsta plerumque amplior; sulcus ad basin anfractuum latior et 

 profundior; pallide flavescens; anfractibus basique linea una rufescente- 

 fusca cinguiatis ; diam. 18, alt. 11 miil. » 



**) «T. depressior, pallidc flavescens, ad suturam fascia rufescenti-fusca 

 cingulata, basi omnino rufescenti-fusc:i, plerumque linea flavescenle mar- 

 ginata; diam. 13, alt. 7 mill.» 



VII. 19 



