4 LEPTACHATINA. 



II. Embryonic whorls spirally striate. 



Submenus THAANUMIA, species 107-114. 

 III. Embryonic whorls transversely costate or striate. 



Subgemis ILIKALA, species 115-117. 



Distribution of species. 

 KAUAI. 



Group A : acuminata, cuneata, antiqua, laevis. 



B : knudseni. 



E: cylindrata. 



F: brevicula. 



J: pachystoma. 



M: fossilis. 



N: lucida, striata. 



: attenuata, gayi, tenebrosa, leucochila, costulosa, 



pupoidea, extensa, striatula, balteata. 

 Thaanumia : perf orata. 

 Ilikala: fraterna. 



OAHU. 



Group B : sandwicensis, stiria, illimis, scutilis. 



C: cerealis, obtusa? teres, turrita, persubtilis. 



D: gracilis, subula, terebralis. 



E : convexiuscula, exilis, saxatilis, leiahiensis, exop- 

 tabilis. 



F: accincta, crystallina, gummea, oryza, vana, capi- 

 tosa, pulchra, ovipara. 



G: fumida. 



H : glutinosa, dimidiata, pyramis. 



K: cingula, ventulus, approximans, pilsbryi. . 



L : corneola, marginata, resinula, succincta, saccula ? 



N: costulata, octogyrata, sculpta, semicostata. 

 Labiella: labiata, callosa, lagena. 

 Pauahia: artata, tantilla, chrysallis. 

 Thaanumia: omphalodes, optabilis, fuscula. 

 Ilikala: fusca, petila. 



