36o FAUNA HAWAIIENSIS 



adnato, plica obliqua, parva, compressa munito, marginibus callo tenui junctis. Alt. 

 7-5 ; diam. 3-5 mill. 



Plate XL fig. 26. 



A somewhat conic shell, in which, when adult, the columella plait becomes incon- 

 spicuous. One adult and three young specimens. 



Hab. Molokai (Perkins). 



(16) Leptachatina convexiuscula, sp. nov. 



Testa turrita, elongata, gracilis, tenuiuscula, dextrorsa, brunneo-cornea, laevis, polita, 

 nitida, apice obtusulo ; anfr. 6|, convexi, turgiduli, ultimus ^^g- altitudinis testae aequans ; 

 sutura bene impressa ; apertura pyriformis, margine columellari sinuato, plica minima 

 munito, marginibus callo tenuissimo junctis. Alt. 8 ; diam. 2 '8 mill. 



Plate XI. fig. II. 



A shell of the group of L. exilis Gulick, but with more inflated whorls, slightly 

 more tapering towards the apex, and the mouth not so drawn out to the right. Three 

 specimens. 



Hab. Oahu, Waiolani (Perkins). 



( 1 7) Leptachatina corneola Pfeiffer. 



Achatinella corneola Pfeiffer, P. Zool. Soc. London, 1845 [1846], p- 90. 

 Achatinella corneola Pfeiffer, Reeve, Conch. Icon. Achatinella, sp. 4. 



Hab. Oahu ? (Baldwin) ; Oahu, one young specimen (Hutchison). 



(18) Leptachatina coruscans Hartman. 



Leptachatina cornscans Hartman, P. Ac. Philad. 1888, p. 52, pi. i. fig. 16. 



A variable shell in thickness and colouration. 



Hab. Molokai (Hartman) ; Kamalo (Baldwin) ; Kapanui, Kolamaula, and at 

 4000 ft. (Perkins). 



(19) Leptachatina costulata Gulick. 



Achatinella costulata Gulick, Ann. Lye. New York, vi. (1856), p. 177, pi. vi. 

 fig- 5 ; Sykes, P. Malac. Soc. London, iii. pi. xiv. fig. 4. 



Newcomb united this shell with L. semicostata Pfeiffer, but Gulick's type is much 

 more slender than that species, the mouth is of a different shape, and other minor 

 differences exist, all leading me to regard it as a good species. 



Hab. Oahu, Pupukea, Waimea, and Kawailoa (Gulick). 



