Achatinella and other Pidmonata. 333 



A. prnducta,'Rv., Oahu. 



A. Johusonii, Newc, Oahu. 



4. Apex, Alb. and v. Mart., p. 24:8. 



Not represented in the Giilick shells. 

 [Apex pallida, Nutt., see above under Partulina, is 

 treated by Pfr. as syn. of lorata, Ffr., nou Fer. 

 of the subgenus Achatinella s. str., while von 

 Martens puts it in the syn. of lorata, Fer., in the 

 subgenus Partulina.] 



5. Newcombia, Pfr., p. 249. 



Laminella picta, Mghs., W. Maui. 



6. Laminella, Pfr., p. 250. 



Amastra Mastersi, Newc, E. and W. Maui. 



(syn. of rubens, Gld. teste Pfr.) 



Amastra decorticata, Gu\., on the gronuc\, . . . Oahu. 



" luctiiosa, Pfr., " " «< ... " 



" nigrolahris, Smith, on trees, .... " 



7. Leptachatina, Gould, p. 251. 



L, nitida, Newc., W. Maui. 



L. grana, Newc, W. Maui. 



L. dimidiata, Pfr., Oahu. 



8. Labiella, Pfr., p. 252. 



Not represented among the Gulick shells. 



The specimens were forwarded to Binney, the result of 

 whose anatomical examinations are given below in detail. 

 It may be stated here, however, that both in form of jaw 

 and character of the lingual dentition, all the species of 

 Partidina and AcJmtineUa s. str. sent by Mr. Gulick agree. 

 They all share a form of dentition quite uncommon in the 

 Helicidce. Of the same type of dentition is A. bidimoides 

 examined by Heynemann. (See pi. xv, fig. 11.) 



The jaw and lingual dentition of all Mr. Gulick's species 

 of JSTewcombia and Laminella are alike, thus indicating a 

 separate group for these subgenera. The lingual membrane 

 shows the usual type of Helicinoe, but the central tooth is 

 quite narrow. (See pi. xv, figs. 9-11.) 



Similar to the last group in the form of jaw and character 

 of central and lateral teeth are all the species of Leptachatina 

 received Irom Mr, Gulick. They have, however, a different 

 form of marginal tooth, distinguished by the blunt digitation 

 of the reflected apex of the tooth (see pi. xv, fig. 8), which 



