1888.] NATURAL SCIENCES OF PHILADELPHIA. 37 



IE. recta, Newc. (Achatinella). Proc. Zool. Soc. pi. 22, f. 45-1853. 

 Laminella recta, Pfr. Mall. Bliitt. 136-1854. 

 Achatinella nympha, Gul. Ann. Lye. N. Y. 251, pi.- 8, f. 9-1858. 

 Eburnella recta, Pse. Proc. Zool. Soc. 647-1869. 



Waialua, Oahu. 

 E. saccata, Pfr. (Achatinella). Mon. Helic. vj.-175. 



Eburnella saccata, Pse. Proc. Zool. Soc. 647-1869. 



Sandwich Islands. 

 E. semicarinata, Newc. (Achatinella). Proc. Zool. Soc. pi. 24, f. 76-1853. 

 BuUmella semicarinata, Pfr. Mall. Blatt. 124-1854. 

 Eburnella semicarinata, Pfr. Nomen. Helic. Viv. 309-1881. 



Lanai. 

 fE. undulata, Newc. (Achatinella). Bost. Jour. Nat. Hist. 218-1855. Amer. 

 Jour. Conch, pi. 13, f. 15-1866. 



Laminella curta, Pfr, Mall. Bliitt. 139-1854. 

 Achatinellastrum curta, Pfr. Mall. Bliitt. 164—1856. 

 Eburnella curta, Pse. Proc. Zool. Soc. 647-1869. 



Waialua, Oahu. 

 Obs. I think this a variety of E. curta, Newc. 



fE. variabilis, Newc. (Achatinella). Proc. Zool. Soc. pi. 24, f. 70-1853. 

 Achatinella falva, Newc. Proc. Zool. Soc. 208-1855. 

 Achatinella lactea, Gul. Ann. Lye. N. Y. pi. 6, f. 27-1856. 

 BuUmella variabilis, Pfr. Mall. Bliitt. 124-1854. 

 Eburnella variabilis, Pse. Proc. Zool. Soc. 647-1869. 



Lanai. 

 Section APEX, « Albers.-1860. 



*The species of tlie Section Apex, are involved in almost inextricable confusion. 

 Autlinrs in many instances, liave not f^iven the li;calilies of the species, and the 

 great vmiahility in si/e and ci/lor of many species, added to the many intermediate 

 varieties, entails an almost endless task to sei)arate them. To arrive af a certainty, 

 the ci.lor of the animal and mnniel must be observed, and local suites should be 

 colli.ciefl liy which critical comparisons could be instituted. It is to be re<^retted, 

 that species have been multiplied on slight "grounds. In my endeavours to arrive 

 at a correct synonymy. I may have erred by restricting the species within too 

 narrow limiis, which will be for future observers to correct. The Section Apex 

 exhiliiis four prevailing type-, as illustrated by the ^ptc\es iurg-ii/a,»iusU//uia, per- 

 versa and Sivi/tii, from which all others seem but modifications. 



fA. cestus, Newc. (Achatinella). Proc. Zool. Soc. t. 22, f. 8-1853. 



BuUmella cestus, Pfr. Mall. Bliitt. 125-1854. 

 Helicter cestus, Pse. Proc. Zool. Soc. 645-1869. 

 Apex cestus. Pfr. Proc. Zool. Soc. 310. 



Palolo, Oahu. 



