ALPHEUS HYATT, 18S&'19(m M3 



TiBtmg Hcvmii whrn dbith <i iwrriiwi lam in 1902. It it werj vnfor- 

 tsBftte Umi he never fnUj wrote ont the ranUi of his rtodies npon 

 tibeie Adk, the niiwitrript wiydi wm loaad afto' hk deifli bang veiy 

 iwi|ilffa, iwpirMliy i^m apedCe poiiii% and altiMM^ naay of his 

 dcKriptiaos of the i^MCMi fliuMiliiii were completed, jet hk eondn- 

 wns iwn i w ilit g thdr idafiaHln|it Mid Mi^iitkii an aaHj mfodf 

 icfen«d to. He d^ Im w u g i, pdUkh m Aott paper in Sckmet in 

 1898 in which he finds that there are abont 380 tpedet of land snaila 

 m. the ialaDd of Oaho, with ^bnt leadi^feneni, BmlimdU, Adtmlmdim 

 aad Aftx. All of these are pmiwMj daesBded fraai tte leeoittj ex- 

 tinct JldbflfineQa ptwirowa of EHioaoa Talkj, whence thej migrated 

 umlhwaidy waA are now ixmaA. chiedj on the vestem sides of the lange 

 of BMBrfana which citwds afapg the eairtBS shore of the island 



Only a ^aj iew AfhatJnrihe urossed the broad lowlands in the middle 



of Aftx, however, creased ttese hn w lawls and now thrive on the 

 zai^ey bot do not live well on tiie aeawsTd face of cither ^bt 

 er the weatem ange c< mowrtaina. The BoliiaeihB are conined to tha 

 h^ parts of the eaatem reage^ bat hare not eiusaufl tte hnHaad^ and 

 are not f onnd upon the western rsnge of mnmitsins, Hj|«tt saw that 

 ^at AchatiBellidsi of the Hawanaa Island aflm de d a pneniasBity 

 faresnble oapactanity for the sta^ of flbe f ffwis of uh y sa eal cooditloBa 

 am atraetoiv. He knew the stodc from which he could trace the migra- 

 taoaa of the vazioBa dsaeeadoKt laoes^aad habecaaw fsmiliar with the 

 dtftreai phjneal siuiuaaiK iy to the efisels of whidi there noes were 

 aabjected. Thns he felt that be could dwaiiiM<iate c u a dasi w ly the 

 aMmt^ flf MviraaaMBt vpsa the aCzaetare of tiie shdls^ aad ix i i ia p a 

 mpoB the soft parts of the aaiarels TUs reaeardi would, bad be core- 

 ]deted it, hare been bis aMMterpseoe, and wonld hare added graattj to 

 the woiVa atore af b a o w tedg e. 



lo 1888, Hyatt paMished in the PncnimgB of Ike BogUm Soddf 

 c - Xaiural Hi&t4rnf, bis final paper upon the ** Larral Theorr of the 

 Origin af Cdfadar Tlsaaea," ia lAaA he audataiaa that the realBM» 

 are deaosaded 6are fi 4 ** w * fi l iotaM af psotoaoa, aad the mctaaoa assy 

 be nganli«1 as iiire|Jma of reaitieeOalar oolonies in vriiieh growth by 

 sexnal aaiam aad ireaHiag teioa of the ovare leads to the lonaa- 

 tioB of One priasaiy body Isysn friwmig aa awlaailiBi a i Falsair ar 



be called sigaaare^ beiag aiaHkeilalar ooleaieB wapoawl of only 

 one layer of riaasiy tMiairiwI ceDs luu s ii i g a ptireilire tireasu 



HjatTs aeseatiiie papcn aad paUiBhed iianMiwis corer a wide 

 no«e of ai^ieda aad iaelade aneh titire w the toapcniare af esvw 

 aad wdb; the aharere of diatiaet rearfcs of gi a riatiwn in Akda; nek 

 ndns at Xii^pa lUls; the chassaa of the CVdoiado; a disintegnfi^g 



