Iviii HISTORY OF ACHATINELLID^E. 



okai, Zoologica, vol. 19, 1906, and Monographic der auf der 

 Sandwichinsel Kauai lebenden Molluskengattung Carelia, 

 Abh. Senck. Naturforsch. Ges. vol. 32, 1910. The first was 

 based chiefly upon material collected by Mr. Meyer and his 

 sons, purchased by Professor H. Schauinsland. It contains 

 a lengthy history of the literature of Achatinellidffi and an 

 excellent bibliography. 



IV. 



In the last six or eight years there has been a revival of 

 interest among Hawaiian naturalists, and a number of large 

 collections have been formed. The exact data preserved, the 

 large series obtained from a great number of localities and 

 the new localities exploited, give these collections great value, 

 whether for systematic or for biometric investigations. Sev- 

 eral papers by Dr. Cooke have been based upon this material, 

 and it has also been utilized in these volumes. The few 

 months spent by the senior author in the Islands did not 

 permit anything more than a superficial study of these collec- 

 tions. Much of what value this work possesses is due to 

 information derived from material brought together by the 

 competent and enthusiastic Hawaiian naturalists of the pres- 

 ent time. 



