48 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 'J2 



Dr. Bartsch, in preparing a monograph on the land shells of the 

 Epiphragmophora californiensis group, was very much puzzled hovf 

 to account for the presence of two very closely related subspecies at 

 Pt. Pinos, California. He took this occasion to visit Pt. Pinos, and 

 there found that the two subspecies do not occupy the same habitat. 

 The smaller of the two was found in great abundance under plants 

 on two of the rocks lying oft' the Point, separated from the mainland 

 by a gap across which one could easily leap, while the larger sub- 

 species, which was rather rare, was found on the ground, buried 

 beneath needles and vegetable detritus. Two subspecies of the 



Fig. 6o. — The home of Epiphragmophora californiensis Lea, a species of land 

 shells, off Pt. Pinos, California. 



Epipliragiiiupliora tiidicnlata group were found to occupy a similar 

 range. 



Mr. Henderson and Dr. Bartsch arrived in Honolulu a few days 

 prior to the meeting, and this time was used for collecting land, 

 fresh-water, and marine shells on the island of Oahu. They also 

 collected mullusks during their sojourn about the wonderful crater 

 of Kilauea, on the occasion of the visit by the congress to the island 

 of Hawaii. Several stations were likewise made between Kilauea and 

 the Kohala coast. A large number of marine shells were secured 

 from the rocky shores of Honaunau Bay. 



Since the first accommodations to be secured for the return were 

 dated September 8, the intervening time between the close of the 



