212 . BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
many of the earlier drawings which appear on the plates, whose perfec- 
tion accentuates the sense of loss due to his premature death. Miss 
Evelyn Mitchell has prepared those subsequently required. 
I have also to express my gratitude to Dr. Alexander Agassiz for his 
consideration during the years which have elapsed since this work was 
begun, and his constant kindness at all times. 
SMITHSONIAN INSTITUTION, 
May, 1908. 
List of Mollusca from deep water of the eastern Pacific Ocean dredged 
by the U.S. S. “ Albatross” on the coasts of Middle and South America, 
1887-1904, or reported by other expeditions. 
CEPHALOPODA. 
Argonautidae. 
Argonauta cornuta Conrad. A 
Argonauta nouryi Lorois. 
Argonauta pacifica Dall. 
GASTROPODA. 
PTHROPODA. 
Cavolinitdae. 
Cavolina telemus Linné. 
Cavolina uncinata Rang. 
Cavolina longirostris Lesueur. 
OPISTHOBRANCHIATA. 
Acteonidae. 
Acteon panamensis Dall. 
Acteon (Microglyphis) mazatlanicus Dall. 
Acteon (Microglyphis) curtulus Dall. 
Acteon (Microglyphis) perconicus Dall. 
Scaphandridae. 
Scaphander cylindrellus Dall. 
Scaphander interruptus Dall. 
Cylichnella (Bullinella) inca Dall. 
Cylichnella (Cylichnium) pizarro Dall. 
Cylichnella (Cylichnium) atahualpa Dall. 
