mas ¥ 
THE NATURAL HISTORY SURVEY. 347 
The genitalia is very interesting; the ovotestis is very long 
and is buried in the folds of the liver; the ovisperm duct is 
very long and narrow and enters the uterus near the upper 
part; the albuminiparous gland is long-oval in shape and hasa 
long, narrow duct which empties into the uterus near the ovi- 
sperm duct; the receptaculum seminis is long and rather thick, 
Fie. 1380. 
Genitalia of VALVATA CRISTATA. (Bronn, Klassen und Ordnungen 
der Weichthiere, Malacozoa, pl. xxxviil, Fig. 23.) dal, duct from albu- 
miniparous gland; dh, ovisperm duct; gal, albuminiparous gland; gh, ovo- 
testis; p, penis; rs, receptaculum seminis; ut, uterus; vd, vas deferens. 
and the upper part is attached to the albuminiparous gland; 
the uterus is very large and very wide, narrowing toward the 
opening (atrium); the vas deferens is very short, narrow, and 
enters the uterus near the lower third; the penis is very large, 
long, thick and fleshy, and appears like a third tentacle on the 
right side of the animal, behind the right tentacle (Fig. 130). 
CunstVALVATA Ov. Fs Miller, 
Shell, Animal and Dentition: As in the family. 
Distribution: WWorld-wide. 
KEY TO SPECIES OF VALVATA. 
Ara LE! EW iti POUT EO NV MOTIS a aalr state) nin dicks unhia vrs cb eheca hy alqresd set eral sincera 
