182 
46. 
52A- 
52K. 
52F. 
52G- 
52K- 
CALIFORNIA ACADEMY OF SCIENCES. 
PLATE XLIX. 
BENHAMIA PALMICOLA. 
A somewhat diagrammatic figure, composed from several longitudinal sections. s. org. pr. sense organ zone 
of the prostomium. ss. org. b. the sense organ zone of the body wall, on the equatorial line of the somite. 
Some of the sense organ cells of the prostomium more highly magnified. Zeiss. 12; Hom. Im. Eyrp. 2. The 
sense cells are seen in the center between the pellucid sac-like cells. Between the sense cells are seen nuclei 
of supporting cells. 
Part of a posterior somite laid open, showing the three nephridia on one side. 
A part of a nephridial cell mantle, showing various kinds of cells, some of which appear to contain calculi. 
Cephalic ganglion, ete. 
The spermathecal zone seen from the inner side of the body. The large globular apical part of each sperma- 
theca is situated in the somite posterior to the pore. 
Outlines of the spermatheew of various extra African species of Benhamia, some of which are copied from 
various sources. ‘ 
B-C-D. Spermathecw of Benhamia Bolavi, from specimens from Hamburg, kindly furnished by Dr. W. 
Michaelsen. 
Spermatheca of Benhamia malayana after Dr. Horst. 
Spermatheca of Benhamia floresiana after Dr. Horst. 
H. Two spermathece from the same side of a specimen of Benhamia papillata from Tepic, Mexico. 
Spermatheca of Benhamia octonephra after Rosa. 
L. Spermathecw of Benhamia palmicola from Miraflores, Baja California. 
52M-N. A spermatheca of Benhamia rugosa seen from two different sides. 
