196 CALIFORNIA ACADEMY OF SCIENCES. 
PLATE LVL. 
SPARGANOPHILUS SMITHI. 
130-136. Cross-sections through various somites. The details are indicated diagrammatically. The Roman numer- 
als indicate the number of the somite or somites through which the section passes. s. m. septal muscles. 
a. s. gl. accessory septal gland of septum between somites ixand x. spz. ¢. spermatozoa in spermtanks. spz. s. 
spermatozoa and spermatogonia in sperm-sacs. os. ovisac. a.m. ¢. arciform muscles of tubercula puber- 
tatis, connecting the opposite surfaces of the tubercula pubertatis. a. m.c. arciform muscles passing from 
opposite sides of clitellum through the cwelomic cavity. 
137. Section through sacculated intestine. 06]. c. blood capillary reticulum. 
138. Tubercula pubertatis, Zeiss Hom. Im. ,';. af. m. arciform muscles passing through celom. af. t. arciform 
muscles confined to the epidermal cells of the tubercula. 
139. Section through the body-wall through one of the prostates. 7. m. retractor muscles passing to the cuticle 
and the outermost epidermal cells. ct. connective tissue. 
SPARGANOPHILUS CARNEUS. 
140. Two spermathece from the same specimens. The free or apical end is seen to be almost globular. 
SPARGANOPHILUS GUATEMALENSIS. 
141, aand b. Two spermathecw. The apical end is flat and trawl-like, bearing a sac-like pouch which connects 
with the interior of the spermatheca, through a small slit. 
DELTANIA TROYERI var. CRASSA. 
142. A prostate gland with penial sete. 
143. A spermatheca. 
DELTANIA TROYERI var. LAGUN. 
144. One of the penial set with the tip more highly magnified. 
145. Two spermathecs, both from the same specimen. 4A and B are seen from the broad side, C from the narrow 
side. 
146. Two prostates with penial set. A is seen from the flat side, B is seen from the broad side. 
147. Section of one of the ovisacs. Zeiss 4, Hom. Im. 
