196 CALIFORNIA ACADEMY OF SCIENCES. 



PLATE LVI. 



SPAKGANOPHILUS SMITHI. 



130-136. Cross-sectious through various somites. The details are indicated diagi-nmrnatically. The Roman numer- 

 als indicate the number of the somite or somites through which the section passes. «. m. septal muscles. 

 a. s. gt. accessory septal gland of septum between somites ix and x. spz. t. spermatozoa in spermtauks. spz. ». 

 spermatozoa and spermatogonia in sperm-sacs. ok. ovisac, a. m. t. arciform muscles of tubercula puber. 

 tatis, connecting the opposite surfaces of the tubercula pubertatis. o. m. c. arciform muscles passing from 

 opposite sides of clitellum through the coulomic cavity. 



137. Section through sacculated intestine, hi. e. blood capillary reticulum. 



138. Tubercula pubertatis, Zeiss Hom. Im. ,',. of. m. arciform muscles passing through ca-lom. a/. (. arciform 



muscles confined to the epidermal cells of the tubercula. 



139. Section through the liody-wall through one of the prostates, r. m. retractor muscles passing to the cuticle 



and the outermost epidermal cells, ct. connective tissue. 



SPAKGANOPHILUS CARNEUS. 



140. Two spermathecaj from the same specimens. The free or apical end is seen to be almost globular. 



SPAKGANOPHILUS GUATEMALENSIS. 



141. a and b. Two spermatheca'. 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 setai. 



143. A spermatheca. 



DELTANIA TROYERI var. LAGUN.^:. 



144. One of the penial setio with the tip more highly mngnitied. 



145. Two spermatheca-, both from the same specimen. A and B are seen fmni the broad side, C from the narrow 



side. 



146. Two prostates with peuial seta». A is seen from the Hat side, B is seen from the broad side. 



147. Section of one of the ovisacs. Zeiss /,, Hom. Im. 



