IS'i C;.\r.IKORNIA ACADKMY OK SCIKNCKS. 



PLATE XLIX. 



BENHAMIA PALMICOLA. 



4G. A somewhat diiiHrammntio ligiire, composed from severiil loiigitudiuiil sec-tioiis. n. org. pr. seuse orgau zone 

 of the prostomium. a. org. h. the sense orgiiu zoue of the body wall, on the etjuatorial line of the somite. 



47. Some of the seuse orgau cells of the prostomium more highly magnified. Zeiss. 12; Horn. Im. Eyrp. i. The 



seuse cells are seen in the center between the pellucid sac-like cells. Between the sense cells ore seen uuclei 

 of supporting cells. 



48. Part of a posterior somite laid open, showing the three nephridia on one side. 



4!). A part of a uephridial cell mantle, showing various kinds of cells, some of which appear to contain calculi. 

 .W. Cephalic gaugliou, etc. 



51. The spermathecal zoue seen from the'iuuer side of the body. The large globular apical ])art of each sperma- 



theca is situated in the somite posterior to the pore. 



52. Outliues of the spermatheoie of various e.itra African species of Beuhamia, some of which are copied from 



various sources. 

 5'2A-B-C-D. Spermathecai of Benhamia Bolavi, from specimens from Hamburg, kindlj- furnished by Dr. \V. 



Michaelsen. 

 52E. Spermatheca of Benhamia mnlaijana after Dr. Horst. 

 52P. Spermatheca of Benhamia Jloresiana after Dr. Horst. 



52G-H. •Two spermatheca* from the same .side of a specimen of Binhamia /lapillata from Tepic, Mexico. 

 521. Spermatheca of Benhamia wtoncphra after Rosa. 



52K-L. Spermatheca' of Binhamia jjitimicola from Miraflorcs, Baja California. 

 52M-N. A spermatheca of Ih-nhamla rmjoaa seen from two difJ'erent sides. 



