448 



EXPLANATION OF PLATES OF VOL. V. 



(v.), external orifice (or.). These are, however, all indicated by their initial letters in 

 Fig. A. The accessory organs when present are all indicated by their initial letters, 

 accessory duct (a. d.), prostate gland (pr. g.), dart sac (d. s.), prepuce (pp.), flagellura 

 (fl.), accessory gland (a. g ). 



Genitalia of 



Fig. H. 

 Fig. I. 

 Fig. J. 

 Fig. K. 

 Fig. L. 



Fig. A. 

 Fig. B. 

 Fig. C. 

 Fig. D. 

 Fig. E. 

 Fig. F. 

 Fig. G. 



Fig. A. 

 Fig. B. 

 Fig. C. 

 Fig. D. 

 Fig. E. 

 Fig. F. 



Fig. A. 



Fig. B. 

 Fig. C. 

 Fig. D. 

 Fiff. E. 



Fig. A. 

 Fig. B. 

 Fig. C. 



Fig. D. 



Fig. A. 

 Fig. B. 



Patula strigosa. 

 Binneya notabilis. 

 Zonites inornatus. 



friabilis. 



lajvigatus. 

 Limax Hewstoni. 

 Mesodon Clarki. 



Fig. M. 



Plate XII. 



Mesodon Mitchelliana. 



Columbiana. 



Roeineri. 

 Triodopsis appressa. 

 Stenotrema monodon. 

 gcrmanum. 



Genitalia of {see description of Plate XI.) 



Limax maximus. 

 montanus. 

 Ariolimax Columbianus. 



Californicus. 



Andersoni. 



niger. 



Fig. G. Ariolimax HemphilH. 

 Fig. H. Prophysaon HemphilH. 

 Fig. I. var. 



Fig. J - K. Hemphillia glandulosa. 



X (see description p. 249). 

 Fig. L. Macrocyclis Vancouverensis. 



Plate XIIL 



Genitalia of {see description of Plate XI. ) 



Fig. H. 



Fig. I. 



Arlonta seqiioicola. Fig. F. 



X (see description, p. 368). Fig. G. 

 Arionta Stearnsiana. 

 Nickliniana. 

 Kelletti. 

 Mormonum. 

 7, dart sac. 



a. pr. g., accessory prostate gland. 

 X (see description, p. 367). 



Plate XIV. 



Genitalia of [see description of Plate XI. ) 



Arionta Townsendiana. Fig. E. Aglaja fidelis. 



ruficincta. Fig. F. 



Euparypha Tryoni. Fig. G. 



1,2,3 (see description, p. 377). Fig. H. 

 Glyptostoma Newberryanum. 



Same : dart. 



Same : concretions (see p. 367.) 

 Arionta Traski. 

 Vaginal prostate : x> ^^^^ ^^ 

 same. 

 Arionta arrosa. 



infuraata. 

 Mesodon clausa. 

 Stenotrema spinosum. 



Plate XV. 



Genitalia of {see description of Plate XI.) 

 Triodopsis Hopetonensis. Fig. C. Triodopsis Van Nostrandi. 



fdllax. 



Fig. C. 

 Fiff. D. 



tridentata. 



