COLLINGE: NON-OPERCULATE LAND AND FRESHWATER jMOLLUSCS. 95 



Piirnf<iirnuin'oiuioit!^cit!is,u.iip Right lateral view. x i}4- 

 „ ,, Uorsal view, x i^. 



,, „ Left lateral view, x i^. 



Cryptosfiiicliis griicilis, n. sy. Right Literal view, x 1^. 

 „ ,, Dorsal view, x i^. 



,, ,, Left lateral view, x i^. 



Atopos sarasiiii, n. sp. Right lateral view, x i. 



„ ,, Dorsal view, x i. 



,, „ Ventral view, x i. 



Atopos Iianncri, n. sp. Right lateral view, x i. 



„ ,, Dorsal view, x i. 



,, „ Ventral view, x i. 



Atopos nii^osiis, n. ':^p. Right lateral view, x i. 



,, „ Dorsal view, x i. 



„ ,, Ventral view, x i. 



Atopos pinictafa. n. sp. Right lateral view, x i. 



„ „ Dorsal view. x i. 



„ ,, Ventral view, x r. 



,, „ Portion of the notum, enlarged, t > show 



the varying sizes of the papilla, 

 which give to the body a granulated 

 appearance. 

 Fig. 5.1. Atof'os laiiilaii'i, n, sp. Right lateral view, x 2. 



Fig. 54. ., ,, Dorsal view\ x 2. 



Fig. 55. ,, ,, Ventral view, v 2. 



Fig. 56. Atopos stimsiiii, u. sp. View of the ventral side of the body with 



the notum pulled forward to show 

 the tentacles, x i. 

 Fig. 57. ., „ Lateral view showing the position of 



the male and female generative 

 orifices, pulmonary orifice, and anus. 

 Fig. 58. ,, „ Position of the e.xternal orifices. 



Fig. 59- ,, ,, Alimentary canal, enlarged. 



PLATE VL 



F'ig. 60. Atopos sarasini, n. sp. Female generative organs, enlarged. 



Fig. 61. ,, „ Male generative organs and right 



Simroth gland, x 2. 

 Fig. 62. ,, ,, Portion of a transverse section through 



the distal portion of the Simroth 



gland. 

 Fig. 63. ,, ,, Diagrammatic section of the gland. 



Fig. 64. ,, ,, The penis dissected to show the internal 



walls, penis papilla, and orifice from 



duct. X 6. 

 Fig. 65. ,, „ The pedal gland, x i^. 



Fig. 66. Apci'ii htiniiipi, E. A. Smith. Generative organs, x 4. 



