PLATE VII. 



[Part II.— July 1882.] 



Fig. 1 . Anadenus ALTivAGUs, Theob. : shell, x 2. Simla. 



2. Ditto, nat. size. = giganteus, Heynemann ; from his drawing, Taf. i. fig. 1^. 



3. Anadenus schlagintweiti, Heynemann, nat. size ; from bis drawing, Taf. i. 



fig. 2e. 



4. Portion of back of A. giganteus, Heynemann ; from his drawing, Taf. i. fig. J h, &c. 



5. Anadenus altivagus, Theob. Simla. View of heart and renal organ, seen from 



below, showing position of the different muscle-attachments. M.f., Mantle, 

 frontal edge ; M.I., mantle, left side ; R., renal organ surrounding the ventricle ; 

 i., intestine ; r.m. T., P., & O., retractor muscle of eye-tentacles, penis, and 

 odontophore respectively ; Rcs.Or., position of respiratory orifice. 



6. The generative aperture cut open on the frontal side to expose the dart-sac, with 



its numerous spines and («) the perforated shield ; b, spines attached to the 

 shield at its upper margin ; c, larger and stronger spines attached to the 

 posterior upper part of the sac ; d, row of short spines extending to the genera- 

 tive aperture ; e, outer integument of the animal ; e', muscular sac ; /, the 

 aperture into the vagina and spermatheca below this and inclining upwards to 

 the left {vide fig. 7, Plate VI.) ; v.d., portion of vas deferens. 



() a. Upper portion of male organ (P), showing the termination of the vas deferens 

 within the swollen portion where the retractor muscle is given off. 



6 b. Diagrammatic vertical section of fig. 6, viewed from the side. 



6 c. Horizontal section of same. 



7. Anadenus jERDoNi, n. sp., nat. size: spirit-specimen. Kashmir. 



