REPORT ON THE SLUGS. 437 



EXPLANATION OF PLATES XL. AND XLI. 



(Collinge, ShiffS.) 



Yeronicella willeyi, sp. nov. 



Fig. \. View from dorsal side. Nat. size. 



Fig. 2. View from ventral side. Nat. size. 9 female generative orifice, cl. opening of 

 cloacal chamber. 



Fig. .3. Light coloured form, view from dorsal side. Nat. size. 



Fig. 4. Intestine and liver, x 2 '5. ce. oesophagus, cr. crop. st. stomach, int^. — int*. the 

 four loops of the intestine. I. liver. The dotted portion indicates the terminal portion of 

 the intestine imbedded in the body wall. 



Fig. 5. Salivary glands as seen from the dorsal surface. 



Fig. 6. Portion of the same, slightly magnified, showing the salivary ducts, s. d. and 

 their position in relation to the pharynx, j)]i. and tlie buccal cavity, h. c. 



Fic;. 7. Terminal portion of the same, showing sac-like bodies. 



Fig. 8. Pedal gland showing variations met with, a, h, and c. x 2. 



Fig. 9. Mantle organs seen from the venti-al side. atr. atrium, p. pericardium, v. ven- 

 tricle, h. kidney. I. lung. cl. cli. cloacal chamber, res. d. respiratory duct. iir. ureter. 



Fig. 10. Terminal portions of the intestine, kidney and lung. Lettering as in Fig. 9. 



Fig. 11. Terminal portions of the intestine and respiratory duct, showing their openings 

 into the cloacal chamber cl. ch. a. anus. r. o. respiratory orifice, int''. posterior portion of 

 the intestine. 



Fig. 12. Generative organs, alb. gl. albumen gland, h. d. hermaphrodite duct. h. gl. 

 hermaphrodite gland, ov. oviduct, r. d. receptacular duct. r. s. receptaculum seminis. sp. 

 spermatocyst. v, d. vas deferens, v. s. vesicula seminalis. 



Fig. 13. Terminal ducts of the male generative organs, ac. gl. accessory glands, d. dart. 

 d. s. dart-sac. p. penis, r. m. and r. m. retractor muscles of the penis, v. vestibule, v. d. 

 vas deferens. 



Fig. 14. Transverse section through the dorsum, ep. epidermis, gl. glands, mu. mucous 

 layer containing uric acid (?) concretions u. c. m. f. muscle fibres. 



Aneitea hiriido, P. Fisch. 



Fig. 1.5. Lateral view of the animal from the right side, x 2. 



Fig. 16. Vagina vg. and penis p. of the same. 



Fig. 17. Diagrammatic transverse section through the body, x 1. 



Veronicella brunnea, sp. nov. 



Fig. 18. View from the dorsal side, x 2. 



Fig. 19. Intestine and liver, x 4. Lettering as above. 



w. IV. 59 



