432 REPORT OX THE SLUGS. 



imbedded in the substance of the liver, and enters as loop number four into the body 

 wall just behind the opening of the female generative orifice. The anterior portion 

 of loop four passes backwards above the kidney, posteriorly it is covered by the 

 body-wall only, and terminates on the ventral side of the cloacal chamber (PI. XL. 

 Figs. 9 and 11). 



The whole of the intestinal tract, it will thus be seen, is practically imbedded in 

 the liver, so that V. %uilleyi in this particular agrees with that group of Veronicella 

 which would also contain V. hennigi, Simr., and V. hedleyi, Simr. 



I was not able to detect any ring-like swelling between the oesophagus and crop, 

 but between the terminal portion of the crop and the commencement of the stomach 

 there is a thick muscular ring-like constriction, immediately behind which the hepatic 

 ducts open. 



II. The Pedal Gland. 



Although approaching somewhat the condition which obtains in V. leydigi, Simr., 

 there are a few well-marked features in the gland of V. willeyi in which it 

 differs from the former. 



The gland commences as a slit-like opening, e.g. O, immediately above the foot- 

 sole, the anterior edges of the latter partly hiding the opening of the gland. Lip-like 

 protuberances form the boundaries of the commencement of the ca^'ity. The gland 

 lies free in the body-cavity upon the dorsal side of the muscles of the foot-sole. 

 The anterior portion is slightly wider than the rest of the gland, agreeing in this 

 particular in all the specimens dissected. In general shape and size considerable 

 differences were noted (PI. XL. Fig. 8 a — c) ; in all the specimens, however, some 

 portion, either to the right or left, was turned forwards (PI. XL. Fig. 8 a, b, c). 



In transverse section the lumen of the gland is almost circular, the glandular 

 wall being about twice the width of the lumen. The epithelial lining of the gland 

 is continuous around the cavity. 



III. The Kidney, Lung and Pallial Organs. 



In V. willeyi I have been able to trace the ureter, and have figured in some 

 detail the relations of kidney and ureter with the lung and the hinder part of the 

 intestine (PI. XL. Figs. 9 to 11). 



The general structure of these organs calls for no special mention excepting that 

 here the trabecular tissue is very dense and much folded. In general outline the 

 kidney is not unlike that in V. leydigi, Simr., only differs in extending for some 

 short distance below the hinder part of the intestine; posteriorly it narrows and opens 

 into the rectum by a short but wide ureter which is plainly visible under a low- 

 power dissecting microscope. Towards the outer wall of the pericardium and on the 

 dorsal side is a minute but very distinct slit-like opening, which seems to be connected 

 with the anterior and inner portion of the kidney. Possibly this is the reno-pericardial 

 opening, but as I was unable to verify this by the transverse sections, it must be 

 regarded only as a supposition that this is the true reno-pericardial opening. On the 



