100 DR. THOMAS ALCOCK OX THE 



face, the skin was of a light transparent brown colour, 

 spotted with small flakes which had a perfect metallic 

 lustre, exactly like bits of gold leaf; and these appeared to 

 be embedded at different depths in the substance of the 

 skin. Round the borders of the head and body the skin 

 formed a fold which was nearly transparent ; and some 

 slight movements of the gills could be seen through it. 

 On the left side, the opening of the gill-chamber was seen 

 slightly projecting ; and a current out of it could be detected 

 by the presence of small particles in the water. 



On the under side, the suckers were very small and 

 wasted ; they were evidently useless. A slightly depressed 

 line passed across the middle of the body, showing the 

 junction of the opercular fold with the skin of the abdomen. 

 In this view the gill-aperture could not be seen from below, 

 but was visible when looked at from above. The coiled 

 form of the intestine was plainly seen through the walls 

 of the abdomen. Small rudiments of hind limbs were 

 present as before. The flakes like gold-leaf in the skin 

 were first noticed three days ago. 



31. The tadpole examined today was a fine one. The 

 view of its back under the microscope presented a lovely 

 sight ; it was a rich light brown colour, spangled with 

 large flakes of gold. There were many small spots of gold 

 in the skin over the eyes ; the eyes themselves moved 

 freely about, and they were rather prominent. 



A drawing was made of the ventral surface (31). The 

 mouth was quite an elaborate affair : the lips were white 

 and beautifully scolloped and frilled ; within the upper 

 lip was a row of very numerous small dark-brown homy 

 teeth ; and within the lower lip were three imperfect rows of 

 similar teeth ; inside the lips, at the centre, was a pair of 

 brown horny jaws, the upper one the larger, and closing 

 in front of the lower. The suckers had entirely disap- 



