infests the Lombardy- Poplar. 155 



jaws open laterally, and are irregular triangles. The 

 sharpest points thereof form the teeth. A little below 

 the teeth is the tongue, evidently muscular. The head 

 is shelly, and the teeth like unto hair. The three first 

 rings from the neck have six feet rising from them, 

 three on either side. These feet are hooked and horny. 

 A space here intervenes of about three-quarters of an 

 inch, when other feet, eight in number, four on either 

 side, grow out, each from the lower edge of the ring to 

 which it belongs ; they are not so much hooked as the 

 first set. There is then a second space, about equal to the 

 first, which is terminated by two feet, one on each side, 

 and which constitute the tail extremity of the animal. 

 These two last feet are not wholly membranous, as Na- 

 turalists have mentioned those of the Caterpillars to be. 



The rings are not completely annular, but flatted on 

 one part, forming the belly. This flatness is nearly one- 

 half of the ring, and composed, as it were, of a band con- 

 necting the two horns of the ring. Where the annular 

 form is broken into a kind of an angle the feet emerge. 

 Over the back of this reptile there is fine hair, growing 

 at the anterior part of the head to a considerable length. 



Upon examining into the internal structure, this rep- 

 tile is discovered to have a straight bowel, running 

 from the head to the tail, without the least convolution. 

 A little below the neck, this rectilincous bowel is some- 

 what enlarged in its volume, and may furnish, in the 

 view of the Anatomist , a stomach. The bowel enlarges 

 again near the vent. - There arc two muscles of more 

 than an inch and a half in length, with each a fold, one 



