EXPLANATION OF PLATE. 



FIG. 1. Cri/oMflla lev'ujata, from an example preserved in alcohol, X 3. The body has been twisted so 



as to show part of the ventral surface anteriorly and part of the dorsal surface posteriorly. 

 FIG. 2. Outline drawing of the same, life size. 

 FIG. 3. Cri/oldella levigata. Diagram showing external features and ventral nerve-ganglia. Somites 



numbered in Roman, and rings in ordinary figures, an. Anus. clit. Clitellum. c.oe.g. 



Circunioesophageal ganglionic mass, tilth. Mouth. p.(j. Posterior ganglionic mass. v.y. 



Ventral ganglion. 

 FIG. 4. The same. Diagram showing the reproductive and alimentary .systems, an. Anus. cap. 



Caeca, ellt. Clitellum. or. Crop. ej.c. Ejaculatory canal, int. Intestine, ruth. Mouth. 



ov. Ovary, prb. Proboscis, te 1, te 4. First and fourth pairs of testes. tp. Terminal 



portion of ejaculatory canal. 



