73 



NOTES ON THE HIRUDINEI OBSERVED IN MICHIGAN. 

 By a. Sagek.» 



But two of the genera of this family have hitherto 

 been observed in this vicinity, viz. : Nephelis and Clep- 

 sine ; the former representing the subfamily with red 

 blood, and the latter comprising all those that possess 

 blood either transparent or having a slight yellow tint. 



The following species of the genus Clepsine have been 

 observed, most, if not all, of which appear to be nonde- 

 script, viz. : 



Clepsine mannorata s. n. sp. ? Body above straw- 

 colored, marbled with brown, a mesial longitudinal band 

 of the former extending the whole length of the body, 

 with seven abrupt dilatations of unequal size and form, 

 the first distinctly triangular ; the margins on the dorsal 

 surface marked with short transverse brownish bars on 

 every third segment ; numerous warty tubercles on the 

 dorsum, somewhat in five longitudinal series. Ventral 

 surface marked with twelve longitudinal green stripes, 

 the margins with short transverse green bars on every 

 third segment ; margin of the posterior sucker also marked 

 with fourteen or fifteen bars. Eyes two. Length at rest 

 1^ inches, width 6 lines. Found on the Emysaurus, of 

 Dum., and also Emys marginata. 



Cle2:>sine sex-jnincto-Iineata n. sp. Length from 6 to 

 8 lines; width from 3 to 4 lines. Color above olive 

 brown, with the surface marked with six rows of yellow 

 or white dots covering elevated points or tubercles, the 

 outer rows being marginal. Beneath flesh-colored, mi- 

 nutely dotted with brownish or greenish points ; generally 



1 Published first in the Peninsula Journal of Medicine and the Collateral Sci- 

 ences in July, 1856. 



