406 



SQUALID*. 



to, has not, I believe, been determined. A reference to a 

 paper by M. Valenciennes in the ninth volume of the Me- 

 moires du Museum, which supplies detailed descriptions of 

 four species of this genus, would probably settle this point. 



A representation of the most common species, Zygtena 

 malleus, Val. is here given as a vignette to draw the atten- 

 tion of observers to the subject. 



])\. 



