dS a chapter ox ZYG^NA MINOS. 



after the discoverer and observer, though it may a] so be 

 considered as Z. Minos, var. h.* 



In this Zygcena Heringi the middle spot of the anterior 

 vrings immediately strikes the eye ; it expands suddenly very 

 considerably, fills up nearly the -whole breadth of the space 

 between the first and second branches of the median vein, is 

 rounded, and reaches even further towards the hind margin 

 than in Z. Minos. In no. Silesian, Pomeranian, Augsburg 

 or Austrian specimen of Z. 3Iinos known to me has the 

 spot this expansion inwardly — neither has Z. Erythrus — 

 but, perhaps, almost Z. Pluto, Bdv. Icon. pi. 52, f. 4, only 

 that it is here much shorter, and therefore further from the 

 hind margin. The second peculiarity of Z. H'eringi is, that 

 the hind margin of the anterior wings is externally convex, 

 with the convexity most protruding below the middle, whereby 

 not only the apex of the wing is kept somewhat back, but 

 also the breadth of the wing appears more considerable. 

 The third difference is shown in the antennjE, which, in the 

 male far more imperceptibly than in the female — one must, 

 however, compare males with males, females with females — 

 are more attenuated from the club towards the base, and in 

 the female are longer and have a more slender club. Every 

 thing else is variable, as in the allied species, even the form 

 of the posterior wings. Only the males have a little grey in 

 the apex of the posterior wings, the females none at all. 



* Vars. h, c, d, g, /and g will be found in the " Isis," 1840, at p. 138. 



OX ZYG.^XA MINOS. 

 By C. F. Freyer. 



[Published in 1841, Eat. Zeitung, p. 85.] 

 Herr Zeller of Glogau has given, in the February number 

 of this Zeitung, some very interesting remarks on some of the 



