A CHAPTER ON ZYG^NA MINOS. 51 



1 is very long, pointed, and fills up the space between 

 the costa and sub-costal nervure at the base ; 2 and 4 are 

 entirely confluent, form a spot anteriorly rounded, which fills 

 up the space between the median and sub -costal nervures, 

 and reaches as far as the first branch of the median nervure. 

 3 unites with 5 and 6 to form a spot, which, pointed towards 

 the base, is much expanded posteriorly, and is gradually lost 

 in the ground-colour towards the hind margin. The above 

 markings may be looked on as those of the typical Z. Minos. 

 In the year 1839, 1 collected, in three days, upwards of a 

 hundred of this Zygcena, and thereby found that the normal 

 form is very scarce near Glogau, and only occurs sparingly 

 among the varieties. 



The most frequent specimens (var. &), have the spot formed 

 out of 2 and 4, more or less deeply emarginate on both sides. 



This also occurs sometimes, when (though that very rarely 

 happens) the spot composed of 3, 5 and 6 is slightly exca- 

 vated on both sides between 3 and 5 (var. c). 



But the deeper this excavation is, the smaller are the 

 original spots, and, where they are actually separated, they 

 are restricted to a very sm^all space. In var. d (2 $ and 

 1 ? ), the separation between 2 and 4 has taken place, and 

 one specimen has, instead of 4, a small spot of the size of the 

 3rd spot in Zygcena jmnctum ; in the two others, 4 forms 

 a fine point towards the base. 



Var. e (5 (^ , 1 ? ) shows a separation between 3 and 5. 



There are connecting links between these varieties, in 

 which, on one or both wings, spots 3 and 5, 2 and 4, are 

 connected by a slender thread of red. 



The two last varieties {d and e) do not show half as much 

 red on the anterior wings as the typical var. a does. 



Nearly all the specimens of varieties, h, c, d and e, have, 

 on the hinder margin of the united last pair of spots, a deep 



e2 



