SILK-PRODUCING LEPIDOPTERA. 39 



again met with a few specimens. It is also to be found at 

 Hollybrook, Co. Sligo (Missff.) ; Kiliynon, Westmeath {Miss R.) ; 

 Favour Eoyal, Tyrone ; and Enniskillen ; but except at Clon- 

 brock, Co. Galway, where several have been captured by 

 Mr. Dillon, single specimens only have been taken. The 

 summer form, delunaria, has not been yet noticed in Ireland to 

 my knowledge. 



Selenia tetralunaria, Hufn. — Not known, except at Clon- 

 brock, whence Mr. Dillon reports numerous captures. 



Odontopera bidentata, Clerck — Everywhere numerous. 

 Very dusky brown forms occur with the outer margin external 

 to the elbowed line darkly shaded. Every gradation of paler 

 forms, some tinted with ferruginous, are also to be found, with 

 the markings sometimes strongly and sometimes slightly repre- 

 sented. A very remarkable aberration, with speckled ochreous 

 ground colour and very dark transverse lines and discoidal 

 spots, occurs rarely, which I have not seen in English col- 

 lections. Some specimens have the two transverse lines of the 

 fore wing joined by a longitudinal streak beneath the discoidal 

 spot, formed by the darkening of that portion of the median 

 nervure. 



Crocallis elinguaria, L. — Very widely met with, but not 

 usually in any numbers. It varies somewhat in the tint of the 

 median band, which sometimes is strongly coloured. 



(To be continued.) 



SILK-PRODUCING LEPIDOPTERA. 



By Alfred Wailly, 



(Concluded from vol. xxix. p. 356.) 



European Species. 



Of the six species I am going to name, only one produces silk 

 of any value, that is Lasiocampa otus, found in Turkey, Hungary, 

 and Asia Minor. Saturnia isabella has a thin cocoon of rather 

 fine silk ; the others produce coarse silk. 



Attacus pyri, S. v., Godart {Saturnia pavonia major, Linn.). 

 Central and Southern Europe. The larva feeds on peach, 

 almond, pear, apple, plum, elm, ash, and other trees. In 

 France the larva reaches its full size in August. It forms its 

 cocoon on walls, between branches or at the foot of trees. 



Attacus carpini, S. V., God., Dup., Bdv. {Saturnia pavonia 

 minor, L.) All over Europe, even in the North of England. 

 The larva feeds on elm, hornbeam, birch, willow, blackthorn, 



