less falcate, such as lUigerellus (to which Haworth gave the name of 

 faJciformis) and chceroplajJlellus, whereas in others, as pontificellus, 

 ochreomaciilellus, &c., the hind margin is more or less rounded. Now 

 iniquellus belongs to the latter, insecurellus rather to the former sec- 

 tion ; at any rate, the hind margin of the cilia from the apex appears 

 straight and not at all rounded at the apex as in iniquellus. 



In insecurellus the basal portion of the anterior wings seems 

 decidedly paler than in iniqriellus and contains three black dots (not 

 mentioned in my previous descriptions) placed thus : one on the sub- 

 costal nervure, one beneath it on the fold, and the third and smallest 

 one placed rather more posteriorly nearly midway between the other 

 two, I believe I can trace these dots more or less distinctly in all my 

 specimens of insecurellus, whereas in the bred specimens of iniquellus 

 I see no symptoms of them. 



Herrich-Schiiffer's figure of Ch. dentosellus shows no indication 

 of these three black dots ; moreover, he says it occurs near Vienna 

 in May and June, a period of appearance which would ill accord with 

 insecurellus, so that on these two accounts I would prefer for the 

 present to consider detitosellus as distinct from insecurellus. 



The larva of iniquellus being a seed-feeder must be much less 

 exposed to observation than the leaf -feeding larvae of this genus. In 

 localities where Heracleum spliondylium grows commonly by the road 

 sides, and Chauliodus cluerophyllellus occurs, the presence of the larvae 

 of this species as revealed by the browned leaves of the Heracleum 

 becomes quite a featui'e in the landscape. 



As the larva of insecurellus has hitherto escaped observation, I 

 strongly suspect that it must be a seed-feeder, and very probably, as 

 with iniquellus, the larvae which feed up and pupate in autumn do not 

 appear in the perfect state till the end of July and beginning of 

 August. 



In Dr. E-ossler's last work on the Lepidoptera (Die Schuppen- 

 fliigler) of Wiesbaden he has a notice of CliauUodus iniquellus, at p. 

 318, which is very suggestive. "The imago is not scarce in woods 

 near Mombach, in July, on and around the flowers of Peucedanum 

 oreoselinum. If we wish to breed it, all we have to do is to carry home 

 the umbels of ripe seed in October. Afterwards we shall find amongst 

 them on the ground numerous small pupae without any cocoons. Any 

 traces of the larvae in the seeds or stems have not been observed." 



I must here repeat my best thanks to Monsieur Constant for his 

 most acceptable present of pupae of Chauliodus iniquellus, the new 

 notions thus obtained seem now to have brought us within measure- 

 able distance of the diaiiovery of the larva of Chauliodus insecurellus. 



