and in the " Lepidopteres de France," M. Duponchel states 

 that he adopts my genus, and has given it the name of 



Odontia dentalis, 

 of which insect the following is a description. 



Pale ochreous, superior wings with marks of a brown 



colour more or less dusky, leaving a few oblique rays on 



the costa towards the apex, with a pale spot near the 



posterior angle, a very irregular oblique line across the 



middle to the apex, forming 7 pale acute points and den- 



ticulations, sometimes with a brown semicircular line on 



the disc, and a semilunate one nearer the base : cilia 



bearing 8 blackish rays, alternating with 7 white ones on 



the posterior margin, which are formed by the nervures: 



abdomen and hinder wings fuscous, paler at the base. 



I should long since have published this interesting insect, 



which was said to have only rudimentary or no maxillae, but 



I was unable to obtain the loan of an example to figure, and 



I am now indebted to Mr. Bentley, whose specimen was 



purchased at the late Mr. Haworth's sale, and he merely stated 



in his Lep. Brit., that it was very uncommon in England ; it 



is however added in the ' Illustrations,' that Mr. Haworth's 



insect was captured near London by Mr. Knight, and that 



another was taken several years since in Devonshire, not far 



from Tavistock. 



As the plant on which the Caterpillar feeds is very abun- 

 dant in many parts of England, it is possible that the O. deiitalis 

 may not be so scarce as it is supposed to be. M. Duponchel 

 says that the Caterpillar lives hi the stalks of the Echium vul- 

 gare, out of which it only comes for the purpose of changing 

 into a chrysalis amongst the leaves of that plant. 



The moth appears twice in the year, at the end of June and 

 beginning of August, and is not rare in the environs of Paris; 

 the specimen dissected I purchased at Montpellier. 

 The Plant is Echium vulgar e (Common Viper-grass). 



