92 CALIFORNIA ACADEMY OF SCIENCES. 



tation, but there in great profusion on the Madrono, an Ar- 

 butus, probably identical with our A. menziesii. 



As these webs can be made very useful for certain pur- 

 poses, several members of the Academy tried to obtain 

 living insects, which could be easily acclimatized in our 

 madrono forests, or into plantations where it could be more 

 easily protected. One result of these efforts was to prove 

 that it was not quite as common in the fastnesses of the 

 Mexican Sierras as it had appeared. The evergreen foliage 

 seemed to preserve the webs for an indetinite time, and all 

 our correspondents agreed that they were obliged to exam- 

 ine many of them before they found one inhabited. 



The few which were sent always arrived with all their in- 

 habitants dead, and so badly shattered that they could not be 

 used as specimens for the entomological cabinet, but not so 

 completel}^ that it was impossible to classify them generic- 

 ally, and their nervation showed that they belonged to a 

 third species of the genus NeopJiasia. 



An invoice which I received from Cozihuiriachic, which 

 probably came from some mountain ridge of that neighbor- 

 hood, contained webs full of Terlootii developed in transit, 

 and smothered by the close packing, proving that species 

 had the same larval habit and food plant as the inhabitants 

 of the former webs. 



There were now, including llenapia, three species of the 

 same type, two of them connected besides by their pecidiar 

 method of life in the larval state. 



In Kirby's Catalogue of Diurnal Lepidoptera iS found a 

 genus Euclieira with a single species, E. socialis, described 

 by -Westwood in Trans. Entom. Soc. i, 44 (1836), and cred- 

 ited to Mexico. The volume of the Transactions is inac- 

 cessible to me, but the specific name socialis caused a vague 

 suspicion that the genus was identical with NeopJiasia, a 

 supposition which has been confirmed by an article from 



