OF WASHINGTON, VOLUME XVIII, 1916 7 



Mimosa biuncinata, M. borealis, M. texana and M. fragrans and 

 Acacia amentacea in Texas and Arizona. 



Apion umboniferum Fall breeds in the berries of Viburnum 

 alnifolium in Texas. 



Apion xanthoxyli Linell breeds in the seeds of Xanthoxyhttn 

 pterota in South Texas. 



Apion proclive LeConte breeds in the pods of Lupinus arbor ea 

 in California. 



Apion rostrum Say breeds in the pods of Baptisia leucantha and 

 B. tinctoria. 



Apion varicorne Smith breeds in the flower heads of Parosdu 

 aurea in Texas and Oklahoma. 



Apion nasutum Fall breeds in the stems of a leguminous plant 

 in Texas. 



Apion subornatum Fall breeds in the pods of Acacia amentacea 

 and A. roemeriana in Texas. 



Apion decoloratum Fall breeds in the pods of Meibomia pani- 

 culata, M. grandi flora and Gnaphalium obtusifolium. 



Apion solutum Fall breeds in the stems of Sphaeralcea angusti- 

 folia in South Texas. 



Apion graciliforme Fall breeds in the stems of Kuhnistera 

 obovata in Texas. 



Apion aculeatum Fall breeds in the flower heads of huisache 

 (Vachellia farnesiana) and of a Mimosa. 



Among these fourteen species of Apion are stem, root, flower, 

 fruit and seed weevils. These will ultimately be placed in several 

 very distinct genera. All species of Apion pupate in the larval 

 cell. 



Very little is yet known of the habits of our otiorhynchid 

 weevils in this country. Notes on four species are presented 

 herewith. 



Compsus auricephalus Say like many other otiorhynchid 

 weevils related to it, lays its eggs in a mass of gummy substance 

 on leaves and folds a portion of the leaf over them so that they 

 are perfectly concealed. It has been found ovipositing in great 

 numbers on cotton in south Texas. The eggs hatch in seven or 

 eight days and the larvae enter the ground to feed on the roots of 

 plants. 



Achrastenus griseus Horn lays its eggs in clusters on fruit tree 

 leaves. 



Aphrastus unicolor Horn lays its eggs in clusters on cotton and 

 other plants. 



Pandeleteius cinereus Horn breeds in the stems of mistletoe 

 (Phoradendron flavescens) in Texas. The adults mature in the 

 spring. The entire development takes place in the larval cell. 



