101) 



rases ciistein plauts have not been attacked, even when associated 

 with western, but in one case at least, viz, Rhus toxicodendron, eastern 

 l)lants have been i'xteiisively infested. 



The larvie feed on the tiowers and also to some extent on the leaves. 

 More rarely they feed on the hard fruits and seeds. The following- list 

 of the i)lants upon which the larva had been found prior to its work 

 on Rhus will be of interest in this connection. It has been kindly 

 ])repared for me by Mr. Dewey, who read a short note on the subject 

 at the late meeting of the Botanical Club A. A. A. S. : 



Speciea. 



Order. 



Ptelea aptera RntaceiP 



Ceanot liiis sorodiattis Rhaiunacea; 



DaU-a scciiianiiii LegiiniinosiP 



IjUi)iiiu.s cocciiunis j Leguiuiuosaj 



Purs Ilia f lidiiitata : Rosacea^ 



Priiims (Iniiissa i Rosacea; 



Ril)C8 viliuiui folia j Saxifragacese 



EpiloUiiiui aiifitistifoliura* Onagraceffi 



A rctostaiihylios opi)()sitifolius Ericacoaj 



Eriodii'tyori glutinosuin Hydrophyllaceie . 



Gilia riisbyi Polemoniaceaj ... 



Peiitsti'inim .scciiiiiliriDrus Scrophiilariaceas . 



Audibt-rtia ili-vclaiiilii 



Draco(t'i)haluni ]>arvitlonim 



Salvia ballota;flora 



Labiatie 

 Labiatie 

 Labiatie 



Locality. 



Southern California. 



Southern California. 



Southern California. 



Arizona. 



Arizona. 



Southern California. 



Southern California. 



Eastern Mas.sachusetts. 



Southern Califorina. 



Southern California. 



Arizona. 



Arizona. 



Southern California 



Arizona. 



Arizona. 



* E. angustifolium grow.si iu the west but mo.stly in northern California and Oregon. 



The eggs are laid ui)on the plants or on any surrounding object. 

 They are but slightly attached, bluntly ovoid, 0.3 millimetres wide and 

 0.4 millimetres long. They are steel-gray iu color, the shell white, with 



Fig. 6. Carphoxfra ptelea ria; a, larva from side; h. do, from above; c, .side view of abdominal joint of 

 same; d, tubercle of same; e, pupa; /, do, cremaster; (/, do, abdominal projection— a, 6, rf, enlarged 

 about 6 times ; c, rf,/, still more enlarged (original). 



faint iridescence when emi^ty, and faintly and irregularly reticulate. 

 The duration of the larval period has not been determined. Growth, 

 however, is very slow and the period from the egg to the full larval 



