398 HENRY SIIIMER, M. D. 



PcPA. — Color, light orange ; back covered with long spines — quite in contra.st 

 with the pupse of the other species which are all smooth. 



Larva. — Pale yellowish, abdomen covered with spines. 



Egg. — Elongate-ovate, twice as long as wide, pale translucent greonish. 

 Length .008 inch. 



This is an interostins; example amonpj this series of pills, wherein 

 the gall and young differ much more evidently than does the imago. 

 The spiny gall and prominent spiny tubercles covering the body of 

 the young, widely separates it from the preceding species, and yet the 

 imago has much the appearance of that inhabiting the other galls. 

 This is a strong, if not conclusive, argument in favor of the validity 

 of the several species proposed. 

 Ml Carroll, Ills., October, 1869. 



ERRATA. 

 Page 103, line 31, for nastutus read nasutus. 

 128, line 1, for an read and. 

 224, line 41, for vertlcalis read vent rails. 

 280, line 34, for Tears read Tcras. 

 385, line 11, for Chri/psopa read Chrt/sopa. 

 385, lines 21 and 22, for termahis read tcrminaiua. 



