38 Psyche [Apn'i 



2 mm. above twig surface. Surface of raised portion coarsely 

 striate clue to splitting of original epidermis; abundant locally, 

 Raleigh, IST. C. Types in collection of the writer. 



Castanea. 

 Cecidomyia sp. Cecidium nov. Fig. 7. 



7. On Castanea puniila (L) Mill., leaf; prosoplasma, asym- 

 metric up-walled type; arises from vein (under side) and curls 

 in toward leaf forming pocket, blade above gall pressed upward 

 forming umbo as seen from alwve, gall flattened parallel to blade, 

 4 mm, long, 2 mm. wide, surface same as leaf or lighter; chamber 

 ovoid, wall thick especially on vein side; abundant on certain 

 trees, Carolina Beach, N. C. Types in collection of writer. 



This gall is of especial interest for the reason that it is a strik- 

 ing asymmetric variant of the up-walled type. It appears to be 

 produced by an upgrowth from the vein which instead of being 

 equal on all sides of the larva is distinctly one-sided, resulting in 

 the strongly curled or revolute structure observed. I know of no 

 other gall like it in this respect; it constitutes a new fundamental 

 gall type. 



A relatively large itonidid larva was constantly present in the 

 galls. 



Chenopodium. 

 Cecidozoon undetermined. Cecidium nov. Fig. 8. 



8. On Chenopolium ambrosiodes var, anthelminticum (L) Gray, 

 stem gall; kataplasma; simple fusiform enlargement of the stem, 

 1-1.5 cm. long, color and texture same as stem, single chamber 

 elongate, relatively large with irregularly pitted walls; not com- 

 mon, Toledo, 0. Types in the collection of the writer. 



Cvnila. 

 Cecidomyia sp. ( ?) Cecidium nov. Fig. 9. 



9. On Cunila origanooides (L) Britt. (Dittany), bud gall, on 

 ends of aborted upper branches; prosoplasma, up-walled type; sub- 

 spherical, tipped with short point, 2-3.5 mm. dia., green at first 

 early becoming bluish-])urple, surface glandular same as leaves, 

 sessile on branch end, invested below by an involucre of a few in- 

 conspicuous, foliaceous bracts; chamber large, same shape as gall, 



