144 W. H. ASHMEAD. 



This interesting little insect is described from several specimens 

 bred in May, 1886. 



27. Dryoplianta ciiieroje n. sp. — (The Upland-willow Oak Spangle Gall.) 

 Galls. — Small, seniisplierical galls, sessile on the under surface of the leaves; 



internnally there is a loose kernel which moves freely about. 



Gall-fly. — Length .07 inch. Differs from Dryophanta palustris O. S., Dryophanta 

 laurifoUie Ashm., and Dryophanta aqaticx Ashm., only in its much smaller size, 

 in having pale brown antennje. and the posterior co:cfe black ; while the color 

 of the legs are pale yellow, there is a faint brownish blotch on basal third of 

 posterior tibiie not apparent in any of the other species. 



Described from several specimens bred in May, 1886. 



While the fly of this species might easily be confounded with those 

 of the others, the gall easily separates it ; it does not j^roject above 

 the upper surface of the leaf as do the other species. Very rare. 



Galls on Water Oak (Quercus aquatica). 



To the galls already described as occurring on this oak add the 

 following : 



28. Callirhytis aqnaticse n. sp. 



Gall. — A hard knotty swelling at base of small twigs and branches, from .35 

 to .75 inch long by from .30 to .40 inch in diameter. 



Gall-fly. — 9 • Length .08 inch. Color entirely black, excepting tips of tibiae, 

 tarsi, and antennse, which are somewhat reddish. Head and thorax finely 

 rugo.so-punctate, parap.sidal grooves distinct, two short median grooves ante- 

 riorly and another short groove near the base of the wings. Abdomen polished, 

 short, broader vertically than long, subglobose, truncate posteriorly ; ventral 

 valve short, obtuse. Wings hyaline, veins brownish. 



Described from one specimen cut out of a gall in March. 



Galls on Catesbrfs Oak (Quercus catesbsei). 



29. Andrictis iutuseatiis n. sp. 



Gall. — A globular, fleshy gall, densely covered with yellow wool ; diameter .23 

 to .25 inch. It is attached by a slight point to the upper surface of the leaf and 

 when mature is in reality nothing but a hard, tough, larval cell, covered with 

 wool ; the wooly covering is easily detached. It is monothalamous ; occasionally 

 several galls occiir together on the leaf compressing one another into odd shapes 

 but the galls fall to the ground, separate and renew their globular form, and the 

 fly reaches maturity in the damp earth. This gall has been known to me for 

 several years, but until its habits were discovered my seve-tal efibrts to rear the 

 fly from it were unsuccessful. 



Gall-fly. — 9- Length .10 inch. Color: head, thorax and legs brown. Au- 

 tennse towards tip and posterior tibiae, infuscated ; ocelli and eyes dark. Head 

 and thorax finely confluently punctate ; parapsidal grooves sharply defined, the 

 two anterior median grooves extend to the middle of mesothorax, polished ; an- 



