768 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BuU. 



" A polythalamous gall on the upper side of the leaf, usually 

 on a vein. About i mm. in diameter. Covered with a dense 

 mass of silky hairs about 0.5 mm. long. Red when young, soon 

 becoming brown. On scarlet oak, Quercus coccinea, and scrub 

 oak, Q. nana." 



Evidently the insect is unknown. The galls have been re- 

 ported from Connecticut by Dr. George Dimmock. 



(For other species of Cynips see pages 403 and 404.) 



Amphibolips cooki Gillette. 



Described in the 27th Report on the Agriculture of Michigan, 

 1888, page 475, reprinted in Psyche, Vol. v, page 220, 1889. 

 Beutenmiiller redescribed this species in Bulletin of the American 

 Museum of Natural History, Vol. xxvi, page 58, 1909, and re- 

 ports it as occurring in Connecticut. His description follows : — 



" Female. Head black, face rugoso-aciculate, the furrows 

 spreading out like a fan from either side of the clypeus ; vertex 

 and sides coarsely rugose. Antennae 13- jointed. Thorax black 

 and rather closely aciculated. Parapsidal grooves indistinct, and 

 scarcely traceable. Anterior parallel lines very indistinct. 

 Pleurae finely and obliquely aciculated. Scutellum coarsely 

 rugose, with the foveae large, deep and shining. Abdomen dark 

 reddish brown to almost black, smooth and shining, and exceed- 

 ingly minutely punctate. Legs dark reddish brown, pubescent; 

 coxae blackish. Wings slightly dusky, hyaline, with a large dark 

 brown patch at the base of the radial cell. Length 5.50 mm. 



" Gall. Issuing from a bud on the terminal twigs of red oak 

 (Quercus rubra) in September and October. Almost globular 

 and usually with a small nipple at the apex. Green and succulent 

 and spotted with red when fresh, and with the outer shell 

 moderately thick. Internally with a central larval cell held in 

 position by radiating fibres. When old the gall becomes brown 

 and shriveled in appearance. Diameter about 16 to 18 mm." 



Amphibolips tinctoriae Ashmead. 



Described in Proceedings U. S. National Museum, Vol. xix, 

 page 125, 1896; redescribed and reported from Connecticut by 

 Beutenmiiller in Bulletin of the American Museum of Natural 

 History, Vol. xxvi, page 59, 1909, as follows : — 



" Female. Head black, rugose. Antennae 13- jointed, dark 

 brown. Thorax striate-rugose more or less distinctly striated; 



