316 AMERICAN HYMENOPTERA. 



aborted, and the galls that mature (many are destroyed by para- 

 sites) fall to the ground. The larvae at this time are nearly or quite 

 grown, and early in the Spring following, a part of them have be- 

 come imagos. Another part remain in the larval state another 

 year, while a few remain in this condition still longer, and, as sug- 

 gested by Professor Riley, may develope the third year. I know 

 one other of our agamous species that makes the continuance of the 

 race sure by similar means. 



Gall-fly. — Head, antennas, thorax and legs dark red. Head very broad and 

 curved back, almost crescent shaped, very finely rugose. Antenna; thirteen 

 jointed, first dark, heavy, second very small, globose, and only one-third as long 

 as the first, third not heavy, nor quite as long as the first two, fourth to twelfth 

 gradually shorter, thirteenth long and tapering to a point. Thorax finely punc- 

 tate. Parapsides very fine, as are also the two intermediate lines. These extend 

 a little more than half way to the scutellum, and are posteriorly, very slightly 

 divergent. Lines over the base of the wings distinct, though minute hairs some- 

 what obscure the lines and punctation of the thorax. Scutellum roundish, 

 small, faintly rugose and more hairy than the thorax ; fovaj oval, shining, oblique 

 and separated by a broad carina. Abdomen black, polished, first segment very 

 large, its sides sparsely covered anteriorly with small white hairs. Legs paler 

 red than the thorax. Wings hyaline, veins not large, the subcostal and two 

 transverse smoky brownish red, others nearly or quite colorless. Radial area 

 long. Areolet obsolete, cubitus faint and short. Body .14, antenna; .12, wings 18. 



Amlricus obtusilobse n. sp. 



Gall-fly. Female. — Head, antennas and legs a clear yellowish red. Antenna; 

 thirteen jointed, first joint slender, club shaped, second one-half as long, and the 

 third equal to the first, following gradually shorter to the thirteenth, which is 

 twice as long as the twelfth. Head broader than the. thorax. Eyes and ocelli 

 black. Vertex evenly and finely wrinkled or punctate. Thorax — the two med- 

 ian and parallel lines are faint and extend half way to the scutellum. The 

 parapsides present but indistinct. General surface of the mesonotuni punctate. 

 Scutellum finely rugose; fova; small, shallow and smooth. Abdomen polished 

 and, posteriorly, darker than the thorax. The tarsi of the posterior pair of legs 

 are also darker than the others. Wings not quite hyaline, veins faint. Radial 

 area open. Areolet wholly wanting, cubitus slender, but reaching two-thirds the 

 distance to the first transverse vein. Body .10, antennas .06, wings .08. 



Galls unknown. The two individuals I have being found in the 

 breeding box with my A. pruinosus. I do not recall a species that 

 very closely resembles this in color. It is much paler and smaller 

 than A. ? operator O. S. 



Andricus Kingi n. sp. 



Gall. — A broad, ovate, saucer-shaped base terminating in a small, 

 slender cone with incurved sides. The point of the cone is open 

 down to the flattened larval cell which lies close to the base of the 



