ANDEICUS OOLLAEIS. 89 



Gall. — Found on adventitious buds in May and 

 June. Length hardly 2 mm. Oval, sometimes nar- 

 rowed at the apex ; base smooth, green when young, 

 greenish- white or brownish when older. Sometimes 

 it is found on the apex of young leaves. 



Widely distributed. 



Continental distribution: Sweden, Germany, Austria. 



8. ANDEICUS OOLLAEIS. 



PI. V, figs. 5 {curvator) and 5 a (collaris) ; PI. XI Y, 

 figs. 4 {curvator), 4 a, b (collaris) ; Pi. XIX, fig. 2. 



Ctjnips collaris, Htg., Germs. Zeits., ii, 190 ; Schenck, Nass. 

 Cyn., 54, 61, and 115. 



Aphilothrix collaris, Mayr, Eichengallen, 25, 32, pi. iv, fig. 32 ; 

 Adler. Zeits. wiss. Zool., xxxv, 177, pi. x, 

 fig. 9; Licht. Cyn., 35, fig. 9; Fitch, 

 Trans. Essex Field Club, ii, 137, fig. 27- 



Andricus collaris, Mayr, Europ. Cyn., 22. 



Cynips curvator, Thorns., Opusc. 785. 



Andricus curvator, Htg., Germs. Zeits., ii, 191 ; Schenek, Nass. 

 Cyn., 74, 76, and 109; Mayr, Eichen- 

 gallen, 40, pi. v, fig. 56 ; Adler, Zeits. 

 wiss. Zool., xxxv, 178, pi. x, fig. 9 a ; 

 Licht. Cyn., 36, pi. i, fig. 9 a ; Mayr, 

 Europ. Cyn., 20; Fitch, Trans. Essex 

 Field Club, 140, fig. 33. 



Black, shining, the face finely rugose ; the mouth, the five to six basal 

 joints of the flagellum of the antennae, the pronotum, the base of themeso- 

 notum, the sides, and two narrow lines on the black part, the scutellum, 

 the sides and ventral surface of the abdomen, and legs (the coxse black, 

 reddish at the apex) reddish ; the ]egs of a clearer and more yellowish 

 tinge than the rest of the body. Abdomen very sparsely pilose at the 

 base. Wings hyaline. Agamic $ . 



Length 3*3 — 5 mm. 



What I have called " black " may be brownish or 

 brownish-black, and the quantity of red on the thorax 

 and abdomen may be more or less than what I have 

 noted in my bred specimens described above — some 

 specimens, in fact, being very light and others very 

 dark coloured. A specimen of the very light type of 

 coloration is figured on PI. XIY, fig. 4b. 



