130 NEUEOTEEUS LEKTICULAEIS. 



terus, but through immaturity some of the specimens 

 are brownish. 



The galls of the agamic broods are flat, lenticular 

 or button-shaped, and generally covered with hairs, 

 and always found on the leaves, frequently in large 

 numbers ; the galls of the sexual summer brood are 

 pea-shaped, soft, and succulent, as in baccarum and 

 tricolor, sunk in the leaf, as in vesicatrix, or small and 

 hard, as in albipes. 



The genus is well marked by the absence of a suture 

 between the scutellum and mesonotum. It contains 

 eleven European species, and various species are known 

 from North America. 



A. Para/psidal furroivs distinct. 



1. Neueoteeus lenticulaeis. 



PI. Ill, figs. 1 (lenticularis) and 1 a (baccarum) ; PI. 

 XVI, figs. 4 (lenticularis) and 4 a (baccarum). 



Cynips lenticularis, Olivier, Ent. Meth., vi, 281. 

 Neuroterus Malpighii, Htg., Germs. Zeits., ii, 192 ; Tasch., 

 / Hym. Deut., 137 ; Thorns., Opusc, 



788, 21. 

 Neuroterus lenticularis, Adler, B. E. Z., xxi, 231 ; Zeits. wiss. 



Zool., 1880, 156, pi. x, tig. 1 ; Licht. 



Cyn., 7, pi. i, fig. 1 ; Mayr, Europ. 



Cyn., 39 ; Eichengallen, 45, pi. vi, 



fig. 63; Schenck, Beitrage, 67 and 



106. 

 Cynips quercus -baccarum, Linn., S. N., ii, 917. 

 Spathegaster interruptor, Htg., 1. c., iii, 341. 



— baccarum, Htg., 1. c. ; Tasch., Hym. Deut., 135 ; 



Marsh, E. M. M., iv, 125 and 225 ; 



Thorns., Opusc., 789 ; Zeits. wiss. 



Zool., 1880, 160, pi. x, fig. 1 a; Licht., 



Cyn., 13, pi. i, fig. 1 a; Mayr, Europ. 



Cyn., 38 ; Eichengallen, 49, pi. vi, fig. 



70 ; Schenck, Beitrage, 84 and 107. 

 For galls, see also Malpighi, Opera Omnia, pi. vii, fig. 15 ; 

 Reaumur, Ins., iii, pi. xlii, figs. 8 — 10 ; Smith, Trans. Ent. 

 Soc, 1839; Proa, p. 43. 



Agamic Form. — Black, shining ; the antennas brownish, the basal two 

 or three joints of the flagellum yellowish ; legs yellowish, more or less 

 of the coxse and base of femora blackish ; wings hyaline, the first 



