Kinsey: The Genus Neuroterus 
119 
Di\ Patterson has secured only 3 males out of 94 insects he 
has bred, and he is convinced that these males are about 
functionless, the remnants of a more primitive, bisexual con- 
dition in this generation which is now agamic. These observa- 
tions are of great importance in connection with our under- 
standing of the evolution of agamy and heterogeny, and it 
will be very interesting to have the details of Dr. Patterson’s 
observations published later. This same student has found 
a similar condition in the agamic generation of N. contortus, 
reported in this paper. 
Neuroterus rileyi variety rileyi 
agamic form 
—Riley, 1880, Amer. Ent., Ill, p. 153, fig. 56. 
Cynips q. rileyi Bassett, 1881, Amer. Nat., XV., p. 149. 
Neuroterus Rileyi Mayr, 1881, Gen. Gallenbew. Cynip., p. 37. Ash- 
mead, 1885, Trans. Amer. Ent. Soc., XII, pp. 296, 304; 1887, Trans. 
Amer. Ent. Soc., XIV, p. 132. Dalla Torre, 1893, Cat. Hymen., 
II, p. 46. Dalla Torre and Kieffer, 1902, Gen. Ins. Hlmen. Cynip., 
p. 51. Cook, 1905, 29th Rpt. Dpt. Geol. and Nat. Res. Ind., p. 837, 
fig. 30. 
Cynips {Neuroterus) rileyii Packard, 1890, 5th Rpt. U.S. Ent. Comm., 
p. 114. 
Neuroterus rileyi Ashmead in Packard, 1890, 5th Rpt. U. S. Ent. Comm, 
pp. 107, 110. Cook, 1904, Proc. Iowa Acad. Sci., p. 225. Beuten- 
muller, 1910, Bull. Amer. Mus. Nat. Hist., XXVIII, p. 120, pi. XI, 
fig. 11. Thompson, 1915, Amer. Ins. Galls* pp. 7, 41 (in part only). 
Felt, 1918, N.Y. State Mus. Bull., 200 , p. 61. fig. 107 (11). Wells, 
1921, Bot. Gaz., LXXI, p. 377, pi. XXII, fig. 5. 
Cynips rileyi Cresson, 1923, Trans. Amer. Ent. Soc., XLVIII, p. 202. 
FEMALE. — Antennas basally dull, dark yellow; the thorax laterally 
darker piceous; the abdomen black; the legs brown with yellowish joints; 
the areolet moderately large, and the length 2.0 mm. 
GALL. — As described for the species; large, the swelling elevated 
above the stem to 3.0 mm. On older twigs of Quercus pnnoides. 
RANGE. — Ohio: North Bend (Riley in Bassett). Indiana: (Cook). 
Illinois: (Beutenmuller) . Missouri: Cadet (Riley in Packard). Iowa; 
(Cook). Probably confined to a region of the Middle West north of 
Oklahoma. 
TYPES. — Holotype female, paratype females, and galls at the Phil- 
adelphia Academy. From North Bend, Ohio; Quercus prinoides; J.A.W. 
collector, thru C. V. Riley. 
I have seen a paratype female of this variety. It disagrees 
with the original description in not being over 2.0 mm. in 
length. I have examined galls from several localities. 
