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Indiana University Studies 
thousands of the galls, parasites being reared however in 
considerable numbers. This is probably a winter generation, 
but the summer generation may also be agamic, in a very 
similar gall. A variety of saltatorius also occurs on Q. stellata 
in the Middle West and thruout the Atlantic States, but 
australis is very probably confined to a limited southern area 
west of the Mississippi. Until we get more locality records 
I cannot suggest whether this area is in Central Texas or 
in more Eastern Texas and the adjacent states. 
Neuro terns saltatorius variety decrescens, new variety 
FEMALE. — Antennae light yellow basally; legs light straw color 
at the joints and on the tarsi; length 0.7 mm., not larger. 
GALL. — Elongate, twice as long as wide, up to 0.7 mm. in length; 
the surface microscopically roughened, irregularly set with a short 
pubescence; brownish or tinged purplish red; on Quercus arizonioa 
(fig. 29). 
EANGE. — Arizona: Bisbee, Prescott. Probably confined to Q. 
arizonica in a southwestern portion of the U.S. and adjacent Mexico. 
TYPES. — Parts of 9 females, 14 pins of galls. Holotype female, 
paratype female, and galls at The American Museum of Natural His- 
tory; paratype females and galls at the U.S. National Museum and in 
the Kinsey collection; paratype galls at the Museum of Comparative 
Zoology and the Philadelphia Academy. Labelled Bisbee, Arizona; Jan- 
uary 15, 1920; Q. arizonica; Kinsey collector. 
This insect is closely related to the other varieties of 
saltatorius, but the galls are so distinct as to suggest that 
decrescens may belong to a distinct species. Until we can 
breed more material from all of the pubescent, separable galls 
of the southwestern evergreen oaks, there will be a question 
as to their specific relations. This is true for the present 
insect and for an undescribed species producing a more spher- 
ical, more pubescent gall on Q. grisea in West Texas. De- 
crescens is one of the three or four smallest Cynipidse known. 
Neuroterus saltatorius variety saltatorius (Edwards) 
“Flea seeds”, in Proc. Calif. Acad. Sci., IV, pp. 250, 265. 
Cynips Saltatonus Edwards (Henry), 1874, Pacific Rural Press, Feb- 
ruary 14, 1874, p. 97, fig. Wright, 1877, Pacific Rural Press, De- 
cember 8, 1877, p. 361. 
Cynips saltitans Dodge, 1876, Field and Forest, II, p. 56, fig. on p. 53. 
Cynips saltatorius Riley, 1876, Amer. Nat., X, p. 218; 1877 Trans. St. 
Louis Acad. Sci., Ill, p. CXCI; 1883, Proc. U.S. Nat. Mus., V, p. 
