Vol. XXI] ENTOMOLOGICAL NEWS. 



ish ; the fore femur bears a prominent projection or tubercle near the 

 distal end. (PI. VIII, fig. 4). Abdomen with no dorsal tubercles. Corni- 

 cles concolorous with the abdomen, small, broadest at the base and 

 gradually narrowing towards the apex, the opening comparatively 

 small and the tip more or less rounded; the length about twice the 

 breadth. (PI. VIII, fig. 5). This form of cornicles, unknown to me in 

 any other aphid, is a gradation between those of Drepanaphis and Cal- 

 lipterus. Style callipterus-like, it being knobbed but only slightly con- 

 stricted near the base. (PI. VIII, fig. 6). The anal plate is bifid. (PI. 

 VIII, fig. 7). 



Measurements (from specimens mounted in balsam) Length of 

 body, 0.98-1.236, av., 1.1124 mm.; 0.3272-0.436, av., 0.378 mm.; length 

 of wing, 1.78-1.999, av., 1.898 mm.; width, 0.6545-0.7272, av., 0.6908 mm.; 

 antenna I, 0.0815; II, 0.0326; III, 0.6094-0.7072, av., 0.6452; IV, 0.3912- 

 0.5053, av., 0.4433; V, 0.4238-0.5605, av., 0.489; VI, base, 0.0978-0.1304, 

 av., 0.1157; VI, filament, 1.4544-1.78, av., 1.5922; average, total, 3-3995 

 mm. ; style, av., 0.065 mm. ; cornicles, av., 0.048 mm. ; hind tarsus, av., 

 0.927 mm. 



Described from 24 individuals collected at Glencoe, 111., 

 September 2, 1909, mounted in balsam on 8 slides. Types 

 preserved in the Illinois State Laboratory of Natural History 

 as Ace. No. 43,267; in the U. S. National Museum, and in the 

 writer's collection. 



Habitat. Glencoe, 111., and Mine Lamotte, Mo. 



Pupa entirely pale yellowish or greenish yellow, and bearing 

 capitate hairs. 



The following notes were made by Mr. Monell : 



"189 424x. Callipterus on maple. On small maple (A. 

 nigra ?) growing on Mine creek, about 500 yards from the 

 furnaces of Mine la Motte, Mo., August 12, 1890. Abundant 

 living sporadic, Callipterus fashion. Head and thorax brown- 

 ish or fuscous. Abdomen pale yellowish or usual Callipterus 

 color. One winged had head and thorax like abdomen, but 

 this one probably just acquired wings. Apterous is entirely 

 pale greenish yellow. 



"Examined slide 424x on October 26, 1908. The wings are 

 now hyaline, not shaded, and the stigmal vein is still plainly 

 seen its entire length. No tubercles on dorsum. Pupa with 

 funnel-mouthed hairs on dorsum. Antennae of winged are 



