154 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Abdomen stout, heavy, about 1.4 times as broad as pterothorax, widest 

 at about segment 3, thence tapering roundly to base of tube. Tube slightly 

 more than 0.6 as long as head, slightly constricted just before apex, 

 which is about half as wide as base. Lateral bristles on segment 9 as long 

 as tube; terminal bristles about three-fourths as long as tube. 



Measurements of holotype: Length 2.17 mm.; head, length 0.396 mm., 

 width 0.240 mm.; prothorax, length along median dorsal line 0.156 mm., 

 width (inclusive of coxae) 0.396 mm.; pterothorax, width 0.420 mm.; ab- 

 domen, width 0.600 mm.; tube, length 0.248 mm., width at base 0.099 mm., 

 at apex 0.051 mm. Antennal segments: 1, 48 /u; 2, 75 n; 3, 102 n; 4, 97 n', 

 5, 88 n; 6, 78 M; 7, 55 /*; 8, 48 ; total length of antenna, 0.59mm., widthat 

 segment 4, 0.042 mm. 



Male (forma brachyptera)-- Length about 1.68mm. Color and general 

 structure nearly as in female. Head distinctly shorter than combined 

 lengths of segments 1-5 of antennae. Pronotum with front margin evenly 

 rounded, no median chitinous thickening; fore femora slightly less than 

 0.6 as long as head; fore tarsi armed with a large, stout tooth. 



Measurements of allotype : Length 1.68 mm.; head, length 0.328 mm., 

 width 0.200 mm.; prothorax, length along median dorsal line 0.150 mm., 

 width (inclusive of coxae) 0.352 mm.; pterothorax, width 0.384 mm.; ab- 

 domen, width 0.504 mm; tube, length 0.210 mm., width at base 0.084 mm., 

 at apex 0.045 mm. Antennal segments: 1, 39 n; 2, 63 n; 3, 85 n\ 4, 82 n; 

 5, 79 n; 6, 65 M; 7, 48 p.; 8, 44 /u; total length of antenna, 0.51 mm., width at 

 segment 4, 0.038. 



Described from 2 females and 1 male, all from Illinois, as 

 follows: Carbondale, September 21, 1908, 1 female and 1 

 male, on peach branch, L. M. Smith; Parker, July 14, 1909, 

 1 female, on hickory branch, C. A. Hart. 



Though resembling C. carbonari tts in the elongate head 

 and the arrangement of the cephalic and prothoracic bristles, 

 this species is of quite different appearance and much smaller 

 size. In carboiiarius, of which the female is unknown, the fore 

 femora of the winged male are about 0.8 as long as the head, 

 which is about equal to the length of the first five antennal 

 segments; in the present species the femora of the male are 

 less than 0.6 as long as the head, and the latter is distinctly 

 shorter than the first five antennal segments. 

 Gryptothrips exiguus, new species. (PI. vin, fig. 4.) 



Female (forma macroptera}. Length about 1 mm. General color dark 

 luteous, with abdomen blackish brown; internal pigment irregular, maroon 

 in color; head and thorax darkened at sides with blackish; legs concolorous 

 with lighter portions of body, tarsi and apical portion of tibiae dull yellow; 

 antennae nearly uniform gray. 



Head about 1.25 times as long as wide, sides straight and nearly parallel; 

 vertex produced, slightly overhanging, bluntly conical; lateral and dorsal 



