OP WASHINGTON. VOLUME XIV, 1912. 155 



surfaces almost without sculpture, set with a few short, weak spines arising 

 from barely perceptible elevations; postocular bristles alone prominent, 

 about one and one-third times as long as eyes, dilated at tip; postocellar 

 bristles minute. Eyes small, retracted, but little more than one-fifth as 

 long as head, nearly circular as seen from above. Ocelli of moderate size; 

 median ocellus situated on dorsum of apex of produced vertex, slightly in 

 advance of anterior margin of eyes; posterior ocelli opposite anterior third 

 of eyes, nearly touching their inner margins, and slightly more distant from 

 each other than from the anterior ocellus. Antennae just one and two-thirds 

 times as long as head, more slender than usual; segment 1 slightly broader 

 than long; 2 about 1.6 times as long as wide; 3 clavate, twice as long as 

 wide, broader at apical third, pedicel narrow, not more than one-fifth great- 

 est width of segment; 4-7 slightly more than twice as long as wide, truncate- 

 fusiform, with short pedicels; 8 three times as long as wide, oblong-conical, 

 slightly narrowed at base; antennae nearly uniform blackish gray, segments 

 1 and 2 darker; 3 paler in basal two-thirds. Mouth cone wider than long, 

 reaching posterior margin of prosternum; tip of labrum just attaining tip 

 of broadly rounded labium. 



Prothorax about half as long as head and (inclusive of coxse) about two 

 and one-third times as wide as long; pronotum non-sculptured, without 

 median thickening; anterior and posterior margins concentric; usual bris- 

 tles all present, very slender, subequal in length to postoculars, slightly 

 dilated at tip. Pterothorax slightly wider than prothorax, sides straight, 

 converging posteriorly. Wings present (not spread in the single example), 

 sparsely fringed. Legs rather slender; fore tarsi unarmed. 



Abdomen moderately slender, only slightly broader than pterothorax, 

 broadest at about segment 3, thence tapering roundly to base of tube; 

 tube evenly tapering, slightly more than half as long as head and less than 

 twice as long as basal width, which is more than twice the apical. Lateral 

 bristles on segment 9 fully as long as tube, slightly longer than terminal 

 bristles. 



Measurements of holotype: Length 1.03 mm.; head, length 0.192 mm., 

 width 0.156 mm.; prothorax, length 0.100 mm., width (inclusive of coxa?) 

 0.238 mm.; pterothorax, width 0.264 mm.; abdomen, width 0.282 mm.; 

 tube, length 0.108 mm., width at base 0.062 mm., at apex 0.027 mm. An- 

 tennal segments: 1, 27 M ; 2, 42 M; 3, 48 n; 4, 45 M; 5, 47 /u; 6, 44 ; 7, 41 A<; 

 8, 27 M; total length of antenna, 0.32 mm., width at segment 4, 0.023 mm. 



Described from 1 female taken in sweepings at Grand Tower 

 Illinois, July 12, 1909, by Mr. Charles A. Hart. 



This species is abundantly distinguished by its small size, 

 the form of the antennal segments, and the long, blunt, post- 

 ocular and prothoracic bristles. In several respects it shows 

 an interesting approach to the genus Phlccolhrips. 



