March iSgg.J 



PSYCHE. 



339 



or ferruginous. AVings hyaline or snbliva- 

 line, tlie stigma and veins black or piceous 

 lilack, tlie second recurrent nervin'e intersti- 

 tial with the second transverse cubitus; 

 tegulae black punctate. Abdomen distinctly 

 punctate, rufous, the apical segments 4-6 

 more or less blackish; pygidium distinctly 

 punctate, the lateral carinae, forming tlie 

 pygidial area, somewhat produced at apex so 

 as to make the tip of the abdomen appear 

 tridentate. 



Hab. — Colorado. Carl F. Baker Collec- 

 tion, No. I54f). 



Type, No. 5066, U. S. N. M. 



(5) Plcnoi-tdiis ahdomiimlis n. sp. $. — 

 Length 2.65 mm. Head and thorax black, 

 very finely, closely, microscopically punc- 

 tate and more or less clothed with a sih'er^- 

 pubescence, especially on the face and the 

 mesopleura. Clypeus, mandibles and palpi 

 pale 3ellowish. the former impunctate, with 

 a slight tooth on each side. Antennae dark 

 rufous, the flagellum blackish above towards 

 the base. Legs black, the anterior femora 

 with a white spot at apical third beneath, 

 all tibiae and tarsi pale yellowish, the tibiae 

 more or less brown or even black beneath 

 or within. Wings hyaline, tegulae white : 

 stigma and veins pale brown, the second 

 recurrent nervure joining the petiolated 

 second submarginal cell near its apex before 

 the second transverse cubitus. Abdomen 

 wholly rufous, subopacjue, but not punctate. 



Hab. — Arizona. Carl F. Baker Collec- 

 tion, No. 2123. 



Type, No. 5067, U. S. N. M. 



(7) Pleiiociduf tiiger n. sp. ?. — Length 

 4.6 mm. Wholly black, closely punctate, 

 the head distinctly punctate, the face clothed 

 with a silvery pubescence; there is also a 

 distinct silvery pubescence on the pleura 

 and also more or less on the abdomen but 



not so dense or decided as on the face. 

 Clypeus subsemicircularly produced medi- 

 ally, without a lateral tooth. Mandibles black 

 rufous toward tips. Palpi brownish. Meta- 

 thorax coarsely sculptured with oblique and 

 transverse striations. Wings subhyaline, 

 the tegulae. stigma and veins brow-n-black ; 

 the first recurrent nervure is interstitial 

 or almost with the first transverse cubitus, 

 while the second recurrent joins the second 

 submarginal cell between its middle and 

 apex. Abdomen very finely but distinctly 

 punctate, the pygidiuln smooth, the lateral 

 carinae very delicate. 



Hab. — Colorado. Carl F. Baker Collec- 

 tion No. 2170. 



Type, No. 5068, U. S.N. M. 



(9) Plrnociilnsalbipcs n, s'p. J. — Length 

 3 mm. Black, the head closely, finely punc- 

 tate, opacpie, the face with a dense silvery 

 pile; mandibles except tips, superior mar- 

 gin of pronotum intenupted medially, hind 

 margins of tubercles, tegulae, postscutellum, 

 apical three-fourths of front femora beneath^ 

 apex of middle femora and all tibiae, except 

 beneath, and the tarsi white. Mesonotum 

 shining but finely punctate; metathorax 

 finely rugulose, the meso- and meta-thorax 

 clothed with a silvery pubescence. Wings 

 hyaline, the stigma and veins brown, the 

 first recurrent nervure uniting with tlie 

 cubitus before the first transverse cubitus, 

 the second recurrent joining the second 

 submarginal cell beyond its middle. Abdo- 

 men subcoriaceous, with a silvery pube- 

 scence at apex of segments and more or less 

 laterally. Terminal joint of antennae very 

 large, ovate in outline but subcompressed. 



Hab. — Colorado. Carl F. Baker Collec- 

 tion, No. 2358. 



Type, No. 5069, U. S. N. M. 



