24 Psyche [February 



joints growing shorter, at the apical third becoming nearly quadrate; entirely 

 black. Palpi 5-jointed, black at base and fuscous toward tips. Ocelli well 

 separated, in a triangle, the lateral ones as far from each other as from the 

 eye-margin. Thorax coarsely and closely punctate; mesonotum with quite 

 distinct notauli which converge and fade out posteriorly. Metanotum 

 completely areolated, but with the carinse very weak and indistinct except 

 on the sides; superomedian area large, pentagonal, as long as the petiolar 

 area, basal area very small, longer than wide. All the pleurae strongly and 

 coarsely punctate, the punctures more densely placed on the metapleurae 

 but nowhere confluent. Mesopleura with a smooth space below the root 

 of the posterior wing, bordered below by a row of short strise. 



Thorax black, with only the tegulae and the extreme margin of the pronotum 

 anteriorly ferruginous. Abdomen scarcely longer than the head and thorax 

 together, strongly compressed beyond the third segment. Petiole suddenly 

 constricted at its middle, the basal portion being less than one half as broad 

 as the apical half; its spiracles placed just before the apical third; its surface 

 shining and very faintly striolate laterally behind the splracular elevations; 

 seen from the side it is quite strongly curved apically. Second segment 

 as long as the first, shining, very distinctly aciculate along the sides. Gastro- 

 coeli very distinct. Following segments shining. Ovipositor slightly longer 

 than the abdomen. First segment entirely black; second narrowly ferru- 

 ginous on the apical margin and on the sides behind: third to fifth broadly 

 ferruginous on the sides and behind; sixth and seventh ferruginous with a 

 broad dorsal black line. Legs ferruginous; hind coxae, except base, hind 

 trochanters, hind tibiae, except their inner edges, and four posterior tarsi 

 piceous; posterior femora darkened inwardly below and pale yellow at their 

 extreme tips, the femoral tooth moderately long, the denticulations following 

 it very minute. Wings hyaline; third discoidal cell very much contracted 

 inwardly, its base being scarcely one third the length of the second recurrent 

 nervure. 



Described from a female collected by Mr. S. A. Rohwer on 

 flowers of Antennaria microphylla at Florissant, Col., June 16, 

 1907, and sent me by Professor Cockerell. 



Pristomeridia (?) dubia sp. nov. 



Length 9.5 mm. Fulvous, varied with piceous and with the legs more or 

 less pale testaceous. Head fully three times as broad as thick, strongly 

 emarginate on the vertex. Ocelli very large, in an equilateral triangle, 

 distinctly farther from the eye margin than from each other. Inner margins 

 of eyes parallel, the face a little broader than either eye. Vertex subopaque, 

 microscopically roughened; face more shining, with traces of transverse 

 striations and sparse punctures intermixed; clypeus very convex, its margin 

 rounded on the sides and subtruncate medially; mandibles bidentate, leaving 

 a small space between them and the clypeus when closed. Lateral clypeal 

 fovese distinct, the face with a median convexity between the clypeus and the 

 antennae. Head behind and cheeks shagreened. Antennae 35-jointed, 



