116 Psyche [August 



Glyptothrips gen. nov. 



(;'/UTrro?, carved; Ojinf', a wood worm.) 



Body very broad; dorsal surface reticulate. Antennae stout, seven-segmented; 

 intermediate segments with long pedicels; spines and sense cones long, slender, 

 subparallel to axis of antenna. Eyes subpedicellate, coarsely facetted, separated 

 from gense and dorsum of head by a deep furrow. Anterior ocellus overhanging, 

 directed forwards; posterior ocelli directed laterally and protected by the over- 

 hanging edge of the vertex. Mouth cone much shorter than its basal width; 

 labrum not surpassing tip of broadly rounded labium; palpi very short, stout. 

 Ptero thorax transverse (as wide as length of antenna) and much broader than pro- 

 thorax. Wings of equal width throughout, not closely fringed. Tube long and 

 heavy. 



Tijye. — Glyptothrips jiavescens sp. nov. 



Glyptothrips is one of the most sharply characterized genera of 

 the Phloeothripida?. Together with the monotypic genera Poly- 

 phemothrips and Allothrips, — also confined to the Americas, it is 

 remarkable for its seven-segmented antennae. This condition is 

 approached in representatives of the genera Trichothrips, Cryp- 

 tothrips, Neothrips, Kladothrips,^ and Onychothrips, but here the 

 fusion of the two apical segments is incomplete and a more or less 

 distinct suture is always visible. Although the antennal struc- 

 ture suggests Allothrips very, strongly, the genus above described 

 "is probably closely related to Eurythrips Hinds, and should be 

 placed after it in a linear arrangement of the genera. 



Pactothrips flavescens sp. nov. (Plate 9, Figs, a, b, and c.) 



Female. — ^Length about 1.3 mm. Color bright brownish yellow, with thorax, 

 vertex, and sides of head darker, due to maroon pigmentation; legs, antennal seg- 

 ments 3-7, and tip of tube more or less darkened with blackish. Dorsal surface 

 reticulate. 



Head about one and one sixth times as long as greatest width, deeply reticulate 

 above, more finely beneath; vertex elevated, its lateral margins shelf-like and 

 slightly protecting the posterior ocelli; its front margin concave and bearing the 

 anterior ocellus, which is directed forwards; cheeks somewhat rounded, converg- 

 ing slightly to base and very abruptly to posterior margins of eyes, and set with a 

 few, short, anteriorly-directed spines; postocular bristles short, clavate, situated 

 well towards sides of head. Eyes small, subglobose, less than one fourth as long 

 as head, subpedicellate, coarsely facetted. Antennte twice as long as head, stout. 



