OF WASHINGTON, VOLUME XIV, 1912. 145 



and entitles them to rank as a distinct subgenus, which may 

 be distinguished from Phlccothrips spp. as follows : 



Subgenus HOPLANDROTHRIPS nov. 



Dorsal surface, at least of pronotum, not deeply roughened. Vertex 

 subconical, more or less produced. Genal spines not directed anteriorly 

 from the apices of prominent tubercles. Prothorax evenly trapezoidal, 

 with straight sides; bristles long, normal in position. Femur of male with 

 two subapical teeth on inner side; tibia of male with a similar tooth near 

 base. 



Type: Phlceothrips ^Hoplandrothrips) xanthopus, new 

 species. 



BagnaH's Acanthothrips bidens almost certainly belongs 

 here, if it is not the original Hoplothrips corticis Amyot and 

 Serville. In the latter event Hoplothrips will, of course, have 

 priority over Hoplandrothrips. 



Phloeothrips ( Hoplandrothrips) xanthopus, new species. (PI. VI, figs. 

 6, 7a, b.) 



Female (macropterous}. Length about 1.7 mm. General color light 

 blackish brown, with scattered maroon hypodermal pigmentation in head, 

 thorax, and abdomen, exclusive of tube; tibiae, tarsi, bases of intermediate 

 antennal segments, and middle of abdomen, lemon-yellow. 



Head 1.3 times as long as wide, broadest at middle; cheeks rounded ab- 

 ruptly to eyes and gently to near base, thence slightly diverging, forming a 

 neck-like constriction, which is equal in width to greatest distance across 

 eyes, or to about 0.9 greatest width of head; lateral surfaces roughened 

 with rather deep, anastomosing lines, each cheek with about three rather 

 stout, dark bristles arising from short tubercles; vertex subconical, pro- 

 duced, overhanging; postocular bristles alone prominent, equal in length 

 to eyes, dilated and truncate at tip. Eyes about one-third as long as head, 

 their axis of greatest dorsal length nearly coinciding with a line drawn from 

 base of first antennal segment to anterior end of gena. Ocelli of moderate 

 size, equidistant; anterior ocellus borne at apex of produced vertex, pos- 

 terior ocelli distinctly in advance of middle of eyes. Antennse 1.6 times 

 as long as head, slender; segment 1 trapezoidal, broader than long; 2 

 about 1.75 times as long as broad; 3 clavate, twice as long as wide, deeply 

 sinuate on inner side, pedicel curved outward; 4 clavate, narrowed at apex, 

 equal in width to 3, broadest slightly in advance of middle, twice as long 

 as wide; 5-7 truncate-fusiform, little wideral apexthan at base, successively 

 decreasing in length and width, 7 about 2.5 times as long as wide; 8 

 subconical, truncate and slightly narrowed at base; segments 1 and 2 con- 

 colorous with body; 3 yellow, clouded with brown at middle; 4-6 yellow, 

 indefinitely shaded with brown in apical half or two-thirds; 7 and 8 brown, 

 the pedicel of former pale. Sense cones large, fully a third as long as seg- 

 ment 3; formula: 3, 1-2; 4, 2-2; 5, 1-1+ 1 ; 6, 1-1+ 1 ; 7 with one on dors u m 



