124 Journal New York Entomological Society. [Vol. xxiii. 



palpi three-segmented, the basal segment very short and the middle segment 

 much longer than the apical. 



Prothorax weakly chitinized, the pronotum merging gradually both an- 

 teriorly and posteriorly with the connecting membrane, without any distinct 

 line of division ; pronotum separated from the pleural plate and the coxa by 

 a longitudinal suture which is slightly concave laterally, surface with faint 

 anastomozing lines of sculpture, a few scattered spines, and one long bristle 

 at each posterior angle; width across coxae about 1.9 times the width of the 

 head ; anterior coxje with three distinct bristles arising from the ventral 

 surface. Pterothorax wider than the prothorax, anterior angles rounded. 

 Legs typical of the genus, stout, with fore and hind femora enlarged, the 

 former nearly as wide as the head ; fore tibiae swollen anteriorly, with a 

 stovit tooth internally just before the apex; hind tibiae with two strong spines 

 on inner surface at apex, the upper longer and nearly half the length of the 

 tarsus ; anterior tarsi with a short curved hook at the apex. Fore wings 

 bluntly pointed, tapering gradually to near apex, margins almost straight, 

 about fourteen times as long as width at middle, with two longitudinal veins 

 joined by a stouter cross vein about one-third the wing length from the base ; 

 both longitudinal veins and costa regularly set with moderately long, slender 

 spines; in the unique specimen there are 30 and 29 on each costa, 21 and 23 

 on the fore veins, and 14 and 13 on the hind veins; the fringe on the 

 anterior margin is long and rather sparse ; the minute pubescence on the sur- 

 face of the wing is almost obsolete. Hind wings similar in shape to fore 

 wings, slightly shorter, and with a single very indistinct central vein repre- 

 sented chiefly by a rather deeper color. 



Abdomen broad, blunt at apex, longitudinally striate near the lateral 

 margins of the ventral surface ; tenth segment faintly transversely striate 

 above ; spines weak except on the last two segments, the longest of these 

 being about equal in length to the last three abdominal segments. 



Measurements of holotype : Length 1.02 mm.; head, length 0.084 mm., 

 width 0.121 mm.; prothorax, length uncertain, width (inclusive of coxae) 0.228 

 mm. ; pterothorax, width 0.242 mm. ; wing, length 0.73 mm., width at middle 

 about 0.052 mm. 



Antennae : i 2 



Length (/u) 12 33 



Width (jx) 30 31 



Total length, 0.220 mm. 



Described from one female collected from an ornamental clump 

 of bamboos in New Orleans, Louisiana, on December i, 1914, by C. B. 

 Williams. 



This, the second described species of the remarkable family Mero- 

 thripidse, is particularly interesting as being the first macropterous 

 specimen yet found ; and for that reason the wings have been de- 



