70 Hood — New Genera and Species of N. A. Thysanoptera. 



the two pairs at the posterior angles longest; midlaterals short. Ptero- 

 thorax slightly wider than prothorax, about as broad as long, sides gently 

 arcuate, slightly converging posteriorly. Wings present, clear; fore wings 

 distinctly narrowed at middle, with a slight brownish cloud at extreme 

 base, and with the subapical fringe on the posterior margin double for 

 about seven hairs. Fore tarsi armed with a small, acute tooth. 



Abdomen slightly wider than pterothorax. Tube rather short, less 

 than .b' as long as head, about 1.7 times as long as its basal width, suf- 

 fused with hypodermal pigmentation. 



Measurements. — Length, 1.5 mm.; head: length, .200 mm.; width, 

 .171 mm.; prothorax: length, .150 mm.; width (including coxae), .2<i<i 

 nun.; pterothorax: width, .200 mm.; abdomen: width, .320 mm. ; tube: 

 length, .117 mm. ; width, at base, .057 mm. ; at apex, .032 mm. Anten- 

 nal segments: 1, 33m; 2, 39m; •">, 37m; 4, 42m; 5, 39m; <>, 36m; 7, 3(>m; x , 

 25m; total, .29 mm.; width; .029 mm. 



Male. — Similar to female but slightly smaller (length about 1.2 mm. ). 

 and with slenderer antennae.* Fore femora often swollen; fore tarsi 

 armed with a rather large, stout tooth. Abdomen slender. 



Described from a good series of both sexes taken by Mr. C. A. Hart at 

 Brownsville, Loma, and on Padre Island opposite Pt. Isabel, Texas, ami 

 at Matamoras, Mexico, in June, July, and November. It was rather 

 common in sweepings, and was once taken in tiowers of Clematis drum- 

 mondii. 



Type locality. — Brownsville, Texas. 



This species is very close to H. govlfleyi Franklin. But in a series of 

 over thirty specimens the prothoracic and postocular bristles are always 

 pointed and shorter, with the anterior marginals greatly reduced in size; 

 the antennae are always much darker in color; and there is no sense cone 

 on the inner margin of the third antennal segment. 



The figure given herewith was unfortunately made some time ago from 

 a specimen which, though freshly-Hilled, had the head unusually nar- 

 nowed at base. 



* Scop.eothrips gen. now 



( (TKwwaws, a dwarf; 6p^, a wood worm. ) 



Body very short, broad, compact. Head fully as broad as long, cheeks 

 snl (parallel; front produced between eyes, separated from their anterior 

 margin by a deep furrow, and bearing the anterior ocellus at its ex- 

 tremity. Mouth cone short, heavy, attaining fore margin of mesothorax. 

 Antennae eight-segmented, all segments free and of normal form. Legs 

 short, stout; fore legs of male often greatly swollen, the femora serrate 

 on inner margin and with a strong basal tooth; tarsi ami inner apex of 

 tibiae each with a strong tooth in the male. Abdomen moderately large, 

 broad at base, thence tapering to tube. All prominent bristles, excepting 

 those at apex of tube, infundibuliform. 



Type. — Scopieothrips unicolor sp. nov. 

 * Try bom notes in his original description that this is true also of H. bagnalli. 



