No. 1590. ON SOME NEW WEST INDIAN TKRIPS— FRANKLIN. 725 



narrowing slightly posteriorly; fully as wide as it is long. Legs 

 rather long and slender; fore femora only slightly thickened; fore 

 tarsi one segmented and armed with a tiny tooth within. All the 

 coxse and femora and the middle and hind tibiae and tarsi are brown 

 in color, the tarsi being, however, somewhat lighter than the other 

 segments ; anterior tibia' brown at base but shading to yellow at apex ; 

 fore tarsi yellow but with a dark colored spot on the inside of the 

 apical portion. Near the base of each posterior and middle femur 

 below and of each anterior femur in front is a sine-le long; slender 

 spine. Wings present, narrowed in middle, transparent; the fore 

 pair slightly stained with brownish oi" yellowish at the base, where 

 they bear three long, knobbed sjoines on the remnant of the single 

 median vein. Scale light brown. Fringes long, single, except near 

 end of hind fringe of fore wing where it is double for five or six 

 hairs. The front fringes of the fore wings are if anything longer 

 than their hind fringes, and the hind fringes of the hind wings are 

 longer than their front fringes. 



Abdomen at base slightly wider than the pterothorax to Avhich it 

 is broadly joined, widest at base, tapering gradually to the tube. 

 Tube about two-thirds as long as the head, tapering slightly; some- 

 what more than one-half as wide at the apex as it is at the base; on 

 the ventral side of the abdomen a strong chitinous rod runs forward 

 a short distance from the base of the tube; some of the hairs at the 

 end of the tube as long or longer than the tube itself. Spines on 

 abdomen, for most part, slender, rather faint and inconspicuous, 

 not knobbed; abdomen as a rule lighter brown in color than the rest 

 of the body. 



Type.— Cat No. 113(>1, U.S.N.M. 



Described from 21 females (cotypes), of which 10 (three slides) 

 are deposited in the collection of the United States National Museum 

 and 11 (three slides), besides numerous paratypes, in that of the 

 Massachusetts Agricultural College. Of this species there were 31 

 specimens in all in the collection, all females. Male unknown. 



Food plants. — Euphorbia, date palm, Crotolaria, morning glory. 

 Usually on flowers, often in colonies. 



Specimens taken at Glendor, Belle, and Bellevue, St. Michael, and 

 Cane Garden, St. Thomas, Barbados. Dates of capture ranging 

 from July 21 to August 24. This species appears to have its closest 

 ally in A. aculeata (Fabricius) of Europe. 



2. TRICHOTHRIPS NIGER, new species. 



Plate LXIII, figs. 4, 9; Plate LXIV, fig. 11; Plate LXV, figs. 18, 22. 



Female. — Length, 2.19 mm. ; width of head, about 0.27 mm. ; 

 width of mesothorax, about 0.47 mm. ; greatest width of abdomen. 



