NO. 1590. ON SOME NEW WEST INDIAN THRIPS— FRANKLIN. 7 17 



the lower one of each anterior pair. Between the upper spines of the an- 

 terior pairs there are two much smaller ones near the anterior border 

 of the prothorax, one on each side of the middle line. Between the 

 two upper spines of the pairs on the ]:)osterior angles a row of shorter 

 ones runs along the hind border; of these the second from the median 

 line on each side is much the stoutest and longest. Color of protho- 

 rax a somewhat lighter brown than that of the head, about like that 

 of the j^terothorax and abdomen. Mesothorax about one and one-half 

 times as wide as the prothorax ; mesonotal plate with one strong 

 and conspicuous spine on each lateral angle and with one median and 

 tAvo lateral spines on each side near the posterior margin. IMesoster- 

 num with one long conspicuous spine on each side, placed near the 

 lateral angle. Metathorax tapering slightly b\it distinctly posterior- 

 ly, distinctly narrower than mesothorax ; width at posterior end only 

 about four-fifths the greatest width of the mesothorax. • Endotho- 

 racic invagination of metathorax Y shaped. Metasternum with a long 

 conspicuous spine somewhat behind the middle on each side. Meta- 

 notal plate bearing four spines at the anterior edge, the middle pair 

 being very much more stout and conspicuous. 



AVings about reaching the anterior margin of the seventh abdom- 

 inal segment ; breadth at middle about one-twelfth their length ; some- 

 wdiat shaded with brown except the basal fourth which is clear; 

 scale often shaded soniewhat as well as the costa at the base ; fringes 

 of both the fore and hind wings rather strongl}^ stained with brown. 

 Each fore wing has two longitudinal veins extending from base to 

 tip which bear sj^ines at regular intervals as follows: Costa 22 to 

 28; fore vein 20 to 23; hind vein lo to 18; scale 5, besides a pair at 

 the tip; a light sparse fringe on costal border of each wing; posterior 

 fringes long, heavy, and Avith the individual hairs quite crinkly in 

 the middle. Wings bearing, besides the spines and fringes, numerous 

 minute spines arranged in rows which run lengthwise of the wing. 

 General surface of the legs with a considerable number of spines; 

 each tibia with a pair at its extremity; posterior tibia; each witli a 

 conspicuous longitudinal comb-like row of seven or eight rather stout 

 spines on the inner side ; posterior tarsi with the basal segment of each 

 bearing several spines at its distal end. Coxoe and femora brown, 

 sometimes very light, the anterior pair tipped slightly with yellow. 

 Fore tibiffi yellow, middle and hind tibia? deep In-own, sometimes 

 slightly tipped Avith light yelloAv ; all the tarsi light yelloAv, with a 

 small but conspicuous dark spot on their inner sides toAvard their 

 tips. 



Abdomen elongate ovate in general outline, at base only about 

 three-fourths as Avide as the metathorax, widest at fifth and sixth 

 segments, pointed at apex, tAvo and one-half to three times as long as 

 broad, broAvn and Avith brown spines, those toward the tip being long 



