I food—Studies in Tuhvliferous Tln/sanoptera. 150 
Abdomen nli^htly wider tluin pterutliorax. Tube }d)out liulf as loiiK as 
liead, le^-s than twice as lon«: as basal width, and iK'arly twice as wid(* at 
base as at a|iex. Alulominal l)ristles pointed ; terminal bristles about 
one-foni'tb longer than tnbt‘. 
MeasnnMnents of holotyiH*; beny:tli l.'Jlimin.; bead, Unij^tli .lilt' mm., 
width .ISO mm.; protborax, lenuth .1-14 mm., width (ini'lnsive ol coxa;) 
.L’SO mm.; pterotboi'ax, width .illS mm.; alxlomen, width .dOO mm.; 
tube, length .108 mm., width at base .OtiO mm., at ape.x .Olvl mm. 
Antennal sediments; 1, ilO^ ; 2, lenj^th 48/u., width 28m; 8, length 41m, 
width 24m; 4, length 47m, width MOm; u , 45m; 15, 41m; 7, 41m; 8, 30m; total 
length .:)2i) mm. 
Described from five females taken by sweeping on “ .Moro Island, 
Panama (near Tahoga Island, Kay of Panama), October 17, ltll3,” by 
Mr. James Zetek. 
The form and size of the third antennal segment and the absence of 
the usual sense cone from its inner surface, together with the character 
of the prothoracic bristles and tlie unusually short tube, would seem to 
indicate a very distinct species. 
Olyptothrips flavesceiis Hood. 
1012. Paolothrips. [lapsus, GlyptoUirvps] fiavescem Hood, Psyche, vol. 
XTX, p. 11(5, PI. 0, tigs. a-c;. 
Seven apterous females and fourmales of this anomalous 
Phloeothripid were taken in grass sod at Ohester, New dork, .\.|)ril 2, 
1013, l)y Mr. J. C. Faure. The species was known ])reviously from three 
macropterous females, collected in Illinois. Except for the absence of 
ocelli and wings and the consequent reduction in the size of the ptero- 
thorax, the specimens agree closely with the tyiies. The males ditler in 
being smaller and slightly moi-e slender. 
Rhynchothrips tridentatus (Shull). 
(Plate 4, ligs. 4 and 5.) 
1000. 'frichdlhripH tridmlatus Ent. News, vol. .NX, ]). 220, lig. 0. 
1013. [liltIIiKdiolhrips] tridcidutvi^ Ilofid, Proc;. Ent. Soc. Wash., vol. 
XIV, p. 141. 
Koth this species and .Moulton’s Trir.h.dlhrips ilex an* desciMbed as hav¬ 
ing all tarsi armed with a tooth. 4'he tc'rm “tarsal tooth,” however, 
since the time of I'zel’s epoch-making work, has bei'ii tak('n to mean a 
chitinons evagination of the inner snrfac*e of the tarsus near its base; 
while the structures s('en by Shull and Moulton arc tla; articulated claivs 
at the apex of the tarsus,—almost certainly present in every species of the 
onler Thysanoi)tera. Teneral specimens oftt'ii show these claws very 
clearly, and this is the explanation for the promiiumce which Shull gives 
the character in his description, lor both of his types aie fleshly emeiged 
specimens. 
