142 Philippine Journal of Science 1919 
Genus PAUROPSYLLA Rtibsaamen 
Key to the species .* 
a 1 . Forewing with pterostigma. 
b l . Antennas with two or more very long setae at tip. 
c 1 . Antennae much shorter than width of vertex between eyes; vertex 
showing median suture distinctly. 
d 1 . Antennas with eight long setae, tassellike. (Malay Archipelago.) 
P. brevicornis sp. nov. 
d\ Antennae with two long setae, not tassellike. (Bengal.) 
P. nigra sp. nov. 
e 2 . Antennas about as long as width of vertex between eyes, with 
three long setae; vertex with median suture not visible. (Malay 
Archipelago.) P. verticis sp. nov. 
b 2 . Antennae without long terminal setas. 
&. Forewing broadly rounded, marginal cells moderately large, ptero- 
stigma narrow; insect of medium size. (Ceylon.) 
P. spondiasas Crawford (’15: 260). 
c 2 . Forewing acute at apex, broad, marginal cells very large, ptero- 
stigma elliptical, broad; insect large. Malay Archipelago; 
Hawaii?) P. apsylloides sp. nov. 
a 2 . Forewings without pterostigma. 
b 1 . Second marginal cell much larger than first; fourth furcal (Mi + j) 
angulately arched and touching radius. 
c 1 . Insect minute, about 2 millimeters long from head to tip of folded 
wings; for'ewings with black spots scattered along veins; first 
marginal cell about one-third as large as second. (Ceylon.) 
P. floccosa Crawford (’15: 259). 
e 2 . Insect larger, 3 millimeters long or longer; forewing veins without 
black dots; first marginal cell about one-tenth as large as second. 
(Bengal.) P. tuberculata Crawford (’12: 430). 
b 2 . Second marginal cell not larger than first, usually subequal; fourth 
furcal not touching radius. 
ch Media and cubitus without stem, the radius, media, and cubitus 
forking from basal vein at same point (as in Trioza) . (Phil- 
ippines and Java.) P. triozoptera Crawford (’13: 296). 
c\ Media and cubitus with a short stem, not as above. 
d 1 . Head and thorax black, reticulately marked; anterior ocellus 
above, near posterior ocelli; abdomen large, not flattened. 
(Philippines and Java.) P. udei Riibsaamen (’99: 264). 
d \ Head and thorax reddish or light brown, reticulation indistinct; 
anterior ocellus in front, more distant from posterior ocelli. 
(Bengal.) P. depressa Crawford (’12: 429). 
Pauropsylla brevicornis sp. nov. Plate I, figs. 1 and 2. 
Length of body, 1.3 millimeters; length of forewing, 1.9. 
General color reddish to chocolate brown, with venter of 
* Because of lack of knowledge concerning them I have not included 
in this key Pauropsylla ficicola Kieffer and P. globuli Kieffer. 
