GENUS PARALEYRODES. 81 
two transverse bands interrupted in the middle apically with a large 
spot of very clear yellow. Feet pallid, like the antennae. 
This insect is rather common in, San Diego on the leaves of parqui 
(Oestrum parqui) and infests this plant principally during the month 
of January. We reproduce here what we have noted about this little 
animal in our diary. 
On the lower portions of the leaves of parqui a peculiar kind 
of spot was observed of light iridescent green, covered with many 
perfect eggs separated from each other, of oval form, earth color, 
measuring about one-twelfth of a line in diameter. A little later 
these eggs changed color, becoming blackish with white points, 
and we then observed with a magnifying glass that they were 
females ornamented with six dots arranged in two series, three in 
each one. These little dots bearing cotton threads vary with the size 
of the animal, extend from the side of the margin which they pass 
beyond to form a reticulated membrane like that of Bissus, and after 
that run to the center, uniting there with each other to form an ir- 
regular mass, whitish, covered with cotton threads, and showing 
little drops of sweetish liquid very acceptable to the ants which visit 
them very frequently. The males, provided with large wings, are 
sedentary, for if they move they rarely leave the leaf, but on jarring 
the bush they fly precipitately a little distance, but are not able to 
sustain flight for a long time. They generally inhabit the underside 
of the leaf and are rather common in summer. 
Genus PARALEYRODES Quaintance. 
Forewing with the radial sector and a small rudiment of the me- 
dia retained; cubitus sometimes faintly indicated by a fold; vertex 
rounded ; antennae of four segments, of which the third is the long- 
est ; claspers of male short and stout ; penis bilobed ; paronychium of 
the foot represented by a long stout spine. Pupa case with a number 
of large compound wax pores of the type illustrated in Plate XXX, 
fig. 3; vasiform orifice with a very long, setose, spatulate, exserted 
lingula, which is armed with four long spines. Size small. 
Type, persece Quaintance. 
This genus is the most specialized one in the subfamily and repre- 
sents the greatest reduction in wings and antennal segments. The 
two species may be separated as follows : 
Species of Paraleyrodes. 
A. Wings unmarked; thorax of pupa case with two stellate structures on the 
caudal part ; two anterior pairs of abdominal compound pores often 
reduced vricfiii 
B. Wings shaded with dusky; thorax of pupa without stellate structures; 
anterior abdominal pores normal persece 
