GENUS PARALEYRODES. 81 



t^yo transverse bands interrupted in the middle apically with a large 

 spot of very clear yellow. Feet pallid, like the antenna\ 



This insect is rather common in San Diego on the leaves of parqui 

 {Cestrum parqui) and infests this plant principally during the month 

 of Januaiy. 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 tx) 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 fi}'^ 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 ; antenna? 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. V^Mngs unmarked; thorax of pupa case with two stellate structures on the 



caudal part: two anterior pairs of abdominal compound pores often 

 reduced urichii 



B. Wings shaded with dusky ; thorax of pupa without stellate structures ; 



anterior abdominal pores normal persew 



