122 PERGANDE [5*4] 



lobes and sternal plate, posterior margin of the scutellum, two small 

 roundish spots on the metathorax, a transverse row of three small 

 linear spots on the first abdominal segment, a narrow, transverse band 

 about the middle of the abdomen, a dorso- lateral row of three transr 

 verse spots in front of and two smaller spots between the nectaries of 

 a brownish or dusky coloration. Legs brownish yellow, base of femora 

 greenish yellow ; both the femora and tibia? change gradually to a darker 

 brown towards the apex. Tarsi black. Nectaries and tail concolorous 

 with the abdomen, with tip of nectaries blackish. The wings were 

 very much mutilated, though the subcosta appears to have been green- 

 ish or greenish yellow at base and shading gradually to brownish yel- 

 low towards the stigma, which appears to have been greenish or yel- 

 lowish green ; veins black. 



Length of body about 3.4 mm. ; expanse of wings about 10 mm. ; 

 length of antennas almost 4 mm. ; of the nectaries nearly 0.4 mm. ; and 

 of the tail a little over 0.2 mm. The two basal joints of the antennas, 

 as usual, shortest, each of them slightly over o.i mm., the first one 

 being slightly the longest; the third joint measures 0.8 mm. in length, 

 the fourth nearly 0.7, the fifth a little over 0.5 mm., and the sixth with 

 its spur 1.2 mm. in length. The hairs of the antennas and abdomen 

 are very short, simple and sparse, while those of the tibias are prom- 

 inent and spine-like. The nectaries are slightly tapering and much 

 shorter than usual in this genus, not reaching to the end of the body, 

 while the tail is unusually broad and but slightly constricted beyond 

 the middle. 



Apterous female : General coloration similar to that of the winged 

 form ; eyes brown, antennas black, the two basal joints pale, the third 

 joint brownish. Legs and nectaries brownish yellow, base of femora 

 greenish, apex of the tibias, of the nectaries and the tarsi black. There 

 are no markings on the abdomen, except a dorso-lateral row of five or 

 six minute, impressed, dusky dots each side in front of the nectaries. 



Length, 3.6 to 4 mm. to the tip of the tail ; antennas rather short, 

 barely reaching to nectaries and about 3 mm. in length. The third 

 joint measures almost 0.7 mm., the fourth somewhat over 0.4 mm., 

 the fifth 0.4 mm., and the sixth with its spur 0.8 mm. in length. 

 There are from one to four small sensoria a little above the base of 

 the third joint. The nectaries and tail are subequal in length, or with 

 the tail, as in some specimens, distinctly longer than the nectaries ; the 

 tail measures about 0.4 mm. in length and is much broader than in 

 the winged form. 



The winged form of this species resembles, on account of the mark- 



