Vol. xxiv] ENTOMOLOGICAL NEWS. 163 



are almost wholly yellow, being touched with light brown only 

 upon the vertex. Other female specimens show the pronotum 

 with only a spot of brown near its center, the rest being lemon- 

 yellow, and with the whole metanotum of the latter color. 

 Some male specimens differ from the original description in 

 having the scutellum bright lemon-yellow, all gradations be- 

 tween the two having been met with in Peruvian material. 



The above observations were made from both balsam and 

 dry mounts, and tend to show that the original description 

 fixed the coloration of this species a little too closely (probably 

 owing to the small number of specimens on which the descrip- 

 tion was based) and that the ratio of yellow to brown really 

 varies quite widely among the different individuals of the 

 species. 



Signiphora lutea sp. nov. 



Female. Length, 0.65 mm. ; greatest length of wing, 0.5 mm. exclu- 

 sive of cilia. Antennal scape robust, reaching to middle of eyes ; pedi- 

 cel large, stout, two-thirds as long as scape, and about the same width ; 

 funicle joints I, 2 and 3 very small, increasing slightly in diameter from 

 I to 3, joint 3 being from two to three times length of joint I and 

 joint 2 intermediate in length between joints I and 3; together they 

 are rather less than one-third length of pedicel, and the largest is only 

 one-half the diameter of pedicel at its thickest part; club a trifle more 

 than twice length of pedicel, long-oval in side view and nearly twice 

 as wide as pedicel, when seen from above it is of same width as funi- 

 cle joint 3, with parallel sides. Club sparsely longitudinally striated. 

 Marginal vein with 6 strong, prominent bristles, sub-marginal vein 

 with one and stigmal vein with one. All wing veins fuscous; fore- 

 wings with fuscous patch covering all the disc below marginal and 

 stigmal veins. Hind wings as in S. occidentalis. 



Middle tibiae with two external spines near base and one near tip. 

 I lead deep lemon-yellow often tinged with brown on vertex; antennae 

 lemon-yellow at base shading through fuscous into brown at tip of 

 rlub; eyes very dark-red, almost black; ocelli dark-red; mouth parts 

 light-brown, mandibles black-tipped. Thorax lemon to canary yellow 

 except for brown pronotum and front margin of mesonotum, three 

 minute black dots on each side near insertion of wings. Abdomen 

 generally slightly darker than thorax, with a varying band of brown 

 on cephalic portion. This brown band may vary in size from wide, 

 covering the first three abdominal segments, to linear, or even dis- 



