350 JOURNAL OP ECONOMIC ENTOMOLOGY [Vol. 2 



tory in England and mentioned ten varieties of the species, suggest- 

 ing that there is evidently quite a variation in color and size. 



A very interesting diiference of form is noticeable in the viviparous 

 and oviparous females, in the shape of the body, the former being stout 

 and short and the latter long and spindleshaped. Prof. C. P. Gil- 

 lette, in describing a new species of this genus, DrepanosipJmm hraggii, 

 figures the egg-laying female of that species, which shows the elongate 

 spindleshaped abdomen, and explains the method of egg deposition. 



Descriptions of the forms at hand taken on maple {Acer sp.) at 

 Lorenzo, Cal., by Mr. I. J. Condit are given below : 



Winged viviparous female.— General color reddish yellow ; head at base, 

 dorsal plates of thorax, joints of legs and tarsi dark ; femora and tibiae dusky 

 orange; antennre dusky at base, paler at tip; nectaries yellow, with dark tips; 

 Cauda reddish yellow ; wings hyaline, long, and held in horizontal position 

 when at rest ; stigma opaque ; veins dusky, ending in indistinct dusky margins. 



Antennae long and slender, almost twice as long as the body, and set on large 

 prominent tubercles ; segment 3 as long as 6 and 7 together, and with fifteen 

 to twenty or more elliptical sensoria placed in a regular line along the upper 

 outer edge of the basal half of the segment ; segment 5 with one large senso- 

 rium near the distal end ; 6 with three to five large sensoria irregularly placed 

 on the segment and distinctly separated from each other ; all the segments set 

 with short, spinelike brisles ; tip of segment 7 with two setaceous hairs ; head 

 broad, with two long and two short hairs in front ; the two ocelli adjoining the 

 eyes quite prominent and having a dusky ring around the base of each. 



Prothorax long, with several tuberculate hairs on each side ; abdomen robust, 

 set with numerous short hairs arising from prominent tubercles. Legs set with 

 numerous short hairs ; tibite long and slender, femora short and stout. 



Nectaries slightly curved outwardly and swollen in the middle. Cauda short 

 and conical. 



Measurements: Length of body, 3.72 '"'"; width, L04 •""■; length of antennal 

 segments, (1) .20""", (2) .08"™ (3) 1.6'"™, (4) 1.2™™. (5) .84™™, (6) .15™™, (7) 

 L4 ™™; total length, 5.47 ™™; length of wings, 4.8 ™™; total expanse, 10.32 ™™; 

 length of nectaries, .96 """; cauda, .2 """. 



Winged oviparous female. — General color reddish yellow to yellow ; head, 

 antennae from middle of segment 3 to end of 6, distal ends of femora and tarsi 

 dusky ; ends of nectaries dusky orange ; dorsal and ventral plates of thorax 

 dark brown. The general characters are similar to those of the viviparous 

 female, with the exception of the abdomen, which is longer and is spindle- 

 shaped. This form probably does not occur until fall, but as late as November 

 the viviparous forms can be found on the underside of the leaves. Length of 

 body, 3mm ; other measurements as in winged, viviparous female. 



Pupa. — The pupse of both forms are similar to each other, except as to the 

 shape of the abdomen, which in the one case is robust and in the other spindle- 

 shaped. Color light reddish throughout. 



