INSECT NOTES FOR I9IO. I3 



bands, between the first and second of which is a deep rich red 

 band. The genital segment is dark brown. 



Head. The head is broader than the prothorax. The cephal- 

 ic aspect (Fig. 13) presents 2 sub-quadrate epicranial plates, 

 the dorsal margin of which gives a decided concave curve. A 

 distinct median suture separates the plates. All 3 ocelli are 

 visible in this view of the head. The front ocellus, situated at 

 the ventral end of the median epicranial suture, is just at the 

 median dorsal angle of the frontal lobes. The frontal cones 

 are large, triangular processes, their combined bases extending 

 the full breadth of the head ventrad the compound eyes, and in 

 length the cones are nearly equal to the length of the epicranial 

 plates from the same aspect. The distal tip of the cone is di- 

 rected ventrad. The setae of the cones are longest and most 

 numerous near the tips. The antennal sockets are about on a 

 line with the front ocellus. . The antennae are about 2.75 mm. 

 long, reaching if extended backward far along on the abdomen. 

 The antenna is lO-jointed. Ill is longer than any other joint, 

 IV to VIII are subequal, IX and X combined are about equal 

 to VIII. Joints IV, VI, VIII and IX each bear a single distal 

 circular sensorium. There are a very few scattered slender 

 setae on the antenna and X is armed with two stout terminal 

 spine-like setae not quite equal in length. 



Wings. In form and venation the wings of galcaformis are 

 typical of the genus Psylla. The stigma is distinctly indicated 

 but narrow, appearing like a mere widening of the costal mar- 

 gin. Fig. 9 gives a more adequate idea of the venation than 

 a description. The wing length is about 4.1 mm. 



Genitalia. Female. The genital segment is long and taper- 

 ing, from the lateral aspect. The supra-genital plate has a 

 slight concave curve in dorsal outline, the tip is rounded and 

 somewhat hood-shaped and is bristling with long setae. Setae 

 of the same sort are present but less numerous along the dorsal 

 line of the supra-genital plate back from the tip and along the 

 lateral surface are small but stout spine-like setufae which are 

 visible through a 1-6 in. objective. The subgenital falls far 

 short of the supra-genital plate in length. The tip is pointed 

 and splinter-like. Along the ventral surface are long setae and 

 on the lateral surface are short, stout spine-like setulae, both 



