(J2 R. Xakahashi 



dorsam of the abdomen. 



Body provided with many very long scarcely or very sliglitly knobbed hairs 

 arising from very small tubercles on the dorsal surface, lacking finger-like tubercles, 

 as in the younger nymph. Head provided with 10 very long hairs which afe a 

 little shorter than the basal two antennal joints taken together, very slightly or 

 scarcely cajiitate, and distributed on the dorsal surface as iu the younger nymph. 

 Frontal tubercles almost lacking. Eyes with very small ocular tuljcrcles. Antnnae 

 6-jointed, provided with some minute spinules on tlie distal pm-tions of the 3rd, 4th 

 and 5th joinis and on the 6th; the 1st, as well as the 2nd, provided witli a long very 

 slightly capitate hair arising from a very small tubercle; the 3rd much shorter than 

 the frout tibia, provided with alx)ut 4 very long slightly capitate hairs arising from 

 very small tubercles arranged in a row and a few moderately long normal bristles; 

 tl>ese hairs shorter tlian those on the head; the 4th and 5th with a few moderately 

 long bristles, without capitate hairs, the scnsorium circular and of medium size; the 

 6th with a bristle below the sensorium; the relative length of joiuts about as follows: 

 III-95, IV-64, V-60, VI-65 (30+35). Rostrum not reaching the middle coxae. 

 Prothorax provided with a very small blunt tubercle on either side near tlie liind 

 margin, and 6 very long stout hairs on the uotum distributed as in the young 

 nymph. Mesothorax large, with the wing-pads well developed, provided with 

 10 long hairs on the dorsal surface, distributed as in the 3rd instar. Meta- 

 thorax and the 1st abdominal segment eacli provided with 4 long hairs on the 

 middle and 2 similar ones near either side; these hairs arranged in a transverse row 

 as on the other abdominal segments; the 2nd, 3rd and 4th abdominal segments each 

 provided with 6 hairs on the middle and 2 near the sides; the 5th, 6th anil 7tli each 

 with 4 or 5 hairs on the middle and 1 near the sides; the 8th with 6 hairs. Corni- 

 cles much shorter than the hairs on the abdomen, longer than wide at midlcngth, 

 somewhat expanded at the base and somewhat constricted near the middle. Cauda 

 wider than long, broadly rounded, without hairs. Anal plate not bilobed. Legs 

 long and stout; tibiae provided with some long bristles; hind tarsi longer tlian the 

 cornicle, but slightly shorter than the base of tlie last antennal joint. 

 Length of body-about 2.0 mm. Antenna about 1.5 mm. 



The fourtli instar differs from the third in the well-developed wing-patls. 

 These descriptions were made from specimens collected iu "February, 1923, at Tai- 

 hoku, Formosa. The legs of the nympli, like tlie adult, are providi'd with two 

 limpid hairs between the claws. 



