241 



(jiiite hairy. Antennae ten-jointed, of the nsnal type; joints 

 1 and 2 stouter than the rest, joints 3 and 4 subequal and 

 longer than 5, 6, 7, S and 0, which are snbeqnal ; joint 2 is 

 subequal with 9, and joint 1 is the shortest. 



Habitat. — Between folded leaves of Acacia koa, Mount 

 Tantalus, Oahu, Hawaiian Islands. Collected by Mr. O. H. 

 Swezey, for whom I take pleasure in naming the species. 



Pseiidorocnis (jallicohi sp. n. 



Adult feuuile viviparous, about 2^2 mm. long, with caudal 

 ^etae 3V2 ii^"i- long, by l^/x mm. broad, convex, varying from 

 !.i grayish green to a yellowish brown color, with a faint dark 

 line running lengthwise in the center of the dorsum. There 

 are three pairs of filaments, which are quite pronounced, the 

 two caudal ones being about twice as long as the two preced- 

 ing pairs. The filaments on the four other segments are very 

 short. AYlicn placed in hot KOH body turns dark reddish 

 brown. Antennae eight- jointed, joint 8 longest. Joint 1 

 twice as broad as 2, both broader than the rest. Joints 1, 2 

 and 3 subequal, joint 1 being broader than long at its base. 

 Joints 4, 5 and 6 subequal and a little shorter than 7. Joint 

 8 is one-third longer than joint 2. All joints bear a few 

 hairs. Legs short and stout. Femur much swollen (middle 

 leg). Femur plus trochanter about subequal with tibia plus 

 tarsus. Claw stout, with short flattened digitules ; those of 

 ttrsus are long fine knobbed hairs. Tibia more than twice 

 as long as tarsus. Caudal lobes well developed, with setae 

 about as long as hairs on anal ring, and also bearing two very 

 etout conical spines in a gi-oup of round pores in which are 

 also several long fine hairs. Anal ring large, with usual six 

 hairs, which are stouter than the caudal setae. There is a 

 marginal patch, similar to the one on the caudal lobe, on the 

 penultimate segment. Marginal patches become less pro- 

 nounced cephalad. There are numerous hairs and round pores 

 scattered on the last segment, as Avell as on the cephalic por- 

 tion of the body. 



The galls, or rather pockets, in which the insect lives are 

 v.sually on the upper side of the leaves. The young larvae 

 station themselves on the underside of the very young, tender 

 leaves, and by irritation cause a depression in the leaf, which 

 grows very quicklj^, forming a deep, pocket-like gall. As the 



