b 
268 ENTOMOLOGICAL NEWS. hone; 12 
facetted, no ocelli. Antennae with bristly hairs, about 25-joint- 
ed, last thirteen joints shorter than others, scape thickened, 
Mandibles strong, combining certain characters of Troctes and 
Peripsocus. Maxillary forks trifid, long, not stout, slightly 
curved (see figures 2 and 3). Maxillary palpi 4-jointed, much 
like those of Peripsocus californicus; the terminal joint flatten- 
ed, spatulate, truncate and widened apically. Labial palpi 2- 
jointed, the terminal joint appearing somewhat flattened. 
Oesophageal sclerite and lingual glands rather similar to those 
of P. californicus. 
Neck serrate above in profile, showing about eight or more 
notches and teeth. Prothorax reduced, shortened and _ nar- 
rowed; mesothorax and metathorax successively larger, both 
very high, about as wide as base of abdomen; all three di- 
visions of thorax short. Nymph with abdomen and thorax 
quite same as in adult, and hardly to be described as thysanu- 
1iform. Larva and nymph not so bristly as adult, and show- 
ing no anal cerci. One adult shows a globular bladder-like sac 
attached to venter. 
Wings (anterior) hemelytral both in appearance and func- 
tion, about three times as long as wide, with strong heavy 
veins and complete strong costa extending entirely around bor- 
der, appressed to the abdomen which they cover except anal 
end when abdomen is much swollen. One closed basal and 
one discal cell present; five longitudinal veins. Nymph with 
wings pad-like; larva without trace of them. Venation faintly 
visible in nymph. 
All the tibia with a pair of apical spurs. Tarsi 3-jointed, 
with a terminal pair of claws. The first tarsal joints not so 
strongly elongate in nymph as in adult. A pair of minute 
short spines on inside of middle of last tarsal joint of both 
larva and nymph shows where the joint becomes divided in 
adult into two joints. 
Other characters as given above under family heading. 
Type, the following new species :— 
