. Bulletin - United States National Museum. Science. KEVISION OF NEARCTIC TERMITES. 51 The last ventral segment of female is proportionally longer than in R. tibialis. Length to tip of wings, 8-9 mm. Soldier.—Head from nearly twice as long as broad to much more than twice as long as broad; about as broad as in R. jiavipes, but nearly one-third longer; color as in other species. Pronotum slightly emarginate in front in middle, narrowed behind; gula fully two and a half times as broad in front as at the narrowest part. (Fig. 34, 2.) Occurs from southern California (Campo, along the boundary line
. Bulletin - United States National Museum. Science. KEVISION OF NEARCTIC TERMITES. 51 The last ventral segment of female is proportionally longer than in R. tibialis. Length to tip of wings, 8-9 mm. Soldier.—Head from nearly twice as long as broad to much more than twice as long as broad; about as broad as in R. jiavipes, but nearly one-third longer; color as in other species. Pronotum slightly emarginate in front in middle, narrowed behind; gula fully two and a half times as broad in front as at the narrowest part. (Fig. 34, 2.) Occurs from southern California (Campo, along the boundary line of lower California), north through Oregon to Washington (Spokane), east to Nevada (Elko). (Fig. 37.) Tyfe, winged adult.—Cat. No. 21864, RETICULITERMES HUMILIS, new species. Winged.—Closely similar to R. tibialis; tibiae more or less infus- cated, the antennae and palpi marked with dark; the ocelli a little less than its diameter from eye, the eye hardly its diameter from the lower margin of head; the head is a trifle shorter, and the pronotum a little more narrowed behind than in R. tibialis, and the whole insect is a little smaller than that species; the wings are slightl}' grayish, the color of the body paler than R. tibia- lis, and the head especially brown. Length to tip of wings, scarcelv 9 mm. Soldier.—Smaller and with more slender head than R. flavipes. Head about twice as long as broad, sides parallel, with more numerous erect hairs than usual; mandibles as long as width of head; gula slender, more than twice as wide in front as at narrowest part; the ocellus-like spot above base of antenna very distinct; the labrum is as pointed at tip as in R. flavipes. The prono- tum about as long as usual, but a trifle more narrowed behind, deeply notched in front. The femora appear slightly more swollen than in R. flavipes. In general it is very close to R. hesperus, but the soldier has less elongate head, more hairy above; the imago has the tibiae darke
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