JOUENAL OF ENTOMOLOGY AND ZOOLOGY 145 



D. Pronotum simple, metathorax simple; sal- 

 tatorial organ smooth ; abdomen IV almost 

 three times as long as III. 



Genus Pseudosira 



Genus Sinella Brook. 

 There is but one species of this genus known here so far 

 and it is the same as that upon which the genus was founded, 

 curviseta. 



Sinella curviseta Brook. 



(Plate I, Figs. 1-3) 



Sinella curviseta Brook, on a new gen. of Coll. allied to Degeeria, 



1882, p. 544. Collinge and Shoebotham, Jr. econ. biol. v, p. 



114, 1910. 



Description: Color — Opaque white. Antennae long and slen- 

 der ; I short, II longer than III, IV equals II. Ocelli — Four, two 

 on each side of the head, one behind the other, some distance 

 apart. Claws — Two ; superior long, curving slightly, armed 

 with three teeth, the proximal large and opposite each other, 

 the distal smaller; inferior short, stout, one-half length of 

 su]ierior ; no tenent hairs. Furcula — Dentes and mucrones longer 

 than manubrium, dentes serrated ; mucrones small, long, teeth 

 two and a long basal spine reaching nearly to the distal tooth. 

 Segment of body greatly fused. 



Variation: Those described by Collinge are yellow in color 

 with mottlings of reddish pigment. There was no color on my 

 specimens. 



Habitat: Claremont, under flower pots in garden in Septem- 

 lier; Cucamonga Canyon; San Antonio Canyon, altitude 5000 

 feet, in black loam in grass roots. 



Collinge found his in flower pots in a greenhouse in Berk- 

 hamsted. 



Genus Isotoma Bourlet 



So far this genus is represented in our fauna by eight species. 



The body is sub-cylindrical with the abdominal segments 

 subequal, in which resjiect it is different from Entoniohrt/a. 

 The antenuiie are four-jointed, short, not much longer than the 



