166 JOURNAL OF ENTOMOLOGY AND ZOOLOGY 



antennae, the other three tuliercles are grouped behind, the 

 center one being round and the other two oval with their long 

 axes parallel to the axes of the antennae, those on each side 

 differ slightly. Claws — Two; superior very stout and slightly 

 curving, armed with a tooth situated aboi;t midway on the inner 

 margin; inferior about one-half length of superior, dilated at 

 base, interrupted half way, making a sharp angle and ending 

 in a spine; one long, simple, straight tenent hair. Furcula — 

 Dentes is twice the length of the mucrones, bears six long hairs 

 or spines, the shortest one being next to the mucrones and the 

 others gradualh' becoming longer; mucrones have two teeth. 

 Anal horns — Two, twice the length of the papillae, stout and 

 curving. Integument — One long spine to each segment, except 

 at the posterior end of the abdomen where they are more 

 numerous, also two or three short curved ones on each segment. 

 Habitat: West Fork of Palmer's Canyon, in the gills of 

 mushrooms (Maras))iinis), very abundant; mouth of Ice House 

 Canyon, altitude 5000 feet, among \)me needles ; Camp Baldy, 

 altitude 4700 feet, in rotten log; Chino swamps. 



Achorutcs citri n. sp. 

 (Plate V, Figs. 2-5) 



Description: Length — 1.5 mm. Color — Steel blue. Antennae — 

 Shorter than head. Ocelli — Sixteen. Postantennal organ — 

 Four tubercles on each side of the head, oval to elongate. 

 Claws — Two; superior very long and curving, armed with one 

 tooth about midwav; inferior dilated at the liase, forming a 

 riffht angle, and extends as a long seta two-thirds the length 

 of the superior. Furcula — Mucrones broad, laTuellate, rounded 

 at distal end with a rim. Anal horns — Extremelv lono-, sharp, 

 four times leus:th of papillfr. 



TJnhifnt: Found in e-reat abundance in a flume in an oranee 

 orchard near Claremont, also the rotten oranges were covered 

 with tbp'>'' ; Januarv. 



Genus Xenylla Tulllierg 



Tliis genus is characterized by the absence of the inferior 

 claws and postantennal organs ; by having the ocelli reduced 



