166 JOURNAL OF ENTOMOLOGY AND ZOOLOGY 



antennir, the other three tubercles are grouped beliind, the 

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

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

 differ slightl}^ Claws — Two; superior very stout and slightly 

 curving, armed with a tooth situated about midway on the inner 

 margin; inferior about one-half length of su])erior, dilated at 

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

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

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

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

 others gradually beconnng longer; mncrones 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 (Marasminis) , very abundant; mouth of Ice House 

 C^anyon, altitude 5000 feet, among ]nne needles; Camp Baldy, 

 altitude 4700 feet, in rotten log; Chino swamps. 



Achorutes citri n. sp. 

 (Plate y, 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 verv long and curving, armed with one 

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

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

 of the superior. Furcula — Mncrones broad, lamellate, rounded 

 at di>.;t;d end with n vhv. Anal horns — Extremelv long, sharp, 

 four times length of panillre. 



T^nhiint: Fonrid iu o-ypp^- nbundnucp in n flume in an or?in<^'e 

 nrclmrd nefiT ClarPTiio^if. al«o the rotten or^ino'es were covered 

 Tvitb fhpi>^ ; .Tanuar^". 



Genus Xenylln Tullberg 

 This genus is characterized by the absence of the inferior 

 claws and postantennal organs ; by having the ocelli reduced 



