THE CANADIAN ENTOMOLOGIST 379 



but two- or more often, one jointed. Zygetliobius sokarieiitis is the third 

 species of its genus to be made known. 



T. Bothropolys xanti Wood. 



One specimen was taken at Mill Valley. This species is abundant 

 southward, the author having numerous specimens from Stanford, Pacific 

 Grove and Monterey. Santa Barbara, San Bernadino, Los Angeles, Santa 

 Monica, Claremont, etc. 



2, Bothropolys pusio (Stuxberg). 



1875. Lithobius pusio Stuxberg, Ofvers. af Kgd. Vet.-Akad. 



Forhandl., No. 2, p. 67, No. 3, p. 31. 

 1909. nee. Litliobius pusio Chamberlin, Ann. Ent. Soc. Ameiica, 

 p. 187. 

 Brown, often of reddish caste, the head not darker, concolorous with 

 dorsum ; some of the major dorsal scuta in some, with the caudal 

 border very dark, and some with a median dark stripe. Antennas reddish 

 brown, pale distad. Prosternum and prehensorial feet brown, the posterior 

 ventral plates of same colour; the legs and most of venter lighter brown, 

 the caudal pairs of legs commonly pale distad. 



Anteniice short, composed of 20 articles of moderate length, which 

 gradually decrease in size from the second to the ultimate. 



Ocelh distinct, usually thirteen in number, and arranged in three 

 series, ihu<=, i + 5, 4, 3. 



Prosternal teeth 6 + 6-6+7, stout, darkened, uniform in size and 

 si)acing, all apically, bluntly rounded. 



Angles of none of the dorsal plates ]:)roduced. 



Coxal pores of vaiious sizis, sma 1 and very small, mostly arranged 

 in two or three series. Thecaudil series on each coxa consists of the 

 larger pores, usually 4 or 5 in number ; the next series is composed of 

 smaller pores, and the third or most anterior of the smallest ; the second 

 and third series often confused or forming a single irregular row. Pores 

 in number usually from 7 or 8 (12th coxa) to 12 (r3th-i5th coxae) in 

 number on each coxa. 



Last two pairs of coxpe armed laterally and ventral'y ; the last three 

 pairs armed dorsally. 



Spines of the first legs 2, 3, i ; of the penult i', 3, 3, 2, with two 

 claws ; of the anal r, 3, 2, i, the claw single. 



Genital appendages of the male as usual in the genus, distinctly two 

 jointed. 



