Pomona College Journal of Entomology 475 



ing rare soutlnv/in], wlicre it stinis to be replaced by gracilis. Shasta Springs, 

 San Francisco, Pacific Grove, Stanford, etc. (author). 



Genus Scolopocryptops Newport 



Tliis genus, represented by only three or four known species, is represented 

 in the faunas of China and of North and South America. 



The genus is very close to Otocryptops in nearly all important structural char- 

 acters, but di tiers in having eleven pairs of spiracles instead of the ten of the 

 latter genus, the thirteenth body segment bearing the extra pair. 



One species is at present known from North America. 



Scolopocryptops miersii Newport 



Extremely variable in color. Most adults dark brownish black; legs yellow, 

 the last pairs and the antenna' proximally mingled bluish green and yellow. 

 The three proximal articles of the antennae smooth and shining. Prosternum 

 with angle at each side more or less produced into a tooth-like process. Femur 

 of prehensorial feet bearing on mesal surface a rather large and stout basal tooth 

 wliich at its base is one-sixth as wide as the femur. Ventral plates without me- 

 dian furrow. Legs nearly glabrous. Legs back as far as the nineteenth pair 

 with two tibial and one tarsal spine, most claws unarmed at base. Prefemur of 

 anal legs with a stout spine beneath and a smaller one within. Length up to 

 100 mm. or more. 



Doubtfully recorded from California. However, it is widespread in the 

 southeastern states and through Mexico, southward to Brazil, and it is naturally 

 to be expected within this state. 



Genus Anethops Chamberlin 

 The species listed below is the only representative of this genus known: 

 Pairs of legs twenty-one. Spiracles ten pairs. Sterna with a median fur- 

 row in some, crossed by a transverse impression. Antennae composed of sev- 

 enteen articles, thickened proximally. Processes of pseudopleurK ending in a 

 single spine. Tarsi of all legs excepting the last ones unsegmented. Claw of 

 anal legs not of unusual size, armed at base with spines. 



Anethops occidentalis Chamberlin 



Ferruginous, feet pale. Most ventral plates with a cruciform impression, 

 the longitudinal furrow deepest. Prosternum without dental plate. Tooth on 

 femur of prehensorial feet small, acute. Length ad 35 mm. 



Known only from type specimen taken in San Gabriel canyon, Los Angeles 

 county. 



Genus Cryptops Leach 



A cosmopolitan genus represented by more than two dozen known species, 

 some of which range farther north than any others of the Scolopendroidea. 



Pairs of legs twenty-one. Pairs of spiracles nine. Antennae normally with 

 seventeen articles, the number sometimes less. Dorsal scuta with two longitudi- 

 nal furrows and often also a median keel. Sterna with distinct cruciform im- 

 pressions. Prosternum without anterior extensions and with no dental plates. 



