588 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



above dark, with white marks on the posterior sides in the usual man- 

 ner. Can not be named without male. 



HABROCESTUM, species. 



One female from Santa Rita Mountains, June. Smaller than the 

 preceding; cephalothorax brown; legs pale, with small brown blotches; 

 venter pale; dorsum pale, with a large black mark containing a central 

 pale spot. Ahnost certainly new, but ]>etter not described from this 

 sex. 



ASTIA MOROSA Peckham. 



A female from Santa Rita Mountains, May. 



MARPTUSA CALIFORNICA Peckham. 



One from Catalina Springs, April. 



CYRBA TiENIOLA (Hentz). 



Two specimens from Catalina Springs, May, and Santa Rita Moun- 

 tains, June. 



SYNAGELES SCORPIONA (Hentz). 



One specimen from Catalina Springs. 



PHALANGIDA. 



LIOBUNUM TOWNSENDI Weed. 



One specimen from Madera Canyon, Santa Rita Mountains, May. 



TRACHYRHINUS FAVOSUS (Wood). 



One specimen from Madera Canyon, Santa Rita Mountains, Wdy. 

 SCORPIONIDA. 



VEJOVIS SPINIGERUS Wood. 



Three specimens from Madera Canyon, Santa Rita Mountains, June. 



CENTRURUS CAROLINIANUS (Beauvois). 



Two specimens from Oracle, July, seem to belong to this species, 

 but are very pale in color. 



PSEUDOSCORPIONIDA. 



IDEOBISUM THREVENETI (Simon). 



One specimen from Madera Canyon, Santa Rita Mountains, May. 



CHELIFER HUBBARDI, new species. 

 Length, 8 mm. 



Dark red-brown, palpi brighter red-brown, legs rather yellow- 

 brown. Cephalothorax of usual shape, surface tinel}' granulate, and 



