THK CANADIAN ENTOMOLOGIST. ' 247 



neath and overlapping. Abdomen depressed, somewhat bigibbous in front. 

 Characterized more particularly bv the form of the epigvnum. (cf. Plate X, 



lig. 6.y. 



Length, 5 mm. 

 Several females. 



Tibellus duttonii Hentz. 



One female apparently this species. 



Olios fasciculatus Simon. 

 Two females. 



Pardosa sternalis Thorell. 

 Several females and males. This is one of he commonest spiders found 

 in the intermountain region. 



Lycosa apicata Banks. 



One male. The species has not previously been taken in the region. 



Oxyopes salticus Hentz. 



One female. 



Phidippus workmanii Peckliam. 

 Three females. 



Phidippus formosus Peckham. 

 One female. 



Salticus albocinctus Peckham. 

 A male and female. Previously known from Arizona and Mexico. 



Eurypelma steindachneri (Ausserer). 

 One female. 



SCORPIONIDA. 



Hadrurus hirsutus (Wood). 



One specimen of this large form. 



Velovis mexicanus (Koch). 

 One specimen. 



Explanation of Plate X. 

 Fig. I. — Pliysocydiis tamicri, sp. n.. lateral view of body, x 10. 2. — The 

 same, epigynum. ventral view, x t,^. 3. — The same, ectal view of epigynum. 

 X T,^. 4. — Physocychts glubosiis-T^cz., epigynum, ectal view, x 33. 5. — Physo- 

 cyclits cornntiis Bks., epigynum, ectal view, x 2,Z- ^>- — Philodromus utus, sp. n., 

 epigynum, ventral view, x 38. 



A REVISION OF THE XEARCTIC SPECIES OF THE TACHINID 

 GENUS ERNESTIA R. D. (DIPTERA) 



BY DR. JOHN D. TOTHILL 

 In Charge of Natural Control Investigation's. Entomological Branch, Ottawa. 



(Continue<l from Page 2:^.0) 



Ernestia nigropalpis sp. n. 

 Head at vibrissae about as thick as at base of antennae ; vibrissae far 

 above the oral margin. Palpi black. Eyes hairy. Cheeks (below the eyes) 

 white polHnose on a black ground with black hairs coming nearly up to the 



