130 A Monograph of Culicidae. 
as the cell, the posterior cross-vein quite close to the mid ; 
halteres with ochraceous stem and fuscous knob. 
Lengith.—6 mm. 
Habitat.—Sao Paulo (Lutz); Republica Argentina, Provinces 
of Bonaerensis in Las Conchas, Zarete, Baradero (Arribalzaga) ; 
Chaco, in Formosa (S. A. Holmberg). 
Observations.—Originally described by Arribalzaga as Walker's 
C. discrucians ; it is, however, much larger and has differently 
adorned legs. The band on the hind legs will at once tell it 
from all other Janthinosoma. The description is drawn up from 
a single 9 taken by Dr. Liitz, now in the British Museum. 
Genus 14. PSOROPHORA. Robineau-Desvoidy. 
(Mono. Culicid. I., p. 259, 1901.) 
One new species of this genus has occurred ; unfortunately I 
have not seen the species. 
No fresh details need be added to the generic characters 
given in my previous volumes. 
The larvae are found in a variety of places, such as “ small 
depressions in the bed of a small stream,” “hollows in small 
pools.” Dr. Lutz has taken the larvae in bromelia water. 
They are strongly carnivorous, and even devour their own race. 
PsoROPHORA CILIATA. Robineau-Desvoidy. 
(Mono. Culicid. I., p. 261, 1901.) 
Additional localities—Pennsylvania ; District of Columbia ; 
Virginia ; Connecticut ; Indiana ; Louisiana; Arkansas. Howard 
writes of this species in North America, “ Rare in its northern 
range, and in Massachusetts and New Jersey it is found only in 
low-lying regions.” 
PsoROPHORA SCINTILLANS. Walker. 
Sabethes scintillans. Walker. 
(Mono. Culicid. I., p. 265, 1901.) 
New locality.—Trinidad (Hewlett). 
Notes.—A single g¢ and ? taken by Mr. Hewlett in the 
bush ; he says it is rare in Trinidad. 
