MOSQUITO FAUNA OF PANAMA — BUSCK 59 



specialized life habits and the consequent modifications in the anat- 

 omv of the larva suggests that this species also differs from the pool- 

 inhabiting species in disease-carrying power. 



ANOPHELES MALEFACTOR Dyar and Knab 



Bred from black-headed larvie in a still pool of drying mountain 

 stream along the upper Chagres ; also from a slow-running spring, 

 full of leaves, near Tabernilla, containing numerous small fish, so 

 many that each dip of the cup would bring one or several of the fish. 

 Evidently the fish did not play any important role in the extermina- 

 tion of these moscputo larva?. ^ The AiiopJiclcs larva and the larvae of 

 Ciilcx elevator D. & K., found in the same spring, were present in 

 considerable numbers. 



yir. Jennings obtained adults of this species inside the barracks at 

 Ciatun. 



ANOPHELES GORGASI Dyar and Knab 



Collected as adult at La Boca by Air. A. H. Jennings. The larva 

 is as yet undiscovered. 



This species is named in honor of Colonel W. C. Gorgas, head of 

 the Sanitary Department of the Canal Zone. 



ANOPHELES APICIMACULA Dyar and Knab 



A single specimen was collected at night on the outside of my 

 mosquito-screened tent in Tabernilla. 



ANOPHELES PUNCTIMACULA Dyar and Knab 



There is a single specimen of this species in the collection of the 

 U. S. National Aluseum from Colon, Panama, collected by Major 

 W. AI. Black. 



ANOPHELES ARGYRITARSIS Desvoidy 



Bred from larva in water in an old dump car near the Culebra cut. 

 The water in this car was recent, clear rain-water with no trace of 

 alga ; also bred from a shaded pool covered with alga in the native 

 village near Pedro Miguel and from a swampy pasture near Empire. 



^Thirteen specimens of these fishes were submitted to Dr. E. B. Evermann, 

 .vho determined them as four species, Tetragonoptcrus panaiiiensis Giinther, 

 Riz'uliis godmani Regan (?), Gambusia episopi Steindacher and Platypcccihis 

 mcntalis Gill, of which the two latter were the predominating species. 



