March, 1913.] OSBURN : SVRPHIDyE IN HydROPHYTIC ArEA. 67 



Criorhina vcrhosa Walker is usually taken in early spring about 

 willow bloom, but whether it has any other relation to the swamp, or 

 whether it emerges at a time when it is compelled to seek the wil- 

 lows as the only available source of food is questionable. 



It appears that the few Syrphidx larv?e which have an aquatic 

 habitat do not frequent clear streams or pools but always stagnant 

 waters that contain a large amount of organic matter. The special 

 adaptation of the larva by which they are able to maintain respiration 

 while submerged, lies in the elongation of the terminal appendage 

 containing the posterior stigmata. This organ can be elongated so as 

 to reach the surface in shallow water and can be withdrawn. This 

 applies also to species living in sap and resin. 



THREE NEW CICINDELIDS. 



By Edw. Doubleday Harris, 

 New York City. 



Cicindela Smythi new species (fig. i). 



Head and thorax green with coppery reflections ; elytral ground dull cop- 

 pery, densely punctate green ; markings entire and all very broad, marginal 

 band merged with both lunules and one third of the elytral width ; humeral 

 lunule a trifle more than one third the elytral length, crescent shaped, recurved 

 at extremities ; middle band sharply reflected near suture, and terminating 

 with hook ; apical lunule at apex continued forward on sutural line. 



Eyes large, prominent and converging in front ; front finely rugose, a 

 single seta above the eye ; thorax densely punctate ; beneath green, shiny, 

 naked except at sides; basal joints of antenna, femur and tibia of the front 

 and middle leg, sides of thorax and body clothed with white hairs ; legs green, 

 shiny, very long — the femur of hind leg being as long as combined thorax and 

 elytra, and the combined femur, tibia and tarsus being more than twice the 

 length. 



Not as parallel in outline as chlorocephala, more metallic, elytra more 

 rugose, maculation much broader, the lunules and marginal band confluent, not 

 separated, much more pilose. Length 8-9 mm.; length hind legs 15 mm. 



Taken by Eugene G. Smyth at the ocean side of Padre Island, 

 Texas, in June, running on the sand with Saidcyi and media, not 

 plentiful, very swift on foot. 



Allied to C. chlorocephala Chevr., and possibly a variety of this 



