inse;cutor insciti^ menstruus 111 



wardly. Clasper moderate, scarcely enlarged at the base, the 

 tip curved a little; spine terminal, not more than one-sixth 

 as long as the clasper. Claspette slender, sinuate with three 

 setae at its base, widening outwardly to a single seta ; filament 

 apparently continuous with the stem, greatly enlarged and 

 irregularly lobed, forming a long wide conical point at one 

 side and a small fish-tail at the other. Tenth sternites narrow, 

 moderate, the tip with a little rounded knob and group of very 

 fine teeth. Aedoeagus conical. Ninth tergites undeveloped. 



Type, male, paratypes, male and two females. No. 24334, 

 U. S. Nat. Mus. ; Caldera Island, Porto Bello Bay, Panama, 

 March 23, 1908 (A. H. Jennings, breeding number 247). Also 

 the same locality, February 14, 1909 (A. H. Jennings, breed- 

 ing No. 490). 



The species is not confined to the Atlantic coast, specimens 

 having been taken at Panama City, Panama, December 2, 

 1907 (A. H. Jennings, No. 48) ; Ancon, Canal Zone, Panama, 

 December 2, 1907 (A. H. Jennings, No. 43), and Ancon, Canal 

 Zone, Panama, August 15, 1918 (collector unknown, through 

 Dr. C. S. Ludlow). 



Mr. Jennings bred the larvae in three instances (Jennings, 

 Nos. 163, 247, 490) from salt pools in rocks near the sea- 

 coast, and once from an old kettle (Jennings, No. 48). The 

 data with the specimens lately taken at Ancon are unknown 

 to me; but Jennings bred a single male at Ancon (Jennings, 

 No. 43) "from a spring." Jennings also bred what is probably 

 this species from a salt pool (No. 246), from a brackish pool 

 (No. 262), and from a pool beside a stream with Anopheles 

 eiseni; but in these latter cases the rearings are all females, 

 or the male has been broken. A single male (Jennings, No. 

 261) "from open tree-hole beside lower course of reservoir 

 stream" is probably not an exception to the ground-pool habit. 



The larva (Jennings, No. 163) has the head subcircular, 

 mouth pointed, brushes moderate only ; antennae small, smooth, 

 with a single hair near the middle ; eyes small, round, black. 

 Skin granular-glabrous; secondary hair tufts long, weakly 

 stellate (3 to 4 hairs), stout and distinct; lateral comb of the 



