NO. 1822 NEW SPECIES OF AMERICAN MOSQUITOES 259 



CULEX LACHRIMANS, new name 



Ciilex aikenii Dyar and Knab (not Gnophodcoiiiyia aikcnii Aiken), 

 Proc. U. S. Nat. Mus., vol. 35, p. 61, 1908. 



On account of the above-described facts, we are obliged to change 

 the name of our CuJex aikenii. 



DINANAMESUS, new genus 



Metanotum without setae. Antennae of the female with the second 

 joint about eight times as long as wide, third and fourth together 

 longer than the second, last joint slender; of the male, the second 

 joint about six times as long as wide, the third nearly as long as the 

 second, the succeeding joints subequal, the terminal joint enlarged 

 into a slight knob, the hair-whorls as in the female. 



DINANAMESUS SPANIUS, new species 



Female. — Proboscis rather long and stout, black-scaled. Occiput 

 dark-scaled, the margins of the eyes white. Mesonotum brown- 

 scaled, with numerous coarse dark bristles, particularly in the ante- 

 scutellar region and at the bases of the wings. Abdomen somewhat 

 compressed towards the tip, blunt, the cerci small, vestiture above 

 brown with bronzy luster, beneath paler ; tip of the abdomen coarsely 

 hairy. Wings hyaline, the scales of the veins brown, long, narrowly 

 ovate to ligulate ; those of the costa with a strong bronzy luster. Legs 

 with the tibiae rather short and stout, bronzy brown-scaled above, 

 pale-scaled beneath to near the apex. Tibias and tarsi uniformly 

 bronzy brown-scaled. Claws simple. Length, 2.5 mm. 



Male. — Antennae much longer than in the female, the hairs of the 

 n'horls slightly longer. Proboscis longer, slightly enlarged towards 

 the apex. Abdomen compressed basally, enlarged towards the tip, 

 the claspers large and stout. Coloration as in the female ; claws of 

 the fore and middle legs equal, one claw with a long basal tooth. 

 Length, 2 mm. 



Two specimens, bred from larvae in crab-holes, Corozal, Canal 

 Zone, Panama, and Coscojar River, Porto Bello Bay, Panama (A. H. 

 Jennings). 



Type no. 12052, U. S. N. M. 



This genus is allied to Deinocerites, differing in the reduced length 

 of the second antennal joint. It is a more ancestral form in this 

 respect. 



