June, 1914.] Alexander: Craneflies From Costa Rica. 117 



Subfamily LIMNOBIN^. 

 Tribe Limnobini. 

 Genus DICRANOMYIA Stephens. 

 Dicranomyia omissa Alexander. 



One male and one female specimen from near Cartago, C. R., 

 altitude 5,000 feet. They were taken on Dec. 15, 1909, over mud on 

 the south slope of Irazu, by Dr. P. P. Calvert. One female from the 

 Rio Siquiares, Turrucares, C. R., on Dec. 19, 1909. The specimens 

 from Irazu are much larger than the type but undoubtedly belong to 

 this same species. 



Genus RHIPIDIA Meigen. 



Subgenus Conorhipidia new subgenus. 



I propose this new subgeneric term for those species of the genus 

 in which the mesonotal pr?escutum is produced dorsad into a promi- 

 nent conical protuberance. Two species are known to me, coiiica 

 Alexander, which is the type of the subgenus, and the smaller form 

 described below as pnnctipennis. 



Rhipidia (Conorhipidia) punctipennis new species. 



Thoracic mesonotum produced into a conical point ; wings with dark mark- 

 ings small and sparse. 



Female, length, 5.3—5.6 mm. ; wing, 6.8 mm. 



Female. — Rostrum and palpi dark brown ; the antennas light brown with 

 pale hairs, the petioles of each segment pale. Head light gray. 



Pronotum and cervical sclerites brown. Mesonotal priescutum with a con- 

 spicuous conical protuberance as in the subgenus ; pale yellow in front, rich 

 brown behind the conical point ; scutum, scutellum and postnotum brown. 

 Pleurae light yellow, except the meso- and meta-pleuras above the coxx, which 

 are brown ; a shiny brown spot before the root of the wing and another near 

 the stigma. Halteres pale, the knob scarcely darker. Legs, fore coxae yellow, 

 hind and middle coxae brown ; trochanters, femora and tibiae light yellow, the 

 tarsi a little more darkened. Wings pale yellowish hyaline with a few scattered 

 brown dots as follows: one at the origin of Rs ; one on crossvein r; one at the 

 base oi R 4 -\- 5 ; one at the fork of Cu on Cui i, indistinct dots at the tips of 

 the veins; a rounded brown spot before the tip of 2d anal. Venation as in 

 fig. I. 



Abdomen yellowish brown with a row of about five brown marks on the 

 pleurae, the most anterior of which is very small, rounded. 



Holotype, $, Rio Siquiares, Turrucares, C. R., alt., 2,200 ft.; Aug. 14, '09; 

 (Dr. P. P. Calvert). 



Paratype, J, with the type. 



