June, 1914.] Alexander: Craneflies From Costa Rica. 123 



Tribe Hexatomini. 



Genus ERIOCERA Macquart. 



Eriocera exquisita new species. 



Wings uniform dark brown ; color entirely reddish orange except the 

 mesonotum which is dark brown ; no black on abdomen. 



Male, length, 11. 6-13 mm.; wing, 11. 5-12. 4 mm. 



Male. — Rostrum reddish brown ; palpi short, basal segment orange, tip 

 brown ; first segment of the antennae orange, second segment light reddish 

 brown ; flagellum dark brown ; head orange, the frontal tubercle small, scarcely 

 notched in front. 



Pronotum light yellowish orange. Mesonotal praescutum dark chestnut 

 brown on the sides, the middle line broadly paler, brightest, almost orange, 

 in front, indistinctly divided by a median line ; scutum dark brown ; scutellum 

 and postnotum yellowish orange. Pleurae light orange yellow. Halteres 

 black. Legs, coxae yellow, trochanters, femora, tibiae and tarsi brown. Wings 

 uniform dark brown, veins brown. Venation as in fig. 5. 



Holotype, male, Alajuela, C. R. ; alt. 3,100 ft.; Sept. 9, '09 (Dr. 

 P. P. Calvert). 



Paratypes, 2 males, with the type. 



Type in the collection Acad. Nat. Sci. Phil.; one paratype in the 

 author's collection. 



Subfamily TIPULIN^. 



Tribe Dolichopezini. 



Genus BRACHYPREMNA Osten Sacken. 



Brach3rpremna dispellens Walker. 



One male from Bonnefil farm, Rio Surubres, C. R. ; alt. 700 ft. ; 

 Oct. 19, '09 (Dr. P. P. Calvert). 



Tribe Tipulini. 



Genus TIPULA Linnaeus. 



Tipula obliquefasciata Macquart. 



One female from Cachi, C. R. ; Mar. 8, '10. 



Fig. I 

 Fig. 2 

 Fig. 3 

 Fig. 4 

 Fig. 5 



Explanation of Plate 2. 



Wing of Rhipidia (Coiiorhipidia) punctipennis n. sp. 



Wing of R. (Rhipidia) cosfalis Williston. 



Wing of Rhabdomastix {Rhabdomastix) septentrionalis n. sp. 



Wing of Molophilus orion n. sp. 



Wing of Eriocera exquisita n. sp. 



