188 INSE^CUTOR INSCITI^ MENSTRUUS 



Tipula annulicornuta, new species. 



Male. — Length, 15 mm. ; wing, 18 mm. 



Frontal prolongation of the head brownish yellow ; palpi pale 

 brown. Antennae of moderate length, obscure yellow, basal 

 flagellar segments a little darker basally, the terminal segments 

 more uniformly dusky. Head brownish yellow. 



Mesonotal praescutum obscure yellow with three brownish 

 yellow stripes, the median stripe slightly darker anteriorly; re- 

 mainder of mesonotum yellow. Pleura whitish yellow. Halteres 

 pale, the knobs brown with yellow apices. Legs with the coxae 

 concolorous with the pleura ; trochanters yellow ; femora and 

 tibiae yellowish brown, the tarsal segments dark brown ; legs 

 long, metatarsi only a little shorter than the tibiae. Wings 

 tinged with grayish yellow, the base and cells C and Sc more 

 saturated, yellow ; stigma bicolorous, the base yellow, the distal 

 third brown ; a very conspicuous obliterative area before the 

 stigma, extending from Sco into the base of cell M3, almost 

 filling cell ist M ., ; veins brown. Venation: R2 preserved; cell 

 1st M^ small, pentagonal. 



Abdomen brownish yellow. Male hypopygium with the ninth 

 tergite small, the caudal margin with two long, widely separated 

 spines. Outer pleural appendage very small, cylindrical. Dorso- 

 mesal angle of ninth sternite with a dense brush of short yel- 

 low setae, immediately basad of which arises a powerful chit- 

 inized arm, bent laterad for a short distance and thence caudad 

 and dorsad. Eighth sternite with a median brush of setae, on 

 either side of which arises a chitinized spine that bears numer- 

 ous, parallel, ridges for its whole length, the whole appearing 

 like the horns of certain antelopes, these spines decussate. 



Holotypc, male, Gifu, May 10, 1921 (K. Takeuchi). 



NOTES ON TROPICAL AMERICAN MOSQUITOES 



{Dipt era, Culicidae ) 



By HARRISON G. DYAR 



Wyeomyia (Wyeomyia) labesba Howard, Dyar & Knab. 

 Mr. J. B. Shropshire bred this species from an "air-plant" 



