90 ENTOMOLOGICAL SOCIETY 



Kaslo, ii June to 5 August, four specimens ; Ainsworth, n 

 July, two specimens ; Kokanee Mountain, altitude 8,000 feet, 10 

 August, one specimen. 



The specimen collected on June 11 is teneral. 



The two following papers were read by title : 



NEW DIPTERA FROM CENTRAL AMERICA. 

 By D. W. COQUILLETT. 



In the month of August, 1903, Prof. Carl F. Baker, of Pomona 

 College, Claremont, California, donated to the National Museum 

 a duplicate series and the unique specimens of Diptera collected 

 by himself during a trip through Mexico and Central America, 

 the only conditions being that the writer would engage to iden 

 tify the specimens and publish descriptions of the new forms. 

 The task of identifying and describing having now been com 

 pleted, the descriptions are offered herewith : 



Family CHIRONOMIDy^E. 

 Ceratopogon terminalis, n. sp. 



Black, the legs yellow, the hind tibue and their tarsi except their bases 

 brown (antennae, front tarsi, and middle tibiae and their tarsi wanting) ; 

 eyes rather widely separated, head and body polished, mesonotum some 

 what scabrous, its hairs whitish ; legs slender, devoid of spines, outer side 

 of hind tibiae and upper side of their tarsi fringed with rather long hairs, 

 first joint of hind tarsi nearly twice as long as the second; wings very 

 long and narrow, bare, whitish hyaline, the broad apex brown, apex of 

 third vein near nine-tenths of the length of the wing, this vein wholly 

 separated from the first vein and from the costa, not connected by a cross- 

 vein ; apex of first vein near one-fourth of the length of the third ; veins 

 whitish, the third vein, small cross-vein and last section of the costa 

 brown, fourth vein forks slightly before the small cross-vein. Length 

 3 mm. 



A female specimen from San Marcos, Nicaragua. 

 Type. No. 7807, U. S. National Museum. 



Family MYCETOPHILIDyE. 



Sciara trifasciata, n. sp. 



Yellow, the front, upper part of the occiput, a pair of elongate-oblong 

 spots on the mesonotum, the knobs of the halteres and the second, third 

 and fourth segments of the abdomen except the narrow front margins of 



