IQ B. C. ENTOJIOLOGICAL SOCIETY 



NEW SPECIES OF MYCETOPHILIDAE 



By R. S. Sherman 

 Mycomya mutabilis sp. nov. 

 Male. Length 4.25 m.m. Head, face, and antennae brownish, the 

 basal joints of the last and the palpi yellow ; intennediate antennal joints 

 about twice as long as wide. Thorax brown with obscure darker brown 

 or black vittae separated by grayish pollen. Humerus yellow. Scutel- 

 lum and metanotunT brown. Two strong scutellars in addition to 

 smaller setae. Thoracic, scutellar, and abdominal setae brown. 

 Abdomen brown, posterior and lateral margin slightly yellowish. Hypo- 

 pygium yellow. Legs long and slender, yellow; fore metatarsus L/io 

 times the tibia in length, setae of hind tibia slightly less than diameter 

 of this member. Wings hyaline with grayish tinge ; veins brown, sulv 

 costa ends in the costa opposite middle of cell Ri, which is 2.5 times as 

 long as wide; the subcostal cross-vein is proximad of the middle of this 

 cell ; the basal section of the radial sector and the R-M cross-vein are 

 subequal ; R4-5 ends at tip of wing ; petiole of the media is equal to M2 ; 

 cubitus forks slightly distad of the middle of cell Ri : the wing is 4.75 

 m.m. in length, which is 2.8 times as long as the fore metatarsus. 

 Halteres yellow. Taken on Savary Island, B. C, April, 1917. 



Differs from M. maxima in being smaller, darker color, two scutel- 

 lars, lacking coxal spur, etc. It is nearer to M. sigma but differs in 

 length of intermediate flagellar joints, color of thorax, color of wings, 

 length of petiole of media as compared with M2 ; forking of cubitus 

 more distad of cross-vein and in greater length of wing as compared 

 with length of fore metatarsus, 



Platyura intermedia sp. nov. 

 Female. Length 3.5 m.m. Yellow. Antennae except the scape 

 fuscous. Thorax yellow with traces of three pale confluent stripes. 

 The base of each abdominal segment dark brown. Wings uniformly 

 Yellowish slightly tinged with cinereous in region of R2-3, veins fuscous ; 

 subcostal vein ends in costa a little proximad of base of radial sector ; 

 R2-3 rather long and oblique in position; halteres yellow. Subcostal 

 cross-vein slightly proximad of centre of subcosta ; coalesced part of 

 media about equal to the petiole. Anal vein produced to the margin. 

 Fore metatarsus slightly shorter than tibia. Two tibial spurs on middle 

 and hind tibiae. Savary Island, July 21, 1917. 



Dziedzickia vernalis sp. nov. 

 Female. Length 5 m.m. Brown, the first two joints of the antennae, 

 humeri, posterior margins of abdominal segments and the legs, yellow, 

 the latter with brownish tarsi; antennae with third joint about twice 

 its width in length ; body opaque, the hairs and bristles reddish yellow, 

 bristles of tibiae shorter than greatest diameter of latter ; wings hyaline ; 

 subcostal vein terminates in Ri near distal end of cell Ri, this cell about 



