302 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxi. 



lu order to complete, so far as possible, our knowledge of tlie Diptera 

 of Japan, I add herewith a description of a new Syrphid from that 

 country not represented in the collection from the university: 



SPHIXIMORPHA PLEURALIS, new species. 



Male and female: Head and its members black, the antennal style 

 except its base, the lower corners of the front, and the face, except its 

 upper edge and a median vitta, yellow; antennal process reddish 

 brown, almost as long as the horizontal diameter of the head at its 

 base, of an equal length with the first antennal joint; first two joints of 

 antennae somewhat polished, the third opaipie, yellowish-brown prui- 

 nose. Thorax black, a yellow spot on each humerus, and in the male 

 with another at each end of the transverse suture of the mesonotum ; 

 scutellum black, margined with yellow. Abdomen black, the broad 

 hind margins of the second and third segments and base of the second 

 yellow, the nariow hind margin of the fourth reddish; ))etiole of abdo- 

 men short and thick, these(;ond segment in the fenuile three-lourths as 

 long as wide, in the male slightly longer than wide. Legs black, the 

 trochanters, broad apices of the femora, tibiae except a median band 

 on each, and usually the tarsi, except the apex of each, yellowish-brown. 

 Wings of male hyaline, the portion in front of the third vein and along 

 the fifth in the second basal cell brown; in the female brown, the lower 

 outer corner of the first basal cell, the first posterior cell excei)t the 

 front portion, the discal and third posterior cells except the base of 

 each, also the whole of t he second i)Osterior cell, hyaline. Halteres yel- 

 low, the base of the peduncle brown. Length, 17 to 21 mm. Three 

 males and one female, presented to the writer by Prof. Carl F. Baker, of 

 Auburn, Alabama, 



Type.— No. 39G1, U.S.N.M. 



The report in detail is as follows: 



Family CULICIDAE. 



CULEX SUBALBATUS, new species. 



Female: Head and its members black, except the basal half of the 

 second antennal joint, which is yellow; the first joint, and the occiput 

 next the eyes, covered with white tomentum; proboscis curving down- 

 ward toward its apex. Thorax brownish-black, the sides and several 

 spots on the pleura covered with white tomentum, a tuft of black hairs 

 above the insertion of each wing; scutellum, metanotuni, and posterior 

 angles of the thorax yellowish brown. Abdomen brownish-black, 

 thickly covered above with black tomentum, the under side of each 

 segment bearing a fascia of silvery-white tomentum, which is prolonged 

 upon the sides of the segments. Coxae yellowish-brown, the anterior 

 sides of the front ones and the outer sides of the middle aiul hind ones 

 covered with silveiy- white tomentum; femora black, sometimes more 



