THE CANADIAN ENTOMOLOGIST 178 



Eyes bare : abdomen with only two crossbands, situated on third and 

 fourth segments ; sides of abdomen nearly parallel. 



Length, 8.5mm. Female. Face dull yellow, the tubercle, oral margin and 

 cheeks reddish brown ; in profile gently concave below the antennal prominence 

 to the tip of the prominent tubercle thence somewhat triangularly excavated to 

 the tip of the slightly prominent epistoma ; pile fine, sparse, whitish. Antennae 

 reddish ferruginous, brownish above ; arista reddish, rather stout. Front dull 

 black, above, and a central longitudinal area, shining; above the antennae with 

 an arch similar in color to the face and connecting at the sides with the facial 

 ground color; immediately above the antennae, piceous ; pile black, rather dense; 

 posterior orbits silvery poUinose. The width at the vertex is about one-third 

 the width at the antennae. 



Thorax shining black, the mesopleurse obscurely reddish posteriorly; pile 

 white, long and silvery on the pleurae. Scutellum yellow, its base and margin 

 narrowly black, its pile black, and longer than on the thorax. 



Abdomen more slender than the thorax, elongate, opaque black, the first 

 segment, anterior third of the second, and the lateral margins of the whole 

 abdomen, shining greenish black; pile long and silvery on the basal two seg- 

 ments, on the lateral margins sparse, whitish or grayish, on the yellow bands 

 yellowish, elsewhere, black, shorter. Third and fourth segments with a narrow, 

 yellowish red band, separated from the anterior margin by about the width of 

 the band, and narrowly separated from the lateral margins ; the bands are nar- 

 rowest in the middle, gradually increasing in width to their ends. l\\ some 

 lights the lateral margins of the apical half of the abdomen appear reddish and 

 the sides of the first segment luteous. 



Legs brownish red; base of the front four femora, tips of the tarsi, and 

 the hind legs chiefly, more reddish brown. 



Wings hyaline, stigma luteous ; spurious vein unusually well developed, 

 rising from the second vein just before the base of the third longitudinal vein 

 and almost united at its apical end with the fourth vein just before the junction 

 of the fourth and fifth veins. Anterior cross-vein almost rectangular and placed 

 about one fourth the distance from the base of the discal cell. Subcostal cell 

 yellow-luteous. 



Holotype, female, Mt. Wilson. Cal., Oct. 18, 1917, (E. P. VanDuzee), 

 in the Museum of the California Academy of Sciences. 



This species is rather striking and reminds one of Mclanostoma. If 

 Matsumari's classification were accepted, it would form a new genus near 

 Syrphus, because of the position of the anterior cross-vein, and the slender 

 abdomen. Matsumari's genera seem much too artificial to be accepted and I 

 cannot agree with him, therefore T leave the jiresent species in the genus 

 Syrphus. 



Sphaeroplioria cranlirookensfs, new species. 

 Swollen portion of the hypopygium almost circular in outline when viewed 

 from above ; terminal plates very short, about four times broader than long, 

 the apical pile not dense, directed forwards, rather long, yellow. Abdomen 

 deep shining black, with reddish yellow bands. 



