76 SYRPHID®. 
Coloration of the face lke that - tncisa, but the pe ristoma is 
black; coloration of abdomen as i 1 fronto, but specimens are 
frequently found in which the alberta. i is hike that of the variety 
melas, the abdomen being quite black with only the second seg- 
ment narrowly yellow towa rds the base. Hind femora in typic: al 
specimens entirely black, while in Jronto they are yellow at the 
base. Squamulae of a paler colour. 
Six female specimens from British East Africa: 5 miles inside 
Kenia Forest, near Luchi River; Kilolo River, N. of Mt. Kenia, 
7,700 ft.; and E. side of edge of foot of the Aberdare Mountains, 
7,300 ft., all caught in February, 1911 (7. J. Anderson). 
Var. femoralis, var. n. 
Similar to the type, with the same coloration of face and base of 
abdomen, but the hind femora are broadly yellow, with the apical 
half black or blackened, and again yellow at end. 
Type 9, and an additional specimen from Howick, Natal, 1903 
Gir: Cr eqoe). 
74, Phytomia incisa (Eristalis incisus), Wiedemann (1830). 
Distinguished from all the preceding species of its group by the 
short and regular hairs on the frons and thorax, by the yellow 
peristoma, and by the whitish and white-fringed squamule. 
This species is widely distributed in the south of the Ethiopian 
Region, and has been ‘described several times under various names 
In the present collection there are only two male specimens, me 
Chirinda Forest, x. 1905 (G. A. K. Marshall), and German han 
Africa, Uhehe District, 22—27. xi. 1910, 3,000-3,500 ft. (CS. 
Neave). 
Genus 18. SIMOIDES, Loew (1858). 
As restricted here, the species of this genus are distinguished 
not only by the separated eves of the male and by the narrower 
frons of the female, but also by the pubescence at the apex of the 
wings, which is always wanting in Phytomia. Hind femora more 
incrassate. Eyes destitute of the straight horizontal bands seen in 
Phytomia, but instead adorned with some sinuous and confluent 
dark bands, which appear to be two in number. 
I know only one true species of this genus, viz. : 
Simoides crassipes, Fabricius (1805). 
Very like the preceding species of the last group of the genus 
Phytomia, but at once distinguished by its generic characters. 
''he face is more or less yellowish, and striped with black ; the 
peristoma is vellow, with a black oblique band on each sidite the 
a femora seem to be variable, being more or less broadly vellow 
the base. 
