7(> SYllPHIDJE. 



Coloration of the face like that of incisa, but the peristoina is 

 black ; coloration of abdomen as in fronto, but specimens are 

 frequently found in which the coloration is like that of the variety 

 mclas, the abdomen being quite black with only the second seg- 

 ment narrowly yellow towards the base. Hind femora in typical 

 specimens entirely black, while in fronto they are yellow at the 

 base. Squamulse of a paler colour. 



Six female specimens from British East Africa : 5 miles inside 

 Kenia Forest, near Luchi River ; Kilolo lliver, 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 (T. 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. 



Ti/pe $ , and an additional specimen from Ho wick, Natal, 1903 

 ( J. 'P. Gregoe). 



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 

 peristoina, and by the whitish and white-fringed squamulse. 



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, from 

 Chirinda Forest, x. 1905 ( G. A. JL. MarshaU), and German East 

 Africa, Uhehe District, 22-27. xi. 1910, 3,000-3,500 ft. (S. A. 

 Neave). 



Genus 13. SIMOIDES, Loew (1858). 



As restricted here, the species of this genus are distinguished 

 not only by the separated eyes 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 

 Pliytomia, 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. : 



75. Simoides crassipes, Fabricius (1805). 



Very like the preceding species of the last group of the genus 

 Pliytomia, but at once distinguished by its generic characters. 



The face is more or less }'ellowish, and striped with black ; the 

 peristoma is yellow, with a black oblique band on each side ; the 

 hind femora seem to be variable, being more or less broadly yellow 

 at the base. 



