LATIIYROPHTHALMUS. ER1STALODES. 87 



on the hind border of second, third, and fourth segments with a 

 small dullish black band; genitalia shining black, small; hairs 

 pale yellowish, rather long, dark on the black binds ; venter 

 yellow, black on the extreme border of the fourth segment. 

 Femora black, the four anterior ones yellow at base and at end, 

 the two posterior only at the base but broadly ; tibiaB black, with 

 whitish base, which is broader on the four anterior ; tarsi yellow, 

 last two joints of the hind pair dark brown ; hair whitish on the 

 pale-coloured and black on the dark portions. Wings yellowish 

 hyaline, with a double stigma and typical yellowish veins ; marginal 

 cell short-stalked ; discal cell with a very short appendix. 



Type 3 , a single specimen from S. Nigeria, Lagos (Dr. A. 

 Connal). 



87. Lathyrophthalmus dulcis, Karsch (1887). 



Very near trizonatus, but distinguished by the entirely black 

 hind femora, by the black ends of all the tarsi, and by the broad 

 black band on* the anterior margin of the second abdominal 

 segment. 



Originally described from Pungo-Andongo. A single female 

 from West Africa, Obuasi, Ashanti ; " caught in swamp," 27. v. 

 1907 (Dr. W. 3f. Graham}. 



88. Lathyrophthalnms dissimilis, Adams (1905). 



Very like the preceding, but differing in the eyes having a larger 

 number of confluent spots, and in the sides of the face and the 

 hind part of the dorsum being shining. 



The eyes of the male are united for a short distance, the length 

 of which is shorter than that of the vertical triangle ; owing to the 

 large number and partly confluent character of the spots on the 

 eyes, and to the rather prominent face, this species forms a con- 

 necting-link with the melanops-group. The pollen on the sides of 

 the face is very characteristic, since it allows small spots of the 

 ground- colour to be seen. 



A single male specimen from Salisbury, S. Rhodesia ( Gr. A. K. 

 Marshall} ; this is the type locality, but the present specimen 

 measures only 7 mm. in length, while Adams gave 10 mm. 



Genus 15. ERISTALODES, J/i'Xr (1897). 



This genus seems to be characteristically Ethiopian, and has 

 few, if any, representatives in the Oriental Region, from which I 

 do not know a single species with certainty (jf kobusi and 

 fariv*). 



The species before me may be distinguished as follows : 



1 (8) Scutellum yellow, transparent, or only 

 blackened towards the base, clothed 



iitirelv or at least on the hind border 



