86 THE CANADIAN ENTOMOLOGIST. 



uber Siid-ostasiat. Dipteren, V,' f records the species from much farther 

 west (Batavia, Java, etc.). Styringomyia didyma belongs to the typical 

 subgenus, and is extremely similar to the fossil species described by Loew** 

 and Osten Sacken, as well as to the species under consideration. All of 

 the species of the subgenus Styringomyia, as here limited, are very similar 

 to one another in venation, and the coloration is inclined to be variable. 

 6'. didyma differs from the new species as follows : The wings are shorter 

 in didyma ; Ri.s is in a direct line with Rg, whereas there is a deflection 

 at the origin of R4,5 in .S. howardi. Didyma has no spur at the curve of 

 2nd anal. The coloration of the thorax of the two species is different. 

 The male genitalia of the species have not been studied critically, and 

 must furnish the ultimate criterion. It is, of course, possible that when 

 further collections are made, intermediate stations for the genus will be 

 discovered, and then it may be proved that 5. howardi is merely a vari- 

 ant of 6'. didyma. However, I prefer to describe it as distinct at present. 

 In the end of Vol. Ill of the Monograph, p. VII, Osten Sacken came 

 forward with the surprising intelligence that the genus Styringomyia still 

 existed. He says ; ''During my passage through Stockholm in 1872, I 

 made the interesting discovery that the genus, besides its occurence iii 

 amber and coj)al, is found living in Africa. I saw several specimens 

 among the unnamed Diptera from Caffraria (from Wahlberg's voyage) in 

 the Stockholm Museum. The species was apparently different from that 

 included in the copal, which I possess." Later, in "Studies on Tipulidre,'* 

 he states, "This singular genus, originally described from specimens 

 included in copal from Zanzibar, and also in amber, has been discovered 

 since as still living in South .Africa. In the museum in Stockholm I have 

 seen recent specimens brought from Caffraria by Wahlberg." 



Despite Prof. Speiser's statement (I.e., p. 132), that Osten Sacken 

 probably referred to Elephantomyia wahlbergi Bergr., when he made the 

 last-quoted statement, I have no doubt but thit Osten Sacken saw speci- 

 mens of a true Styringomyia in Stockholm ; an error of this calibre was 

 not customary with Osten Sacken. 



Mongoma zainbesice, n. sp. 



Hololype. — 9 i brown ; length, 5.75 mm.; wSS; 5.5 mm. 



Rostrum and palpi dark brown ; antennw, fiTst two segments dark 



^Tij■ichr. voor Etitomol., .-Xpril, 1911, p. 40. 



•"Loew, H. Diplerol Beilrii^e, I. p. 7, with f. (1847). 



•Berl. Ent. Zeitschr., Bd. .XXXI, 1887 ; Heft., II, pp. 185, 186. 



