ART. 6 NOTES ON ORIENTAL SAPKOMYZID FLIES MALLOCH 41 



length of head. In other respects the genus agrees closely with 

 SaproTMjza^ the costa being similar, and the thorax with three pairs 

 of postsutural dorsocentral and two distinct sternopleurals. 

 The genus is monobasic. 



ICHTHYOMYIA CYPRINUS de Meijere 



Ichthyomyia cyprinus de Meijere, Tijdschr. v. Ent., vol. 57, p. 382, 1914. 



A testaceous colored species, with fuscous markings on head as 

 shown in Figure 30. The throax is largely brownish fuscous, the 

 dorsum gray dusted and with four dark vittae. Femora fuscous. 

 Wings infuscated, hyaline along hind margin. 



Habitat, New Guinea. 



I have examined the type specimen. 



Genus HOMONEURA van der Wulp 



This genus contains several well-defined segregates in the Orient, 

 some of them, in my opinion, entitled to subgeneric distinction; and 

 in the following pages I make use of certain characters for distin- 

 guishing these segregates, and designate them by names which will 

 serve to separate them from Homoneura in the strict sense, the geno- 

 type of the latter being pwea van der Wulp. There is some doubt as 

 to the exact identity of picea, as will be shown in the discussion in 

 this paper, but there can be no reasonable doubt that it belongs to 

 the gi'oup of species containing piceoides and a few related forms 

 included in the following key. Absolute identification must await a 

 thorough examination of the type specimen. 



I have in another paper already described some of the subgenera 

 and designated the subgenotypes of these. 



There are 143 species included in the following key, 34 being 

 from the Philippines. 



KEY TO THE SPECIES " 



1. Prealar bristle long and strong, usually over half as long as the bristle 

 behind it : mid tibia with from two to four well-developed posterior bristles, 

 which are usually as long as, or longer than, the tibial diameter (Subgen. 



Chaetohomoneura Malloch ) 2. 



Prealar bristle undeveloped, only short hairs or setulae in front of the long 

 supra-alar bristle, or if there are bristles present the mid tibia is un- 

 armed . 9. 



«The following key does not include all of the many Philipp.me species described by 

 Doctor Frey because I have found it impossible to place them in it owing to his omission of 

 many of the impoi'taJit characters made use of herein. I have been able to identify some 

 of the species however amongst those in my possession and they are included, all of them 

 having been identified as new by me prior to his paper appearing. I have given some 

 notes in the text of this paper on his species that remain unidentified by me, and it will 

 undoubtedly be possible for someone to identify them with the key in hand as either 

 additional species or synonymous with some of those included herein. There is no doubt 

 in my mind that there are many species still to be discovered in the Orient, and par- 

 ticularly in the Philippines and the Malay Peninsula. Some Oriental species are figured 

 but not mentioned in the text. 



