WERNER MARCHAND 187 



Ichneumonid sp. An unidentified ichneumonid parasite of an uni- 

 dentified Indian species of Tahanus is figured (Plate 5, Fig. 76, c) by 

 Maxwell-Leffroy and Howlett (1909), apparently the only known 

 instance- of a true ichneumonid parasitic in Tabanidae.^^ 



Parasites of the Larvce. 



On parasites of the larvae we possess only a few remarks by Hart 

 (1895), who found a larva covered with small whitish scales which 

 were possibly the eggs of a parasite. Nothing further is known.^^ 



^^On an egg mass of Tabanus atratus F., found in 1915, I noticed a small 

 Hymenopteron which I took for an egg parasite and which I found to belong to 

 Tricho gramma. However, no Trichogranima hatched from the egg mass, but 

 instead of it, a large number of the well known Phannrus, apparently tabanivorus 

 Ashmead. 



^^ To these should be added the author's own observation of Nematode para- 

 sites which were repeatedly found in larvae of Chrysops. 



