154 JAMES WATERSTON. 



Chrysops perspicillaris, Lw. 



$, near Salonika, vii. Taken also by Capt. Carment. 

 Chrysops quadrata, Mg. 



$, Karasouli, vii. ; 2 ?, Mikra, Experimental Farm, on donkey, vii. 

 Tabanus ater, Rossi. 



2 $ (Capt. Treadgold). 

 Tabanus autumnalis, L. 



$, Mikra, Experimental Farm, on donkey, vii. 

 Tabanus bovimis, L. 



$, near Salonika, vii-viii. Taken also by Captains Carment and Treadgold. 

 Tabanus glaucopis, Mg. 



9, Karasouli, vii. ; 2 $, Lahana, viii. 



This species frequently skeltered on the inside of our tents during the heat of 

 the day. 

 Tabanus graecus, F. 



$ (Capt. Treadgold). 

 Gastrophilus equi, L. 



2 $ captured and others observed on pony, Lahana (Capt. Boyle). 

 Stomoxys calcilrans, L. 



In latrines at Lahana and Karasouli. Also not uncommon in horse and mule 

 lines, e.g., near the beach at Kalamaria. 

 Morellia hortorum, Fall. 



2 $, off donkey, Mila-a. Mr. Collin notes that these examples differ from typical 

 M. hortorum in having the dorso-central bristles immediately behind the thoracic 

 suture shorter and weaker than the others. 

 Musca sp. 



$$, off donkey, Mikra. This undetermined species, which comes close to 

 M. lusoria, Wd., occurred in numbers. Like the Morellia, it fed on the animal's 

 festering sores and at wounds made by Tabanus, whenever the latter flew off. While 

 a Tabanus was feeding the Musca would take up their position an inch or so below 

 the puncture and drink up the blood that ran down. 

 Musca vitripennis, Mg. 



<J, off donkey, Mikra. 

 Musca domestica, L. 



During the last week of October and for the first ten days of November flies proved 

 extremely troublesome in one area. Owing to the heat, presumably, they drank 

 freely a 5 per cent, mixture of formalin and water, with a little sugar added. Large 

 numbers were killed in this way, and multitudes more were accounted for by burning, 

 swatting, trapping (both balloon and the Japanese revolving traps were used), and 

 spraying. For the latter purpose I found that an aqueous solution of formalin 

 5 per cent, was in use. This certainly killed the flies, but a good deal of fluid was 

 required, since all the flies touched were not properly wetted, and those that were 

 knocked down crawled about for some time. For the f ormalin mixture the following 

 emulsion was substituted : — J lb. bar soap boiled till dissolved in \ gallon of water ; 

 when dissolved, \ gallon of paraffin was slowly added, and \ pint of mixed ketones 



