250 MAJOR W. S. PATTON. 



Europe and in North and South America. As in the case of the Oestrinae, the 

 females are viviparous and deposit their larvae at the entrances of the nostrils, the 

 larvae then migrating up into the frontal sinuses, and down, even into the oesophagus. 



Cephenomyia auribarbis, Mg., is a common parasite in its larval stage in the 

 red deer in Europe ; the larvae of C. tdrichi, Br., in the elk ; C. trompe, L., in the 

 reindeer ; C. stimulator, Clark, in the roe ; and C. abdominalis, Aldrich, from the 

 Adirondacks, New York. C. pratti is parasitic in its larval stage in the American 

 elk, the mule deer, and several other deer in North America, C. phobifer is only 

 known in its adult stage from North America, and C. macrotis has been recorded 

 in its larval stage from the mule deer in North America. 



Semi-specific Myiasis-producing Diptera. 



In this group I include all those flies which, though normally breeding in the 

 bodies of dead animals, and even in vegetable matter, will occasionally lay their eggs, 

 or deposit their larvae, in the diseased tissues of man and animals. The female fly 

 is in each case attracted by a foul discharge from a sore, wound or diseased organ, 

 such as the nose or ear, or even in soiled wool. The fohowing species belong to this 

 group : — 



Calliphoya erythrocephala, Mg. 

 vomitoria, L. 

 quadrimaculata, Swed. 

 {Anastellorrhina) augur, L. 

 Cochliomyia [Chrysomyia) macellaria, L. 



„ viridula, R.D. 



Chrysomyia mcgacephala. F. {dux, Esch.). 

 marginale, Wied. 



albiceps, Wied. {rufifacies, Guerin). 

 varipes, Macq. 

 Pollenia stygia, F. 

 Phormia regina, Mg. 

 Cynomyia cadaverina, R.D. 

 Lucilia sericata, Mg. 

 „ caesar, L. 



argyricephala, F. {serenissima, Macq.). 

 tasmaniensis. 

 Sarcophaga ruficornis, F. 



chrysostoma, Wied. 

 plinthopyga, Wied. 

 Aphiochaeta xanthina, Speiser. 

 rufipes, Mg. 



A few notes on the above species may be useful. 



Calliphor a. —AW the species belonging to this genus of blowflies are large robust 

 insects of a dark blue colour, often with lighter patches on the abdomen. The palpi 

 are nearly always reddish, the legs black, and the thorax adorned with large bristles. 

 The females, which are oviparous, occasionally lay their eggs in living tissues of man 

 and animals, though normallv ovipositing in decaying animal matter ; the habit of 

 ovipositing in diseased tissues is not well estabhshed in the species of this genus. 



Cochliomyia.— These blowflies can be distinguished at once from their Old World 

 allies of the genus Chrysomyia {Pycnosoma) by the well-marked dark dorsal 

 thoracic stripes. C. macellaria, the 'notorious screw- worm fly of tropical America, 

 like its ally, Chrysomyia bezziana, will lay its eggs in any diseased tissues, but unlike 

 it, will also breed freely in the bodies of dead animals, and even in decaying vegetable 

 matter. Its control is therefore a much more hopeless task than that of Chrysomyia 



