Se, INSECTS AFFECTING DOMESTIC ANIMALS. 
Professor Verrill (Ext. and Int. Parasites Dom. Animals, p. 24) men- 
tions Dermatobia noxialis as laying eggs in the backs of sheep and 
cattle, and that ‘it also attacks men in the same way, forming painful 
tumors beneath the skin. The same or a similar species also affects 
the dogs in tropical America.” 
In a note appended to Professor Verrill’s report there is a record of 
the occurrence of what is conjectured to be larve of the same insect, 
taken from a young woman in Mississippi. 
And, quite recently, in an interesting article by Dr. Matas, published 
in Insect Life (Vol. I, pp. 76 and 80), we have an account of the extrac- 
tion of three parasites from a man who was oviposited in while bathing 
during a trip in Spanish Honduras. The account agrees in all partic- 
, Py : son re . 
Fs CBE n uy ne 
Fia. 55.— Dermatobia noxialis: larva; a, ventral aspect and appearance of tephalic and caudal extrem- 
ities, also the three rows of spines, single below, and the point where the double dorsal rows end; 
b, dorsal view shows that the three rows of spines single below are double above—greatly enlarged 
(from Insect Life.) 
ulars with previous accounts of infection from this pest and emphasizes 
the fact of its injurious nature. 
We do not wish to attempt here a solution of the mixed synonomy of 
this species, or ake any dogmatic assertions as to the accounts, all 
referring to one and the same insect. That should be demonstrated by 
the rearing of flies in the region where bots abound. It may be said in 
passing, however, that when occurring in man the larva must in the 
great majority of cases be killed before maturing, and hence the multi- 
plication of the species be accomplished by the infection of some of the 
lower animals. 
Treating the accounts in a body, there is certainly no doubt as to the 
injurious nature of the pest, for, while most reports are devoted natu- 
rally to presenting its injuries to man as of greatest interest, enough is 
said to prove that dogs and other animals are greatly troubled by them. 
