DERMATOBIA CYAXIVENTR1S 



597 



resemble one another in the club-shaped or tadpole-like appearance (called macaque 

 in Cayenne, mayacuil [mayoquil] in Mexico), the third is swollen spindle-shaped 

 (Berne, called torcel). Segments 2 to 4 in the club-shaped larvae are closely beset 

 with small black spines, segments 5 to 7 bear at the anterior border a complete ring 

 of strong black hooks, segments 4 to 6 a similar ring, which, however, is interrupted at 

 the ventral surface. The four last segments forming the tail are smooth, only at the 

 posterior end are there small spines. The arrangement of spines of the third stage 



FlG. 412. Dennatobia noxialis, Goudot. 



FIG. 413. Larva of Der- 

 inatobia cyaniventris in its 

 natural size and magnified. 

 (After Blanchard.) 



FlG. 414. Larva of Der- 

 mal obia cyaniventris. Enlarged- 

 (After Blanchard.) 



differs from this. Italian workmen that have been employed in Brazil show the 

 presence of Dermatobia larva? on their return (Blanchard, in Bull. Soc. Ent. 

 France, 1893, P- 24; Bull. Soc. centr. de Med. vet., 1896; Ann. Soc. Ent. 

 France, 1894, Ixiii, p. 142 ; Ward, H. B., in Mark Annivers. Vol., Article 25, 

 p. 483, New York, 1903). 



{Dermatobia cyaniventris, Macquart, 1843, is said not to be the same as noxialis 

 (vide Brauer, " Mono. Oestriden," 1863, p. 266). It is known by various other names, 



