138 Annals Entomological Society of America [Vol. IV, 



hairs of host, and not swallowed, the maggots probably — almost 

 certainly — penetrating skin at point of oviposition ; Dermatobia 

 hominis is practically known to have these habits. Cuterebra, 

 Dermatobia, and probably Rogenhofera and Bogeria. 



35. Gastrophiline series — Probably a uterus in which the 

 eggs are incubated to a certain extent; eggs pediceled and per- 

 haps ready to hatch soon after deposition, deposited on hairs 

 of Equus and on Elephas, in the latter case probably on the 

 hairs; maggots issuing from chorion in mouth or oesophagus of 

 host and living in alimentary canal of same, passing out with 

 the faeces when fully grown. Gastrophilus and probably 

 Cobboldia, the latter parasitic in elephants in Africa and India. 



3G. Oestrine series — Uterus certainly present; maggots 

 deposited in nostrils of ruminants, elephant and horse, living 

 in nasal and pharyngeal cavities and issuing through nostrils 

 when ready to enter ground for pupation. Oestrus, Rhinoes- 

 trus, Cephenomyia, Cephalomyia, Pharyngobolus — last known 

 only as maggot in pharynx of elephant in Africa. 



37. Hypodermatine series — Peristomalia or facilia of adult 

 fly remote, enclosing between them what seems to be the exces- 

 sively broadened clypeus or epistoma, perhaps both differing 

 in this character of the facial plate most widely from all the 

 other Muscoidea. The sclerites of these parts need careful 

 study before they can be rightly interpreted. Perhaps a uterus 

 in which the eggs are partially incubated; eggs deposited on hairs 

 of ruminants, rodents and horse, taken into mouth of host, 

 where they hatch or in oesophagus, the resulting maggots mak- 

 ing their way slowly through the tissues to a position beneath 

 the skin where they provide an air-hole and develop rapidly. 

 Hypoderma, Oedemagena and Oestromyia. One of the most 

 remarkable, widely divergent and at the same time well known 

 groups of the superfamily Muscoidea. 



It is to be noted that the statements "dissected and drawn" 

 and "dissected" refer always to the female reproductive and 

 accessory organs; also that the term maggot as used refers 

 always to the first-stage maggot only, unless otherwise specified. 

 The term series above is not used in a strictly taxonomic sense. 

 The maggots of most of the genera mentioned above for maggot 

 characters have been drawn and described. 



Although much has been already accomplished in the inves- 

 tigations above outlined, the results as tabulated most graphic- 



