NO. 6 OPINIONS 105 TO 114 5 



1. It would be necessary to erect a new genus for the warble flies of cattle 

 and goats, flies now placed in the genus Hypodcrma. 



2. The horse bots would have to be placed in the genus Oestrus (synonym 

 G aster ophilus) with hovis as type. 



3. The ruminant nasal bots would have to be placed in the genus Cephalemyia 

 with ovis as type. 



These changes have already been partially adopted in the " Review of Ap- 

 plied Entomology," Series B, Medical and Veterinary, and if you will refer 

 to recent summaries of papers of these flies in this Review, you will see that 

 the horse bots are placed in the genus Oestrus and the nasal bots in the genus 

 Cephalemyia. This change has already been accepted as authoritative by some 

 writers. 



The strict application of the Rule of Priority causing such a transfer will 

 result in the utmost confusion involving generic, subfamily, and family names 

 and designation in both veterinary and human medicine. As a teacher of medical 

 and veterinary entomology I am strongly of the opinion that Suspension of 

 the Rules, thereby validating accepted nomenclature, which has been in con- 

 sistent use for more than a century in veterinary medicine, is highly desirable. 



I am aware that Oestrus L., 1758, type ovis was suggested for adoption in the 

 Official List by the Commission in 1913, but I am not aware as to whether it has 

 been formally adopted. 



The documents were submitted by the Secretary to the Committee 

 on Nomenclature of the Entomological Society of Washington for 

 special study and this Committee has presented two reports (April 

 II, 1927, and May 12, 1928), summarized as follows: 



The genus Oestrus was described by Linnaeus in 1758 (Syst. Nat., loth ed., 

 p. 584) and included the following five species: 



1. Oestrus bovis. 



2. Oestrus tarandi. 



3. Oestrus nasalis. 



4. Oestrus haeviorrlioidalis. 



5. Oestrus ovis. 



The first species, bovis, was composite, as the original description described 

 the adult which is now known as Gastcrophihis intestinalis de Geer, while the 

 larva and habits were those common to the species now known as Hypoderma 

 bovis. None of the species was designated as type by the original describer. 



In 1810 (Consid. Generales, p. 444) Latreille named as type of Oestrus, 

 " Oestrus equi Fabr.," 1787. 



In 1818 (Nouv. Diet, d' I list, nat., vol. 23, pp. 271-274) Latreille proposed four 

 genera, removing four of the species originally included in the genus Oestrus. 

 The first species, bovis, as applied to the larva, was referred to Hypoderma; 

 the second species, tarandi, was made the type of Oedemagena; the third species, 

 nasalis, was not mentioned by name, but trompe Fabr., which is the same as 

 nasalis, was made the type of the genus Cepheneniyia; and the fifth species, 

 ovis, was made the type of the genus Cephalemyia. In this work Latreille re- 

 stricted the genus Oestrus to equi Fabr. and hae)iiorrhoidalis, the fourth species. 



