1898.] 9 



history, but also for specific characters, I have been compelled to rely 

 upon Prof. Brauer's " Monographie der (Estriden " — that storehouse 

 of information upon everything connected vrith the present group. 



The species of (Esfrifice parasitic upon British deer, so far as at 

 present known, are three in number: — Gephenomyia auribarhis, Mg., 

 Pha7'i/n.qomyia picta, Mg., and Hypoderma Diana, Brauer. The larvge 

 of the two former occur in the throat and nasal passages ; those of 

 the latter species, as the generic name implies, in the subcutaneous 

 tissue. 



GepTienomyia auriharhis, Mg. — As this species and its habits were 

 described by Mr. Grimshaw when he introduced the fly as a British 

 insect,* and have also been dealt with in the foregoing paper by Mr. 

 Bloomfield, I need only add a few supplementary details. According 

 to Brauer, the perfect insects of C. auriharhis may be met with from 

 May to July, though the majority of individuals appear in May, and 

 they are of more isolated occurrence in July.f Larvae in the third or 

 final stage are to be found in numbers in the throat of the red deer in 

 February ; they leave the host from the beginning of March to April, 

 and the pupae may be looked for at the end of March and commence- 

 ment of the latter month. J 



The full grown larvge of Ceplienomyia radkj be distinguished from 

 those of Pharynqomyia picta, Mg., which are also parasitic in the 

 throat of the red deer, by the fact that their short, fleshy antennae, 

 which are situated immediately in front of the mouth-hooks, are in 

 contact at the base, while those of Pharynyomyia larvae are widely 

 separated. 



In addition to C. atiribarbis, three other species of Cephenomyia are found in 

 Europe, viz. : C. stimulator, Clark, C. trompe, Fabr., and C. Ulrichii, Brauer. 

 Of these, C. stimulator is parasitic upon the roe {Capreolns capraea, Grray), C. 

 trompe upon the reindeer {Rangifer tarandus, L.), and C Ulrichii upon the elk 

 {Alces machlis, Ogilbj), and their larvae are to be found in the throats of their 

 respective hosts. 



It is quite possible that Ceplienomyia stimulaiof will one day also be recognised 

 as British, and entomologists living in parts of Dorset and Scotland where roe deer 

 occur would do well to look out for it. Brauer states that this species is on the 



* P. H. Grimsliaw, " On the Occurrence in Ross-shire of Ceplienomyia rv.fiharbis, a New 

 British Bot-Fly parasitic on the ited Deur :" Annals of Scottish Natural History, 189.5, pp. 155-158. 

 Gritnshaw follows Brauer in his choice of the specific name. The species was described by its 

 author, Meigeu, twice over : on p. 171 of Vol. IV of the " Systematische Beschreibung," as (FMrv.s 

 auribarljU, and again on the following page fp. 17i!) as (E. ruflbarbw. Brauer ron.sidered auri- 

 barbis to be a variety, and on that account elected to designate the species by the later name. 

 This, however, Vjoing contrary to the rules of priority, cannot be admitted. 



t I am informed by Mr. C. W. Dale, of Glanvilles Wootton, that he took a single specimen 

 of this species .at Loch Kannoch, Perthshire, on June l-'ith, 18'.)t; ; it came flying round his head. 



t It should be i-eiiiarked that these dates refer to Austria, and may require slight alteration 

 in the case of Great Britain. 



