IMM 



OcjftajTL. 



Gymnoso- 



nu. 



Echino- 



162 INSE 



IMCCU. Antennas distant, snb-parallcl, last joint subqnudratc, 

 s - -y ^ with a biarticulate seta. (Hody short; abdomen de- 

 pressed, semicircular ; wings large.) 



1. 1',tri,ib:lit. Leacli. 

 Mute* licmiplera. Linn. 

 Inhabits Europe. 



Stirps 10. Antennae frontal, as long as the face ; pa'- 

 pi internal; halteres entirely, or partly concealed ; 

 wings divaricating. 



GENUS DCCCIV. MUSCA, of authors. 

 Antenna with the third joint very much longer than 

 the others ; abdomen moderately long, subacuminate. 

 Sp. 1. Vomibxia. Latr. 

 Common blue-bottle fly. Inhabits Europe. 

 GENUS DCCCV. OCYPTERYX, Leach. OCYPTERA, Latr. 



EXOHISTA, Meig. ERIOTHRIX, Meig. 

 Antenna? with their last joint longer than the others ; 

 abdomen distinctly annulated, rounded. 

 Sp. 1. Latcralis. Leach. 

 Inhabits Europe. 



GENUS DCCCVI. GYMNOSOMA, Meig. Leach. 

 Antennae with their last joint longer than the others ; 

 abdomen semicircular, subuniarticulate. 

 Sp. 1. Rotundata. Meig. 

 Inhabits Europe. 

 GENUS DCCCVII. ECHINOMYIA, Dumeril, Latr. TA- 



CHINA, Meig. Fabr. 



Antenna; with their second joint longer than the 

 others ; abdomen subglobose, and very bristly. 

 Sp. 1 . Grossn. ' Latr. 

 Inhabits the European woods. 



Tsehin*. GENUS DCCCVIII. TACHINA. 



Antennae with their second joint longer than the 

 others ; abdomen ovate, rather bristly. 

 Sp. 1. Fera. 



Musca/era. Linne. 

 Inhabits the European woods. 



TRIBE XV. OESTRIDES. 



The larvae of all the insects composing the present 

 family reside in the frontal sinuses, under the skin, or 

 in the stomachs, of graminivorous mammalia. Their 

 curious economy has been admirably detailed in the 

 third volume of the Transactions of the Linnean Society 

 of London, by Mr Bracy Clark, who has lately repub- 

 lished his Dissertation, under the title An Essay on the 

 Bots of Horses and other animals. London, 1815. 

 Oestrus. GENUS DCCCIX. OESTRUS, of authors. 



Wings, with the two exterior hinder cells complete, 

 the other hinder cells terminal. Thorax with its sur- 

 face unequal. Abdomen with its point deflexed ; of 

 the female acuminate. Eyes distant; of the male 

 closer than those of the female. 

 , * T/ior<uc roughish, with elevated points. 



The larvae of the species of this division of the genus 

 inhabit the frontal sinuses. 



Sp. 1. Ovis. CEslrus ovis. Clark, Trans. Lin. Soc. iii. 



Inhabits the frontal sinuses of the sheep in the larva 

 state ; the perfect insect is found on walls and stones 

 in the vicinity of sheep-folds. 



* Thorax tvil/i square shining naked spots. 



The larvae of this section reside beneath the skin of 

 herbivorous mammalia. 



Sp. 2. Bovis. 



fEstrus Bovis. Clark, Trans. Lin. Soc. iii. 



The larvae of this species, named by the peasants 



Warbles or Wornils, " are found ben?Mli the skin on 

 the backs and loins of oxen, causing Illinois as large as 

 pullets eggs." The perfect insect or gadfly^ is found 

 about the end of summer, and is much dreaded by 



I.-.Trtt*. 



GENUS DCCCX. GASTEROPHILUS, Leacli. 

 of authors. 



OESTRUS, Gasteroghi- 



lu.-. 



Wings, with all the hinder cells terminal. Thorax, 

 with its surface smooth. Abdomen, with its extremi- 

 ty inflexed; of the female, very much elongated and 

 attenuated. Eyes, in both sexes, equally distant. 



The larvae of the Gasterophili, as their name imports, 

 inhabit the stomach of herbivorous quadrupeds, and 

 are called bots ; the perfect insects Bot-flies. 



Sp. 1. Equi. Leach, Mem. Wern. Nat. 'Hist. Soc. 

 vol. ii. 



(Estrus Bovis. Linne. 



(Estrus I'.quii. Clark, Trans. Lin. Soc. vol. iii. 



The larva inhabits the horse. 



SECT. II. EPROBOSOIDF.A. 



The larvae are nourished within the abdomen of the 

 mother, and when full grown, are passed in the form 

 of an oviform pupa, covered with the indurated skin of 

 the larva. We have described the species in the se- 

 cond volume of the Memoirs of the Wernerian Natural 

 History Society of Edinburgh. 



iilirps 1. Wings, two; the hinder cell only com- 

 menced. Thorax anteriorly entire, accuminated. 



GENUS DCCCXI. HIPPOBOSCA, of authors. Hippobosc*. 



Ocelli, none. 

 Sp. 1. Equina. Linne. 



Inhabits the horse, and is vulgarly called Forester. 

 Stirps 2. Wings, two ; the hinder cells complete. 

 Thorax anteriorly notched for the reception of the 

 head. 



* Wings of nearly an equal breadth l/iroiigfiout. 

 GENUS DCCCXI1. OLFERSIA. FESON.IA, Leach. Olfcrsia. 

 Ocelli, none. 



Sp. 1. Spinifera. Leach, Mem. Went Soc. vol. ii. 

 GENUS DCCCXIII. ORNITHOMYIA. Latr. Oliv. Leach. Ornith - 

 Ocelli, three, situated hi foveoke. 

 S/). 1. Avicularia. 

 Hippobosca Avicularia. Linne. 

 Inhabits the black grouse and tit pipit. 



** IVmgs acciimiiiuted. 

 GENUS DCCCX1V. STENEPTERXX, Leach. Stenep'.crix. 



Ocelli, three. 



Sp. 1. Hinindinis. 



Hippobosca hirundinis. Linne. 



Inhabits the nests and bodies of the house-swal- 

 low. 

 GENUS DCCCXV. .OXYFTERUM, Kirby, MSS. Leach. Oxypterum. 



Ocelli, none. 



Sp. 1. Kirbyamtm. 



Ojcypterum Kirbytinum. Leach, Mem. Wern. Soc. 

 vol. ii. 



Inhabits England. 



Slirps 3. Wings, none. Thprax anteriorly notched 

 for the reception of the head. 



GENUS DCCCXVI. MELOPHAOUS, Latr. Leach. Melopha- 

 Qcelli, none. 

 S/>. 1. OuitiHS. 

 Hippoboica ovina. Linne. 

 Inhabits the sheep. 



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