ANOPLURORUM BRITANNIJE. 33 



Hasmatopinus Asini. Stepli. Cat. pt. ii. p. 329. Pediculus Asini, Linn. 

 Syst. Nat. ii. p. 1018, 12. Fabr. Spec. Insect, ii. 478, 10. Syst. Ent. 

 806. 9. Turt. iii. 695. Albins Aran. 76. tab. 51. Recli Expe, tab. xxii. 

 fig. 1. Opera, tab. xxv. Pediculus macrocephalus. Burmeister 

 Gen. Insect. Ord. Rhyn. spe. 18 1 



Ferruginous yellow ; head very long, narrow, anteriorly, 

 with two black patches on each side near the apex ; tem- 

 poral region broad, and much produced on each lateral 

 margin ; occiput contracted and lengthened ; antennae 

 short, cylindrical joints nearly equal ; eyes very small and 

 black, seated in a deep sinus behind the antennae ; thorax 

 much wider than the head, transverse ; anterior margin 

 retuse ; posterior truncate, with the angles acute ; abdomen 

 large ovate, twice the width of the thorax, pale yellow- 

 white transversely rugulose and hairy, with a fuscus horny 

 excrescence surrounding each spiracula, the last segment 

 with a large angular black spot on each side ; legs short, 

 thick, and hairy : tibia and femur nearly equal ; tarsus 

 large, conical ; ungues long and slender. Length 1 to If. 



This species is common upon the Ass, frequenting the 

 mane and back. I have also received specimens from the 

 Horse, from which circumstance I suspect it is the species 

 described by Dr. Burmeister under the name of Macro- 

 cephalus ; it is most certainly the insect figured by Redi. 

 In a list of the species in the British Museum, commu- 

 nicated by J. G. Children, Esq. I find a MS. name of 

 Caballi. This I also suspect to be identical, from the 

 fact of the Asini not being enumerated, and which, from 

 its common occurrence, could not have escaped Dr. Leach's 

 observation. In colour this species is rather variable in 

 intensity, those having the abdomen nearly white is owing 

 to their having but recently emerged from the egg, or 

 cast their skin. 



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