6o 



much closer together, being only narrowly separated. The palpi, 

 which in 5. inlcilni)isa.re exceedingly slender and short, and cannot be 

 seen when tiie insect is viewed from above, in the present species are 

 prominent and expanded at the tips, and, though still distinctly 

 shorter than the proboscis, are apparent!}' capable of forming a partial 

 sheath for that organ. 



The localities of the Museum series of specimens of this common 

 species include the Northern Sutor, Cromarty, N.B., and Dartmoor, 

 S. Devon ; in addition to \arious places in the midland and southern 

 counties of England, there are also specimens from Barmouth, 

 N. Wales, and Kenmare, Co. Kerry, Ireland {^Lieiit. -Colonel Yerbiiiy). 

 The dates of capture range from May 5th to September 6th. For 

 Colonel Yerbury's notes, see the previous species. 



The Museum unfortunately possesses no specimens of HiEinatobia 

 sthnulatis from localities outside the British Islands, but it is 

 probable that on the Continent it is as widely distributed as 

 6". calcitraus, although, so far as the writer is aware, it has not 

 yet been recorded from any locality outside Europe. Zetterstedt 

 states that it occurs throughout Scandinavia, but in Austria, according 

 to Schiner, it is somewhat rare. 



Genus 

 LYPEROSIA, Rondani. 



Lyperosia irritans, Linn. 



Plate 30, fig. 2. 



In this species, whicii is b_\- far the smallest of our native blood- 

 sucking Muscid.x-, the female measuring only from 4^ to 5 mm. in 

 length, the palpi, as in the Tsetse-flies (GlossiiKi) are flattened from 

 side to side and form a complete sheath for the proboscis, which they 

 equal in length. Lyperosia irritans does not appear to attack human 

 beings, but is a pest of cattle, on the backs of which it is found, show ing, 

 according to Zetterstedt, a preference for black animals ; this latter 



