410 " TABANID^ 



Somerset, Hants, Sussex, Surrey, Kent, Suffolk, Berks, Wilts, Huntingdon- 

 shire, Oxfordshire, Gloucestershire, Leicestershire, Worcestershire, and 

 Nottinghamshire, ranging from June 16 to August 23. Colonel Yerbury 

 exhibited at the Entomological Society of London on November 21, 1900, 

 a specimen which had been bred on July 12, 1899, by Mr Holland of 

 the Hope Museum, Oxford, from a pupa found in sand at St Helens in 

 the Isle of Wight. It is recorded from Sweden to Naples. 



15. T. maculicornis Zetterstedt. Eyes one-banded. Frons not at all 

 shining and hardly with a dark cross-band at the level of the antennae ; 



^^ male with a long postocular ciliation (fig. 237) ; 

 ^^—^li) female with the postocular part of the occiput 

 y^ ^ rather inflated, and the middle frontal callus 



/ \ \ linear. Antennae all reddish. 



J ■.. '; l| The smallest British species of the 



'^^^^iC^^^mK "• •■ // g^'^^s distinguished by its grey and 



v!p\ /i blackish colour. 



~- .^■T? i •.. >j'v'ivi i • Exceedingly like the male of T. cordlger, but 



^C^^^w:^!J^'i'iiv ^^® frons Avith scarcely any trace of a brown 



-^^^'--xf Afi ji^ cross-band from eye to eye at the level of 



'" ('J: i' the antennae, and the antennae much more 



^ „.« ^ ^ ,• ■ . reddish. 



Fig. 237. — Tabanus inacvhcorms A. tt i i • j." j. j.i j.i 



X 10. Head large m proportion to the thorax ; 



face and side-cheeks grej'^er and less silvery 

 than in T. cordiger ; side-cheeks wdth blackish hairs on nearly the upper 

 half extending to the base of the antenute, and the other pubescence 

 of the face and side-cheeks more greyish white ; the long ciliation behind the 

 upper part of the eyes all pale greyish yellow or at any rate with very few (four 

 to five) black hairs intermixed ; frons dull black on the ground colour but 

 obscured on the lower half by abundant greyish or greyish yellow dust and 

 Avith the upper jwint slightly covered with light grey dust, so that the dark 

 line dividing the facets of the eyes seems to go right across the frons ; ocellar 

 tubercle very much sunk in the angle between the eyes. Palpi longer, thinner, 

 and more yellow ; end-joint elongate ovate, more than twice as long as broad, 

 and bearing long whitish pubescence with about twenty black bristly hairs on 

 the a^iical half, and the tip ending in a slightly down-turne*d short point ; 

 basal joint much shorter than the end-joint. Eyes bare, in life brownish 

 green with one conspicuous inirplish band along the top of the small facets, 

 and this band is broadest in front and has its top margin level with the top of 

 the dark space on the frontal triangle but its lower margin below the lowest 

 level of that, and gradually narrowing until close to the hindmargin where it 

 curves upwards into the zone of small facets and is less distinctly continued up 

 to the vertex. Facets almost identical in size Avith those of T. cordiger, but 

 with the distinction in size much more contrasted, more continued to the 

 front, and lower down the eye than in T. bromius. Antennae much more 

 reddish, even on the basal joints, or sometimes even reddish orange, and with 

 the hairs beneath the basal joint pale ; in shape very much as in T. cordiger, 

 but with the three subquadrate basal segments of the style-like portion more 

 distinct. 



Thorax slaty black, with five indistinct dull grey stripes ; pra^alar calli 

 dark. Pubescence moderately long and fine, mainly yellowish grey but black 

 across the disc from the suture almost to the hindmargin, and by contrast 

 more pale on the scutellum ; pubescence doAvn the disc api)earing to be 

 more etiual in length both on the front part and on the middle ; pleura3 with 

 pale greyish pubescence, which is sometimes slightly tinged Avith yelloAv on 



