566 MAJOR B, E. AUSTEN ON THE 



Pantophthalmiis batesi, sp. n. (Text-fig. 2.) 



(S . — Leugtli (one specimen) 24 mm. ; width of liead 6'4 mm. ; 

 greatest width of abdomen (across hind border of second tergite) 

 8 mm, ; length of wing 18'5 mm. 



Itelatively small and {in S sex at least) somewhat narrow-bodied 

 species, loith, in S ? « small but conspicuous, sharp-pointed facial 

 " beak," unstrij)ed thorax, and ochraceons-orange abdomen, which 

 along each lateral margin bears a series of sooty-blach s^jots or 

 elongate blotches, and dorsal stir face of luhich, except anterior 

 borders of second to fifth seginents inclusive, has from certain angles 

 the appearance of burnished silver; luing-mar kings presenting a 

 general resemblance to those of P. tabaninus Thtmb., but ivith 

 conspicuous differences, notably a curved pale mark connecting fork 

 of third longitudinal vein with costa ; posterior fem.ora icithout, 

 or loith 'merest vestige of, a spine on under sutface. 



Head in (^ sex mere flattened in an antero-posterior direction 

 than that of P. iahaninus Thunb., and consequently less hemi- 

 spherical in outline when viewed from above; face, except beak, 

 dusky drab ; jowls and basi-occipital region clove-brown, clothed 

 with similaily coloured hair; occiput olive-bufi"; facial beak 

 blackish brown at base, distal attenuate portion chestnut-brown ; 

 palpi light .sepia-coloured, darker towards distal extremities ; 

 second segment * clothed beneath, towards distal extremity, with 

 blackish- brown hair, terminal segment curved, .slender, tapering 

 to the tip ; first and second segments of antennce luisset-coloured, 

 first segment thinly clothed Avith brownish hair, second segment 

 Avith some glistening orange-buff hair on distal margin (third 

 segment missing in case of type). Thorax : ground-colour of 

 dorsum cinnamon-drab, thinly suflTused above with smoke-grey 

 pollen, while lateral borders of dorsum are olive-bufl* pollinose ; 

 main portion of dorsum (.scutum) marked Avith five dull-black 

 spots, of which two, smaller than remainder and nearly circular, 

 are situated on line of transver.se suture, one on each side of 

 middle line ; remaining spots transversely elongate and situated 

 on hind border, one in middle line, the other two occupying the 

 postalar calli, except inner extremities of latter; scutellum dull- 

 black or blackish-brown, anterior angles and lateral borders 

 smoke-grey pollinose ; pleurre and pectus black ish-broAvn and 



* Noto on tho number of segments in the maxillary palpus in Piiiitophtlinlniidiu. — 

 Fiebvijj (Zi)itHclir. f. wiss. Insoktciibiol., Ijd. ii. p. 310, ]0O0), in (loscribiiisir tlie 

 species nanieil by liim Acanthomera teretruncnm {=l\intophtJialmus jiictns 

 {Acanthomera picta) Wicd.), spoaks of "tbe vebitively long, tlivoe-jointcd palpi." 

 Williston (Noitb American Diptera, 3vd Ed., p. 173, 1908), in ii >.bort genevnl 

 account of the " Family Aeanthoincrid*," states that tlio palpi are "two-jointed." 

 IiMstly Endi'vleiu (Zool. Anz., Hd. xli. p. 09, 1912) says that in Pantopbtiialmidie, 

 owing to tlie irregnlar transvei'se wrinkling of the paljjus basad of the terminal 

 segment, it is im))ossil)le to determine whether this portion is further segmented or 

 not. 'I'lierc can ho no doubt, however, that tho maxillary palpus in tiiis family 

 consists of three segments, in which, while tlio second is often marked by con- 

 spicuous annul! or transverse wrinkles, tbe first owing to its shortness may easily 

 be overlooked, although in many si)ecies distinguishable by darker coloration and a 

 different arrangement of the hair. 



