572 MAJOR E. E. AUSTEN ON TUE 



spotted as in P. batesi Austen, that is to say, with a pair of small, 

 blackish-brown, adniedian spots on the transverse suture, a large 

 seal-brown blotch in front of the scutellum, and the postalar 

 calli similarly marked ; the humeral cnlli are pale drab-grey 

 poUinose above. The dorsum of the main portion of the thorax 

 being dark brown, with a thin, smoke-grey, faintly silvery, 

 polliuose covering, clothed with fine, cinnamon-buff' or drab- 

 coloured hair, the general appearance of this part of the body 

 resembles that of moleskin. The dorsum of Uie abdomen, which 

 is miicolorous and, when viewed at an angle from behind, appears 

 dull Mars-bi'own, has a bright silvery sheen when regarded from 

 other directions. 



Pantojihthahnus argyropastus is one of the smaller representa- 

 tives of its genus, the type, Avhich is from Panama, measuring 

 only 24'5 mm. in length. 



Pantophthalmus versicolor, sp. n. (Text-fig. 4.) 



6 . — Length (three specimens) 27 to 30 mm. ; width of head 

 7*75 to just over 8 mm.; greatest width of abdomen (across third 

 tergite, exclusive of fringe of hair) 12*2 to 14"25 mm. ; length of 

 wing 22-25 to 24-6 mm. 



Medium-sized species, ivith smallish head, which is distinctly 

 fiattened antero-posteriorly, striped thorax, and {at any rate in J ) 

 vivid ferruginous or orange-ricfous, sharp-edged abdomen ; facial 

 tubercle or " beak " in <S either indistinguishable, its position 

 marked by a pit, or minute and vestigial; abdominal tergites luithout 

 lateral spots, though basal angles of first tergite extensively, and 

 those of second tergite narroivly, muonmy-broivn ; iving-markings 

 in <S resembling those in same sex of P. tabaninus Thunb. ; hind 

 femora of uniform thickness, ivithout a spine on under surface, and 

 ivith terminal spine represented only by a blunt projection. 



Jlead : face and jowls m\immy-browu, a transverse, horizontal, 

 smoke-grey, polliuose streak on front mai-gin of jowls connecting 

 each eye with buccal cavity ; occiput greyish-olive, posterior 

 orbits silvery-white pollinose; jowls clothed with mummy-brown 

 hair, which is shining ferruginous at base ; first and second 

 segments of palpi clove-brown, clothed, like the terminal seg- 

 ment except distal extremity of latter, with brownish-ferruginous 

 hair, terminal segment russet (brownish at base), cylindrical, 

 straight, bluntly pointed at distal extremity ; antennce in c? 

 lighter or darker cinnamon-brown (terminal style ochraceous- 

 tavvny), third (compound) segment viewed from side bluntly 

 lanceolate in outline, second segment midway between base and 

 distal extremity bearing a circlet of short, sparse, cinnamon- 

 brown or ochraceous-tawny hairs. Thorax : ground-colour of 

 dorsum of scutum mummy-brown or olive-brown ; dorsum smoke- 

 grey or pale smoke-grey pollinose in front, on humeral calli, 

 lateral margins, lateral expansions of transverse suture, and on 

 postalar calli ; central region of dorsum beaiing three conspicuous, 

 dark, converging, longitudinal stripes (approximately equal in 



