( 254) 



LVII. PLATYSPHINX .trnn. nov.— Tyims : comtriqilis 



Amhuly.r Wnlkor (,(0«i(i, 18;'.C), Pro,: Xal. Hist. Soc. Glasgon- i. p. 328 (1809). 

 flfls/oHfl, Maliillo («";< Walker, 18r.G), /)»^/. 5oo. Zoo/. F/a»^f ii. p. 491 (1878). 

 Brachi/glo.''s,i V, id., Am,. S,.,-. K„l. l\;i„r, p. iO:^ (1879). 



(??. Tonpn(> rntlipv stonl, Imt short. Paljins stuallor in ? tlinn in 6, joint 

 not quite open. A tuft of long hair-sralcs beliiml tlio eye, lianging over the lower 

 part of same. Antenna of ? thin, cylindrical, not grooved, .'seriated ciiiae very 

 sliglitly prolonged ; of c? strongly compressed, deei)ly grooved ; end-segment, short. 

 Abdominnl tergites spinose all over, the spination more tawny, stronger, and denser 

 at the apical margins. Tibiae sp/iiosc: foretibia nearly as long as tarsus; spurs 

 short, o?7r \mr to hindtibia ; i>ulvillns and paronyehinm present. Distal margin 

 of wings entire ; apex of forewing little produced, acute, hinder angle very obtuse 

 in ?, less so in <S : D- of hindwing oblique, about twice as long as D^, lower angle 

 of cell more or less acute. Clasjier and eightli tergite without friction-scales. 



Early stages not known : tlie larva most probal)ly spiny. 



IJ<(k West and East Africa, not yet known from German and Britisli East 

 Africa. 



A derivation from a form similar to Psrudoclanis postica, differing in the 

 shorter tongue, the longer tibiae, the absence of the pro.\imal pair of hindtibial 

 spurs, the not-prolonged seriated ciiiae of the ? -antenna, etc. 



The four species resemlile one another rather closely in colour ; their dis- 

 crimination requires some care. 



Key to the species : 



(I. Hindwing below shaded with conspicuons 



white scaling on disc .... 18;"). P. coKStriijili^. 



Hindwing below without white scaling on disc . b. 



(•. Forewing practically without speckles . . 188. P. piabili.t. 



Forewing with numerous speckles . . . r. 

 r. Forewing below with large red patches or a 



red band behind cell .... 186. P. stiqmatica. 

 Forewing lielow without either large red 



patches or a red hnnd behind cell . 187. /'. /ihtilUn. 



l>i">. Platysphinx constrigilis. 



Aihbidyr coiiftiigilii Walker, Pnii\ Xal. Hif:l. Sor. Glaf^fimi- i. p. 328. n. J (1869) (Congo) ; 



Kirby, Cat. Lep. Het. i. p. 676. n. 29 (1892). 

 Amhutyx? coMtrigilis, Butler, Traiif:. Zool. Sec. LotiJ. ix p ;J82. n. 12 (1897). 



c? ? . This is the most generalised of the species of this genus. 



Wings : upperside, speckles small, those of forewing minute. Forewing : 



a straight, narrow, oblique line 2 or 3 mm. proximally of JP, continuous from costal 

 Iz iiiucr margin, another line across apex of cell appearing as a direct prolongation 

 of a line along R", an isolated iuniform line between M and (SM') proximally of 

 base cf M' ; three discal lines, the inner two geminate, botli obsolete between 

 R- and IP, reappearing between M' ami M- as two halfmoons, of which the 

 proximal one is very faint ; the third line consisting of arches, produced distad 

 upon the Ytnus, arch R" — M' mucli more proximal than the others ; a short brown 



