( 2H8 ) 



Ainhiihij- :; liriHiIni,, liutlcr, Ti;i,is. Z.,„l. S.,r. /.„»,/. ix. p. UH-l. n. '_>;! (1877) (liali. '.)■ 

 I.iiirojilililw, /■ liiiiiilnii, Kiiby, Cul. Lrp. Il,t. i. p. 70-1. n, 7 (IS'.W) (Abyssinia). 



cJ. There is only oue-tliird of an antenna left lietween the two sj)ecimen,s known 

 of this species ; it is 7iot jtect'nmted, but simply grooved as in ordinary c? -antennae, 

 and the compressed ventral parts are not narrowed to separate lobes. Foretibia 

 longer than in the preceding ; no mid- and hindlegs preserved. Forewing more 

 elongate-triangular ; D- of hindwing somewhat longer than IP, this not twice the 

 length of D', lower angle of cell more acute than in mira. Tentli tergite more 

 rounded dilated, ape.x pointed. ( 'lasj)er sole-shaped, narrowed to apex ; harjie with 

 a single s))atnlate j)rocess wliich bears Ijefore the end a short and rather high carina. 

 Penis-sheath without iirmature. 



? . Not known. 



llah. Abyssinia (lleuglinj. 



Two $ S e.K coll. Felder ui the Tring Museum, one of them the type. 



LXVIIT. A(!ANTHOSPHINX.— Typus: (jusi^feUHi. 



Ambiilip; Dewitz (jkjh Walker, 1856), M/lth. Miinch. Eid. Vet: iii. p. 27 (1879). 

 Acanthiixphiiix Aurivillius, Ent. Tklskr. xii. p. 228 (1891) (type : giissfMO). 



S ? . Head large, not much narrower than the mesothorax ; tongue short. 

 Antenna very stout in c?, ventral outline of segments straight (side-view), penulti- 

 mate segment much higher than long ; snb-andromorpbic in ?. Palpus with open 

 joint, smoothly scaled. Thorax and abdomen woolly ; the tergites of abdomen 

 without broad multidentate scales, underscales mostly spiniform, apical sjiines 

 weak. Fore- and midtibia spinose, hindtibia without spines ; mid- and hindtibia 

 shorter than the respective first tarsal segments, these much longer than the 

 other four segments together ; spurs ve/y long, not spinose, not very unequal, 

 longer terminal one of liindtibia as long as the first tarsal segment ; two pairs 

 to hindtibia ; pnlvillus and paronychium present. Distal margin of wings entire : 

 U- of hindwing very oblique, three times as long as D', lower angle of cell acute. 

 Clasper and eighth tergite with organ of friction (PI. LIX. f. 1). 



Early stages not known. 



Had. West Africa : Sierra Leone to the Congo basin. 



One species. 



Differs from Polyptijchus especially in the broader head, non-spinose hindtibia 

 and the very long spurs. 



~4.j. Acanthosphinx giissfeldti. 



*Amlmli/.i- giitsfihlti Dewitz,/..-. iii. p. 27. t. 2. f. 1. la (f^) (1879) (Chinclioxo ;— Mus. Berlin); 



Kirby, C»/. Lep. Het. i. p. 67(5. n. 27 (1H',»2). 

 Acaitthnxphiiu; giissfeldti var. ghjus Aurivillius, I.e. xii. p. 22H. t. 1. f. 1 ( ? ) (1891) : id., I.e. xiii. 



p. 182. n. 229 (1892) (Cameroons, ^ ? ; spec. dist. ?). 



S ? . Tlie sjjecies varies a good deal in size. 



S. Tenth tergite broad (PI. XXIV. f. 24), sinuate at the end, concave 

 beneatli, curved veutrad at end ; sternite narrowed to a strongly chitinised hook 

 (PI. XXllI. f. 16. 17). Clfisper large, with a large patch of small friction-scales 

 which occupy the greater part of the surface ; dorsal and apical edges of clasper 

 without fringe of long scales (compare Polyptijchi^ trisecta, orthographus, etc.), the 



