POLYPTYCHIC. 169 



the ventral margin of the harpe convex close to base of lower 

 tooth, and tergite apically somewhat natter and less pointed 

 than in undatus. Unpaired fish-tail process of penis-funnel 

 Apically broader than in undatus, with the two prongs less 

 produced. 



Hob. Andaman Islands; Port Blair. 1 <$ in Mus. Tring. 

 The early stages are not known. 



38. Polyptychic dentatus (Cramer). (Fig. 33 G-I, genitalia, 

 fig. 34, imago ; PL II, figs. 7, 8, 9, larva, fig. 10, pupa : 

 PL XIII, fig. 7, larva). 



Sphinx dentatus, Cramer, 1777, p. 42, pi. cxxv, fig. G (Coromandel). 



Polyptychus dentatus, Butler, 1883, p. 154 (Belgaum ; Mhow) ; 

 Forsayeth, 1884, p. 395 (Mhow ; larva and habits) ; Swinhoe, 

 1885 B, p. 290 (Poona; Belgaum; Bombay); id., 1886, p. 435 

 (Mhow) ; id., 1888, w. 119 (Karachi) ; Hampson, 1892, p. 69 ; 

 Roths. & Jord., 1903,'p. 240 ; Jordan, 1911, p. 240 ; Seitz, 1928, 

 p. 538, t. 66 a ; Mell, 1922, p. 124, pi. iv, fig. 17-21 (larva). 



Sphinx timesius, Stoll, 1790, p. 172, pi. xi, fig. 1 (Coromandel). 



Sphinx modesta, Fabricius, 1793, p. 356 (Tranquebar). 



Smerinthus denticidatus, Hearsey, 1864, p. 100 (larva, on Cordia 

 sebistena). 



Imago. — <£$>• Whitish- cinereous. The post-discal and discal 

 lines of fore wing parallel, straight, the former not curved 



Fig. 34. — Polyptychus dentatus (Cram.), 



distad beyond R 2 . the dentate line between them distinct. 

 Expanse : £ 92-108 mm., $ 116-120 mm. 



3 . Tenth tergite (fig. 33 G) not strongly narrowed to the 

 end, apex sinuate, the angles pointed ; sternite developed to 

 a large mesial plate which is deeply sinuate, with the lobes 

 rounded at end. Clasper sole -shaped ; no organ of friction ; 

 harpe (fig. 33 H) with two processes — one submesial, short, 

 somewhat twisted, curved upwards, the widened part concave, 

 the process being more or less ladle-shaped ; the other long, 

 ventral, not quite so long as the clasper, pointed, somewhat 

 curved at end, the ventral processes of the two claspers not 



