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X. PSILOGEAMMA gen. dov.— Typus : menephron. 



Sphinx, Cramer {mm Linn^, ]75«). Pap. Exot. iii. p. 1G4 (1780) ; Boisd., Spi-e. Gin. Lep. Hit. i. 



p. 87 (1875). 

 Ilijloi.-us Hiibner, Verz. hrh. SfliuK p. 139 (1822) (partim). 

 Macrnsili, 'Walker, Lhl Lep. Ins. B. M. viii. p. 208 (1850) (partim). 

 Ancnyx id.. I.e. p. 225 (1858) (partim) ; id.. If. xxxi. p. 3G (1804). 

 Meganolnn Boisduval, I.e. p. 58 (1875) (p.artim). 



Dihulin, Butler {n.,n Grote & Rob., 1865), Pr,„: Zool. Sue. Loml. p. 13 (1875). 

 Pmidoaphinx, Hampson (/ro« Burmeister, 1856), in Blanf., Fauna Brit. Ind., Moths i. p. 169 (1892). 



S ? . Antenna shorter than in Meganoton, liook shorter, pennltimate segment 

 abont as long as high, the preceding ones shorter than high. Palpns differing from 

 that oi all the other species of the present subfamily in the second segment having 

 a nnlieil stripe over the inner surface (as prolongation of the nalted stripe of the 

 first segment). Labrum very little raised in middle. First segment of foretarsns 

 somewhat longer than segments 2 to 4 together ; comb of midtarsus well developed, 

 that of hindtarsus as in Meganoton \ long spur of midtibia about h, the long apical 

 one of liiiidtarsus nearly f , the length 'of the respective first tarsal segment. 

 Pulvillns and paronycliinm present, the latter with one lobe on each side. 



S. Clasper with patch of modified scales, the scales large, rounded, entire, 

 mnltistriate ; harps vestigial (PI. XXXV. f. 20), represented merely by a thickly 

 scaled slight incrassation of the ventral margin of the clasper ; process of penis- 

 sheath short, forked. No frictidn-scales on the inner surftice of eighth tergite. 



?. Antenna subcylindrical, ciliae not prolonged. 



Larva : thoracical tergites with small conical tubercles, arranged in transverse 

 rows ; head minutely grannlose all over, somewhat narrowing above ; horn and 

 anal segment very rough with conical tubercles, horn curving upwards, --shaped ; 

 dichromatic, one form green with white obliqne stri]ies, the other with a broad 

 brown dorsal band, constricted on each segment, beginning on the third thoracical 

 segment, large lateral and ventral patches also brown. 



Chrysalis with a long free tongue-case which is not recurved. 



Ilab. Oriental Region. — Only one species. 



The genus is a development of Meganoton, being more specialised in the palpi 

 and paronychium. 



As will be seen from the above synonymy, the species has been treated under 

 seven generic names. The reference to Pseudosphinx — proposed by Burmeister 

 for a Sphingid belonging to another subfamily — is wild, to say the least. 



21. Psilogramma menephron. 



Sphinx menephron Cramer, Pap. E.c, iii. p. 164. t. 285. f . A ( J ) (1780) (Amboina). 



Hi/loirus menephron, Hiibner, Ver-. helc. Sehm. p. 139. n. 14H,'j (1822). 



*Mocrnsila discislriga Walker, Lixt Lep. Ini. B. M. viii. p. 209. n. 17 (1856 ;— Brit. Mus.). 



Anceryx pinastri var., id,, I.e. viii. p. 225. sub. n. 1 (1856). 



Meganoton di.HeiKtriga, Boisduval, Sjfee. iiin. Lep. Jiet. i. p. 59. n. 2. (1875). 



*Sphinx abietina id., I.e. p. 108. n. 47 (1875 ;— coll. Charles Oberthiir). 



*Dilii(lui vatex Butler, Prue. Zool. Soe. Lnnd. p. 13. (1875) (Ceylon ; Madras ;— Mus. Brit.). 



Psnuliixphin.r diselstriga, Hampson, in Blanf., Fauna Brit. India, Mnths i. p. 105. n. 109 (1892) 



(pjirtim). 

 Meganotmi (?) menephron, Kirby, Cat. Lep. Hct. i. p. 683. n. 13 (1892). 



i ? . Variable in colour and size geograjihically and individually ; in most 

 localities there is a dark and a ])ale form. The various subsi)ecies are not well- 



