RHOPALOCERA MALAY AN A. 177 



with reddish, the black fascia; above, pale brownish beneath. ]3ody and legs more or less concolorous 

 with wings. 



Exp. wings, c? and $ , 54 to 60 millim. 



Hab. — Continental India ; Dacca (Slater — Horsf. & Moore) ; Ncpaul (Brit. Mus.) — Burma; Moulmeiu 

 (Brit. Mus.) — Upper Tenasserim (Moore). — Malay Peninsula; Penang ; Province Wellesloy (coil. Dist.); 

 Malacca (Piuwill — Brit. Mus.) — Banca.* — Java; Batavia (Snellen) ; Bantam (coll. Dist.) — Borneo (coll. 

 Godm. & Salv.) — Siam ; Chentaboon (Druce). — Formosa (Hobson — Brit. Mus.) — China (Brit. Mus.). 



Of the habits of this abuudaut and widely sjn-ead species we kuow httle. Capt. Slater 

 remarks " tolerably pleutiful at Dacca, 1844. Flies quietly, and is easily captured. I used to 

 tind one or two almost invariably near a deep pool of stagnant water overhung with bamboo, 

 jungle, &c."f 



A variety I of this species is found in the Nicobar and Andaman Islands, and another 

 closely allied but darker form is found in Ceylon. § 



Genus CIRIIOCHROA. 



Cirruchroa, Doubleday, Gen. Diurn. Lep. p. 157 (1848) ; Moore, Lep. Ceyl. i. p. 02 (1881). 



Anterior wings subtriangular, either somewhat short and ample or apically prolonged ; costal margin 

 arched and convex, the apex rounded and in some species falcate, the outer margin more or less concave 

 and waved, the inner margin moderately concavely sinuate. Costal nervure extending to about half the 

 length of the costal margin ; first subcostal nervule emitted at some little distance before the end of 

 the cell, second at almost extremity of cell, third at a short distance before the bifurcation of the fourth 

 and tifth, the fourth i)rominently bent and angulated. Disco-cellular nervules obliquely bent inwardly, the 

 middle concave and about half the length of the lower ; first and second median nervules with an 

 apparently common origin a little beyond the base of the lower disco-cellular. Posterior wings ovate and 

 elongate ; costal margin moderately convex, the outer margin strongly waved ; abdominal margin straight 

 to ajjex of internal nervure and then concavely excavated to anal angle. Costal nervure reaching apex of 

 wing ; first subcostal nervule emitted opposite the base of third median nervule ; lower disco-cellular 

 nervule obsolete, leaving the cell entirely open ; internal nervure strongly curved at base and slightly 

 at apex. Body somewhat slender ; palpi reaching the upper margin of the head, finely pilose, the a2)ex 

 slender and obtusely pointed ; antenna; with a slender, long and gradually formed club. 



In the posterior wings of the male there is a longitudinal broad impression between the discoidal and 

 the first median nervules, somewhat concave above and convex beneath. 



In some species, as the Indian C. aoris, \\ the sexes ditfer widely in appearance, the female 

 being of a more obscure and duller colour above. This, however, is not the rule with the 

 majority of the species of the genus. 



'■'■ Collected by M. Teysmann (Pet. Nouv. Eut. vi. p. 404 (1H74). 



+ Horsf. & Moore, Cat. Lep. Mus. E.I.C. i. p. 151. [ C. nicoharica, Feld. § C. ^ilacUla, Moore. 



II Prof. Westwood (Trans. Eut. Soo. 1880, p. 113, t. 11) has described and fijjured two Gynandromorpbous specimens 

 of C. aoris, wbicb exhibit in each specimen (either partially or completely) the colour markings of both sexes. 



As Prof. Westwood has pointed out, " The term Gynaudromorphism was first applied by M. Lacordaire to supersede 

 in Entomology that of Hermaphroditism." " In insects, gynandromorpbous specimens partaking abnormally of the characters 

 of both sexes, are generally bilateral ; the sexual distinctive characters (which are for the most part in these instances the 

 secondary ones) of one sex being exhibited on one side of the body and its organs, and the peculiarities of the opposite sex 

 being seen on the other half of the insect." This is called " complete" gynaudromorphism ; but other cases occur in which, 

 "whilst the body of the insect appears to be unisexual, the partial sexual divarication is confined entirely to the seco7ulanj 

 sexual characters" Prof. Westwood observes that "the peculiar import of this strange modification in a physiological point 

 of view is very difficult to be understood." 



December, 1883. 2 z 



