118 Miscellaneous. 



segmeutis vcutralibus lateraliter |miKtati.s, medio vix punctatis ; la- 

 mina 8ubf?cnitali couspi^ua, la;vi, politissinia, coiivexa. Femoribus 

 anticis miiticis. Lanis totis aterrimis. Loug. corporis c? 37-45, 

 $43millim. ; pronoli J 10-13, $ 10:| ; pronoti lat. S l-io-l'l, 

 $ 161 ; long, tegmiiuim S 2'.»-o3, $ 2U|. 

 Unh. Numerous adult aud immature specimens of both sexes from 

 the Niiga hills {J. Butler and Goihrin-Austeii), Brahmaputra valley 

 {A. ir. Chentiell), aud Dikrang valley (Goclwin-Austcn). 



Panesthia Saussurii, n. sp. 



2 . r. mandarinea, Saussure, M»51anges Orthopt. p. 100, pi. 3. fig. 23, 

 uon p. 40, pi. 1. fig. 25. 



I have recently received from Johore in the Malay peninsula a 

 line series of specimens of P. mandarinea, none of which exhibit the 

 least approach to the remarkable structure of the abdomeu seen in 

 the insect described and figured by De Saussure as the supposed fe- 

 male of it. The larva) of P. mandarinea, moreover, are jet-black 

 throughout, while those of P. Saussurii are deep black-brown sym- 

 metrically variegated with pale testaceous on every part of the body, 

 including the legs, which are ringed, the antennfe, which are tipped, 

 and the head, which is triply banded, with the same colour. A 

 further reason for refusing to accept the insect figured by De Saus- 

 sure on pi. 3 (oj:. sui^ra cit.) as the female of the one represented on 

 pi. 1 is that the latter is itself also a female, the sides of the pro- 

 notum in the true males of which are produced into huge curved 

 horns, each separated from the broad scmioval median lobe covering 

 the head by a deep rounded emargination. 



Hab. A single specimen of the male from Sikkim (L. MandelK). 

 This insect having been captured just prior to the last moult, the 

 organs of flight are still in rudiment, and the pronotum is still non- 

 emarginate. — Journ. Asiatic Soc. Beng. vol. xlv. part 2, 1870. 



On some Facts relathig to the Nutrition of the Embryo in the 

 E(jfj of the Fowl. By M. C. Dakeste. 



My investigations in experimental teratogeny have enabled me 

 to ascertain some facts with regard to the nutrition of the embryo 

 in the egg. 



If in the fiirst days of incubation we remove the blastoderm with 

 the portion of the vitelline membrane that covers it, and the layer 

 of albumen lining this section of the vitelline membrane, and then, 

 after separating the blastoderm from the vitelline membrane, coagu- 

 late the albumen by means of alcohol or hot water, we find that the 

 albumen has completely disappeared above the embryo. There is 

 here a vacant space in the fonn of a hollow cylinder, or rather a 

 portion of a cone with a circular base. This perforation of the 

 albumen is the more considerable in proportion to the distance from 

 the commencement of incubation, and consc(]Ucntly to the space 

 occupied by the embryo in the blastoderm. 



