Rev. F. W. Hope on some new Insects collected in Assam. 441 



gricanti, fasciis binis ocliraceis notato, prima ante medium disci posita 

 atque ad suturam vix extensa, secundcâ intégra at latiori. Corpus infm 

 ochraceo-flavnm, piibesccntiâ snbaiiratâ obsitum. Pedes femoribus fusco- 

 flavis, tibiis tarsisque pallidionbus. 



This insect also inhabits Assam, and is in the collection of Mr. Solly. It is 

 named in honour of its discoverer Mr. Griffith, an acute and enterprising 

 l)otanist, author of a valuable memoir on the Development of the Ovulum of 

 Santalum and Loranthus, printed in the 18tli volume of the Society's Trans- 

 actions. 



The clothing of this species I can only compare to an inferior velvet or a 

 sort of plush ; when rubbed it exhibits the appearance of bronze, and in places 

 it resembles a rose-coloured copper. It is remarkable for a peculiarity of 

 colouring, which I regard as of very rare occurrence. It appears as if the 

 colouring matter of the second fascia had run, and had overwhelmed the black, 

 the yellow-ochre taking its place. 



MoNocHAMUS. 3Iegerle. 

 Monochamus Ruber. 



Tab. XXX. fig. 5. 



Long. lin. 11. Lat. lin. 4^. 



Ruber ; antennis corpore duplo longioribus, thorace elytrisque nigro-maculatis, 

 pedibus concoloribus. Caput anticè nigrum, postice rubrum. Antennce 

 longissimee, nigrse. Thorax disco rubro, spinis utrinque atris. Elytra 

 rubra, humeris, scutello, niaculisque variis nigris sparsim dispositis. 

 Corpus infra nigrum, pectore, segmentis abdominis utrinque rubro-nia- 

 culatis. Pedes atri, plantis fusco-spongiosis. 



The above species, remarkable in its colouring, is also from Assam. I know 

 of no species allied to it. The red colour, after the death of the insect, changes 

 to a pale orange. I have seen some specimens so bleached by the light that 

 casual observers would regard them as distinct species. 



3 M 2 



