382 Mr. H. W. Bates on the Longicorn Coleoptera 



naceae — two orders of which the British members are also desti- 

 tute, or nearly so, of raphides. 



Here, then, as far as regards the British Flora, are three 

 orders differing, in the possession of this character of raphis- 

 bearing, from their neighbouring orders ; while, on the other 

 hand, as we have already shown ('Annals/ March 1864, p. 214, 

 and 'Quart. Journ. Micros. Science/ Jan. 1864), the order 

 Hydrocharidaceae differs, in the regular want of this character, 

 from its neighbours Trilliaceae, Dioscoreaceae, and Orchidaceae, 

 three orders in which raphis-bearing is a constant and intrinsic, 

 plain and certain function of the cell-life, if not of every species, 

 certainly of all that I have examined. 



Potamogetonacece to Characece. — We have already seen how 

 abundant raphides are in many Endogens ; but, although it is 

 stated in some of our best and latest books of phytotomy that 

 raphides abound in Monocotyledones generally, it is remarkable 

 that I have never yet found true raphides in any native plant of the 

 orders from Potamogetonaceae to Characese, both inclusive, and 

 which occupy a fifth part of the text in the * Manual of British 

 Botany. ' Thus true raphides, after either an absence from or pre- 

 sence in several different preceding orders of Monocotyledones, 

 are next so abundant in Typhaceae, Aracese, and Lemnaceae, and 

 at last suddenly cease to characterize any of the following 

 orders, from Potamogetonaceae, through the rest of the class, 

 down to and inclusive of the Cryptogameae Ductulosae. 

 Edenbridge, April 3, 1865. 



[To be continued.] 



XXXIX. — Contributions to an Insect Fauna of the Amazons Val- 

 ley. Coleoptera: Longicornes. By H. W. Bates, Esq. 



[Continued from p. 225.] 



b. Thorax widest at the basal angles, gradually narrowed thence to 

 the apex. 



1 1 . Colobothea pimplaa, n. sp. 



C. minus elongata et attenuata, cinereo- vel griseo-fulva ; capite 

 fusco, vertice lineis duabus divergentibus cinereo-fulvis ; thorace 

 vittis septem fuscis, quarum una mediana latiore ; elytris griseis, 

 fusco irroratis, cinereo-fulvo maculatis, fasciis tribus (apud suturam 

 interruptis) fuscis, apice sinuato-truncatis, angulis interioribus 

 prominulis, exterioribus spiniformibus. Long. 4^-5 lin. c? $. 



Head dingy brown, forehead streaked with tawny, vertex with 

 two fine tawny lines diverging on the occiput. Antennae black 

 or reddish, fourth, sixth, eighth, and tenth joints with a whitish 



