164 Longicornia Malay ana. 



So far as my materials have allowed, I have had little doubt as 

 to the distinctness of most of the species here described ; the 

 technical characters are, however, so slight in themselves as to 

 make very decided diagnoses impossible. The colours of the 

 derm are brown of various shades, with a pubescence of grey of 

 various shades, modifying each other according to the density of 

 the latter, with spots or patches or lines, more or less distinct, or 

 mere shades of more or less intensity. Some individuals are 

 darker than others, or their markings may be nearly obliterated, 

 so that it is very diBicult to say what characters are to be relied 

 on ; or, if a larger series of specimens were available, it might be 

 that many forms here described would be found to belong to one 

 variable species. 



On those species with crested elytra Mr. Newman has formed 

 his genus Plerulop/iia * (and Notolophia), but in some the crests 

 are so slight that it is hard to say if they really exist ; the passage 

 is almost insensible. -j" 



Respecting the habits of these insects, Mr. Wallace says that 

 they are found in large numbers on the tops of bamboo pali- 

 sades, used in fencing, whenever there is any moisture oozing 

 from them. 



§ 1. Elytra scarcely, or not at all, crested, the apex rounded. 



Praonetha albo-signata. 

 Prioneta albo-signata, Blan. Voy. Pole Sud, iv. 292, pi. xvii. fig. 11. 



P. fusca ; prolhorace subtransvcrso, sat confertim impresso- 

 punctato, lateribus recto, postice angustiori ; elytris lineis 

 transversis flexuosis griseis. 



Hab. — Amboyna. 



Dark brown ; head covered with coarse greyish hairs ; pro- 

 thorax subtransverse, constricted at the apex, the sides straight, 

 although a little narrowed towards the base, rather closely punc- 

 tured, the punctures strongly impressed, so as to throw the derm 

 into short irregular folds ; scutellum semicircular; elytra subse- 

 riate-punctate, striated at the sides, covered with a coarse pale 

 grey pubescence, with the exception of two or three dark brown 

 patches at the sides, which are nearly glabrous, and are so placed 



* Entom. i. 370. The type specimens in the British Museum are labelled 

 Notolophia by Mr. Newman, which name however seems to have been 

 subsequently overlooked or dropped. 



\ For further remarks on this genus, see Journ. of Entom. i. 348. 



