Longicornia Malayana. 293 



resemblance inter se, different from its European and American 

 exponents. I have sought in vain, however, for any character to 

 distinguish them. They appear to vary greatly within the narrow 

 limits of their characters, and it is very difficult to say how far 

 some of these may be permanent. As it is I have here and there 

 ''lumped'' several individuals under one species that appear to 

 have a primd facie specific position. They may be divided into 

 sections according to the character of the apices of their elytra ; 

 there seems reason, however, to believe that even here there are 

 certain modifications in the same species, so that this character can 

 only be relied on approximatively. 



§ Apices of the elytra nearly entire. 

 Monochamus fistidator. 

 Lamia fislulalor , Germar, Ins. Spec. Nov. p. 478. 

 M. piceus, omnino griseo-pubescens ; scapo apicem versus 

 incrassato ; prothorace punctis minutis perpaucis notato, 

 disco regulari ; elytris pube sequali tectis, apicibus sub- 

 truncatis. 

 Hab. — Java, Timor, Malacca, Borneo, Bouru, Makian (and 



India, Ceylon, Queensland). 

 Pitchy, everywhere covered with an uniform greyish, or yel- 

 lowish-grey pubescence, the scutellum generally paler ; face with 

 a few large scattered punctures, none on the vertex or cheeks ; 

 prothorax with a very few minute punctures on each side near the 

 base, the disk nearly equal ; scutellum nearly as long as broad, 

 rounded posteriorly, the pubescence coarser ; elytra covered with 

 numerous small punctures, apices obliquely sub-truncate, or very 

 nearly rounded in some individuals ; antennae frequently brownish- 

 testaceous, three times the length of the body in the males, the 

 scape short and very considerably thicker towards the apex ; inter- 

 mediate and posterior femora scarcely thickened in the middle. 

 Length 10—12 lines. 



Monochamus defector. 

 M. rufo-piceus, omnino griseo-pubescens; scapo sub-cylindrico ; 



elytris pube sequali tectis, apicibus rotundatis. 

 Sah. — Singapore. 



Closely resembling M. fslulator, but the scape is more slender 

 and cylindrical and very slightly thicker towards the apex, all the 

 femora are considerably shorter, and the intermediate and poste- 

 rior are as much incrassated as the anterior. 

 Length 8 lines. 



