SUMATRAN COLEOPTERA. 243 



curved transverse line at the base of the clypeus is wanting 

 in this female, whereas the transverse striae on the pro- 

 notura are more distinct and occupy nearly the whole sur- 

 face. Moreover the bare stripes on the elytra are metallic 

 green , not coppery as in the type-specimens. 



9. Pseudanhammus (n. g.) Keili, nov. spec. — A single 

 male specimen. 



It is not without some hesitation that I propose a dis- 

 tinct generic name for this , I believe undescribed species 

 of Monohammid. After a careful examination I could find 

 no better place for my insect than in the genus Anham- 

 mus or Monohammus with which it has the majority of 

 characters in common, viz. a declivous mesosternum which 

 is neither produced nor tubercled , a strongly spined thorax , 

 eyes of moderate size and not approximate in front, elon- 

 gate antennae, a scape with a cicatrix, the head subqua- 

 drate (not transverse) in front , etc. From the former genus , 

 to which it bears a strong resemblance in the habitus, it 

 differs, however, by the want of a tooth at the shoulders, 

 and by the different situation of the thoracical spines which 

 are placed about the middle of the sides. From the latter 

 genus it differs by the strongly granulate base and shoul- 

 ders of the elytra, which granules are gradually replaced 

 by deeply impressed punctures which are arranged in lon- 

 gitudinal rows and become less and less distinct towards 

 the end; moreover by the shape of the thoracical spines 

 which are slender and obliquely directed upwards. Finally 

 the new genus differs from both by the different confor- 

 mation of the prosternum between the anterior coxae , this 

 being not rounded but wedge-shaped , perpendicularly rai- 

 sed to the level of the coxae, and furrowed along the 

 middle of the whole front side which gives the top a bi- 

 partite appearance. 



The generic name of the present insect is derived from 

 its strong resemblance to a dwarf-specimen of Anhammus 

 Daleni Guér. The specific name is given in honour of its 

 captor. 



Notes from the Leyden Museum , Vol. XI. 



