252 ATOSSA Dl PARTITA. 



the sides spots of a dense pale yellowish pubescence; the 

 abdomen likewise is glossy and impunctate , the 2nd , 3rd 

 and 4th segment have a small lateral spot of white hairs 

 at their base, whereas the 5th or apical segment, which 

 inter alia is nearly as long as the three preceding segments 

 taken together and shows an impressed line along the 

 middle, is rather broadly margined laterally with a dense 

 pale yellowish pubescence and fringed at the apical margin 

 with long yellowish hairs; the apical margin of the pygi- 

 dium is deeply notched in the middle. 



Hah. Borneo (Diard). — Three female specimens in the 

 Ley den Museum. 



There is moreover in the Museum collection a male 

 specimen, likewise ticketed » Diard, Borneo", which differs 

 from the above described female specimens , besides by 

 the sexual differences ') and its somewhat larger size and 

 more robust shape, in having the prothorax distinctly 

 longer, more strongly rounded at the sides, and without 

 longitudinal white lines on the disk. I dare , however , 

 not decide whether it is a variety of the male sex of my 

 new species , or the male of an allied species , the more 

 so because its elytra are somewhat rubbed. 



The genus Atossa Thoms. , which contains up to now 

 three species, viz. strenua Thoms. from Java (the type of 

 the genus), atomaria Pasc. from Penang, and hipartita 

 Rits. from Borneo, is perhaps best differentiated from the 

 allied genus Grammoeehus Thoms. , by its more approxi- 

 mate antennary tubers which are separated by a somewhat 

 deeper excavation. The differences in the mandibles, men- 

 tioned by Lacordaire (Genera des Coléoptères. IX, 2. p. 

 497), » slender" or » thick", are merely sexual. 



Leyden Museum, October 1890. 



1) Longer nntennae and forelegs, larger hook at the apex of the antennae, 

 thicker mandibles , different size and conformation of the last abdominal segment, etc. 



Notes from tlie Leyden Mluseum, "Vol. XII. 



