ON THE GENUS HELOTA. 103 



from the Copenhagen Museum , and a male specimen from 

 North China (brought home by Père David) making part 

 of Mr. Oberthür's collection. 



Helot a Kolbei, nov. spec, c? and 9- 



This is another Chinese species of the Gemmata-grouip , 

 of which several specimens of both sexes have been brought 

 home by Père David together with Gorhami Olliff and 

 caudata Rits. As to the sculpture of the elytra it resem- 

 bles the Japanese Helota gemmata Gorh. l ) much more than 

 it does Helota Gorhami Olliff with which it is confounded 

 by Mr. Olliff. Usually, however, it is larger, considera- 

 bly narrower, and more elongate, the bronze colour of the 

 upper surface is brighter, and the colour of the abdomen 

 (in mature specimens) dark chestnut , brighter along the 

 lateral margins, whereas in gemmata the colour of the 

 abdomen is rufous. 



The cf is easily distinguished from that of all other 

 known species by the want of' the tomentose impression 

 on the last ventral segment, the apical margin of which 

 is faintly trisinuate. Its elytra are conjointly rounded at 

 the apex and do not show the slightest trace of a sutural 

 spine , whereas the small strongly compressed apical dila- 

 tation on the inner margin of the under surface of the 

 anterior tibiae , which is present in the male of gemmata, 

 is absent in Kolbei. 



In the 9 the apices of the elytra are more produced 

 than in gemmata, and, though likewise regularly narrowed 

 in a convex line , more acutely pointed ; moreover the last 

 ventral segment, which is very short in gemmata (about 

 equal in length to the 3rd segment), is considerably longer 

 (about as long as the 3rd and 4th segment taken toge- 

 ther) and of a more triangular shape in the new species. 

 Finally the apical depression which is present on the last 



1) Trans. Ent. Soc. London. 1874. p. 448. 



Notes from the Leyden Museum, Vol. XI. 



