130 [April, 



colour of the elytral spots, which are testaceous, not white, and by the 

 absence of hairs on the genae. These last may have been rubbed off, 

 but I am unable to detect any in the numerous specimens before me. 

 It also appears to be closely related to C. didyma Dej., from Java, but 

 differs from it in several points of structure. 



Described from a series of twenty-six specimens collected between 

 October 27th and November 5th, 1914, in small side streams off the 

 Baram River, at Lio Matu, Sarawak, Borneo. Altitude approximately 

 700 ft. above sea level ; distance by Eiver from sea to Lio Matu 

 approximately 220 miles. 



Although the great Baram river is little more than a mountain 

 stream at Lio Matu, where one can wade it waist-high, no Cirindela 

 beryUae were found on the main stream ; they appeared to be entirely 

 confined to one or two smaller streams which flow into the Baram 

 River at Lio Matu ; some were taken quite close to the juncture of 

 these small streams and tlie main river, but none actually on the main 

 river. C. anrulenta, on the other hand, was common on the main 

 river, but only once taken in a small side-stream. This latter species 

 is about the commonest beetle in Sarawak, from coast to interior, 

 lowlands to moimtains ; it ranges from Ceylon, all over India, Burma, 

 South China to Formosa, and south to the Greater Sunda Isles. 



I refrain from making any one specimen the tyi^e of this si^ecies ; 

 but out of the 26 specimens before me I distribute " co-types " as 

 follows : a pair each to the British Museum, the Oxford Museum, the 

 Raffles Museum, Singapore, and the Sarawak Museum. 



Sarawak Museum : 



January 26th, 1915. 



STUDIES IN HELOPHORINI. 



BY D. SHARP, M.A., F.R.S. 



4.— THE EMPLEUBI. 



Before considering the species of Helophorini, I must give some 

 explanation of the material on which my conclusions are chiefly based. 

 Many years ago, I formed a considerable collection of Hydropliilidae 

 of the world, and in the course of doing so the collection of Castelnau 

 came into my possession, as well as the European collection of 

 M. Laferte, this latter containing a series of specimens named by 

 Mulsant. Some ten years ago this collection became the property of 



