FAUNA SIMALURENSIS. 113 
NOTE XVI. 
FAUNA SIMALURENSIS. 
COLEOPTERA, FAM. DYTISCIDAE. 
BY 
Dr. H. J. VETH. 
1. Hydrovatus subtilis Sharp. 
1 specimen from Sibigo (Simalur), August 1913. 
2. Hyphydrus vanthomelas Rég. 
1 specimen from Sinabang (Simalur), February 1913. 
3. Copelatus tenebrosus Rég. 
11 specimens from Sinabang (Simalur), February, May 
and June 1913. 
4. Hydaticus Fabricit Mac Leay. 
5 Jd and 1 Q from Sinabang (Simalur), January, 
February, March and June 1913, and 1 Q from Labuan 
Badjau (Simalur), June 1913. 
5. Hydaticus bihamatus Aubé, var. pacificus Aubé. 
9 Ff and 19 from Sinabang (Simalur), January 1913. 
6. Hydaticus vittatus F. 
1 { and 2 QO from Sinabang (Simalur), January and 
March 1913. 
In these specimens the innermost yellow band on the 
elytra is much reduced. 
Notes from the Leyden Museum, Vol. XXXVI. 
