MARITIME COLEOPTERA. 503 
appeared and disappeared with rapidity in the gravel, but also 
darted about like flashes of light in the sunshine on the rocks close 
above it. When hard pressed in the chase, they made for joints in 
the slate in a way which convinced me they were quite familiar 
with the shelter to be obtained between the layers ; and it was not 
always easy to dislodge them without injury when once they had 
reached their goal. It was not convenient for me to visit this 
locality again until August, 1916, when a most careful and prolonged 
search for some hour and a half failed to reveal a single specimen ; 
but, by opening up the lamelle of the slate rock below high-tide 
mark, I secured some half-dozen mature examples. There is little 
doubt that these specimens had bred there. 
Ab. pieunotatus Heer. Slapton, Wollaston ; Torcross ; Downderry. 
Ab. UNICOLOR Schill. Torcross. 
*MICROLESTES (BLECHRUS) MAURUS Sturm. Bovisand; Wembury ; 
Whitsands. 
*DROMIUS NIGRIVENTRIS Thoms. Dawlish, May, 1906, one only. 
*D. VECTENSIS Rye. On the shore between Torcross and Beesands, 
one only, May, 1901; at roots same locality, G. C. Champion and 
myself, about a dozen examples, August, 1907. Seaton, Power. 
HYDRADEPHAGA. 
*C@LAMBUS INZQUALIS F. Common. Lipson Marsh ; Chelson Meadows ; 
Downderry ; Slapton Ley. 
*BIDESSUS MINUTISSIMUS Germ. Slapton Ley, in quantity at times. 
First recorded by Wollaston. 
*HyDROPORUS (DERONECTES) ASSIMILIS Payk. Slapton Ley, de la Garde 
one only, October, 1907. 
*H. LINEATUS F. Exmuinster, de la Garde. 
*AGABUS CONSPERSUS Marsh. Plentiful in a pool by the mouth of the 
R. Seaton, near Downderry. 
*GYRINUS ELONGATUS Aube. Slapton Ley. 
*G. MARINUS Gyll. Powderham, Parfitt. 
PALPICORNIA. 
{HELOPHORUS MULSANTI Rye. In numbers by the R. Teign, near Teign- 
mouth, June, 1909, de la Garde and myself. 
