Ashmolean Natural History Society of Oxfordshire. 59 
Ccelambus versicolor, Schall. In standing and running water ; Cher- 
well at Summertown, Tubney, &c., not rare. 
C, inzequalis, F. In ponds ; Tubney, occasional. ‘Taken at Oxford in 
TOLQ), (Le) WeEZe): 
C. confluens, F. In ditches, Marston (W. #.). 
C. impressopunctatus, Schall. ‘ Taken at Oxford, in 1822, by Cleeve 
of Exeter, on the Botley road” (7. W.H.) Not yet met with by me. 
Deronectes depressus, F. ‘‘ Taken in brooks in Oxfordshire” 
(fF. W. #.). 
D. 12-pustulatus, F. ‘‘ Capt. Oxon, 1819” (-% W. Z.). 
Hydroporus pictus, F. In stagnant water; Islip, Marston; not rare. 
*¢Taken at Oxford in 1819” (7. W. #.). 
. granularis, L. In stagnant water in spring ; Yarnton, common. 
. lepidus, Ol. In ponds, &c.; Boar’s Hill; Bagley Wood, common 
W. #.). 
. soaks F. In stagnant water; Yarnton; Marston (17%. #.); oc- 
casional. 
lineatus, F. In standing water; generally common. 
palustris, L. In standing and running water; generally abundant. 
erythrocephalus, L. With the preceding ; fairly common. 
memnonius, Nic. Occasionally taken by sweeping in damp places ; 
Bagley Wood. 
obscurus, Sturm. In ponds at Tubney (/V/. #.). 
pubescens, Gyll. In standing water; generally distributed. 
planus, F. In standing water; not rare and widely distributed. 
lituratus, F. With the preceding; Bagley Wood and near Wood 
Eaton (W. £.). 
gabus paludosus, F. ‘‘ Takenat Oxford in 1820, in ditches” (7. ZW. H.). 
didymus, Ol. In running water, scarce ; Shotover, Yarnton ; Binsey, 
Tubney (W. #.). 
nebulosus, Forst. In ponds, not rare ; Shotover, Tubney, Yarnton. 
. femoralis, Payk. In ditches near Marston (W. #.). 
. sturmi, Gyll. In ponds at Tubney ; not rare. 
chalconotus, Panz. With the preceding ; not rare. 
. bipustulatus, L. In ponds and ditches ; generally common. 
latambus maculatus, L. Chiefly in running water; Cherwell near 
Marston; near Islip, and Bagley Wood (JY. #.). ‘‘ Taken in the 
river Cherwell at Oxford very commonly in 1819” (7. W. 4.) 
Ilybius fuliginosus, F. In standing water; Marston; Cowley (W. #.), 
not rare. 
*I, fenestratus, F. In standing water at Tubney, and flying at Marston; 
‘Taken at Oxford in 1819” (-. W. 77.). 
I. ater, De G. In standing water, not rare ; Marston, Tubney, &c. 
I. obscurus, Marsh. With the preceding, occasional ; Marston, Yarnton. 
Copelatus agilis, F. In standing water, not rare ; Yarnton ; Wytham 
(SEDaY: 
Rhantus exoletus, Forst. Instanding water ; Marston ; Tubney (/V. #.). 
R. pulverosus, Steph. In ponds at lubney (//. /.). 
Colymbetes fuscus, L. In standing water ; common. 
Dytiscus punctulatus, F. In ditches; Marston, and near Wytham 
(Ww. #.). I have picked up this species in Oxford on the Banbury 
Road. 
D. marginalis, L. In ponds and ditches ; generally common. 
Acilius sulcatus, L. With the preceding, not rare. 
* 
mime Seite bts 
UP >>>> p> 
