202 LIVERPOOL BIOLOGICAL SOCIETY. 
Dytiscus punctulatus, F. A few specimens of this species 
in a pond among the sandhills beyond Wallasey village 
(J.W.E.); ponds near Liscard (R.W.). 
Acilius sulcatus, Li. Generallly distributed, but scarcely 
common. 
GYRINIDA. 
Gyrinus natator, Scop. Abundant. All the specimens 
I have seen from this neighbourhood are of the form 
known as mergus, Ahr., distinguished by the distinct but 
much finer inner strie. 
Gyrinus bicolor, Payk. Recorded by Mr. Archer from 
ditches on Altcar Rifle Ground, and by Mr. Gregson from 
between Bromborough and Raby. The Rev. W. W. Fowler 
refers to the record of this species at Liverpool as doubtful; 
I have Mr. Gregson’s specimen, and it is not the following 
species, as suggested by Fowler, but an undoubted bicolor. 
Gyrinus distinctus, Aubé. Taken by Mr. Chappell behind 
Leasowe Embankment, in April. Acting under his direc- 
tions, I have myself found it in that neighbourhood. 
Gyrinus marinus, Gyll. ‘‘In Wallasey Pool, before it 
was converted into docks’’ (C.8.G.); Altcar (F. Archer); 
Liscard (J.W.E.). 
CLAVICORNIA. 
HYDROPHILIDE. 
Hydrobius fuscipes, L. Abundant. 
The race H. picicrus, Sharp, is about as common as the 
type in this neighbourhood, and I find that this form, 
distinguished by its pitchy legs, and shorter and more 
convex shape, stands in some collections as H. oblongus. 
Einochrus bicolor, Payk. In a pit near Westminster Road 
(F.K.); River Alt, at Hightown, in 1884 (J.W.E.). 
Anacena limbata, F. Abundant. 
