1908. J 103 



cent than the remainder of the dorsum, in the female it is not so. 

 The penis is the small oblong body which occupies the long axis of 

 the suboval opening enclosed by the paramera. In auriculatus the 

 apex of the a?deagus is drawn out into a beak-like point ; in luridus 

 it is rounded. 



Owing to the small number of male specimens at present availa- 

 ble, it is impossible to say whether one of these species is more 

 prevalent than the other ; luridus I have from three widely separated 

 stations in Norfolk ; auriculatus was common at Homing in May, 

 1888, and I have it also from a pond on a gravelly common in Mid- 

 Norfolk. 



I should add that I am indebted to Herr Ludwig Ganglbauer for 

 confirming my determination of this species, and for a beautiful 

 drawing of the parts in auriculatus, which enabled me to fully appre- 

 ciate the aptness and accuracy of his descriptions. 



Colesborne : April Uth, 1908. 



TWO UNRECOGNISED BRITISH SPECIES OF THE GENUS 

 NOTIOPRILUS. 



BY NORMAN U. JOT, M ECS , F.E.S. 



When corresponding with Capt. Deville lately he has very kindly 

 on several occasions communicated to me species of Coleoplera which 

 are not on our lists, but which, from their abundance in France, one 

 would expect to find here. Among these were specimens of Notiophi- 

 lus pusillus, Wat. (bigeminus, Thorns.), and N. Jiypocrita, Spaeth, and 

 a careful examination of my short series of N. aquaticus, L , and AT. 

 palustris, Duft, established the fact that both these species occur in 

 Britain. Among my eight supposed examples of A", aquaticus half are 

 A", pusillus (labelled Bradfield and Southport), and among the same 

 number of N. palustris there are five N. Injpocrita (labelled Bradfield, 

 Wellington College, Lundy Island, and Garve, Ross.). They are 

 common species on the Continent, and are probably generally distri- 

 buted here. 



N. pusillus resembles N. aquaticus in having dark tibia?, but is 

 distinguished, according to Ganglbauer, by being smaller and nar- 

 rower ; the labial palpi have the base testaceous ; the striae of the 

 elytra extend further towards the apex, where there is a double im- 

 pressed pore; in the $ the last joint of the maxillary palpi is 



