NEW BUITISH SPECIES, ETC., IX 1864. 55 



joint of the palpi and the legs darker, and the coxas and 

 trochanters blach. In the male, the abdominal characters 

 appear to be much the same as in iS. Rogeri. 



18. Stenus scrutator, Erichson, Gen. et Spec. Staph. 



708, 33 ; G. R. Crotch, Cat. Brit. Col. ; E. G. Rye, 

 Ent. M. Mag. vol. i. 61. 



Closely allied to S. speculator, but rather smaller, the palpi 

 Avith the second and third joints pitchy, except at the base, 

 the legs pitchy, the femora pitchy-testaceous from the base 

 to beyond the middle, and the elytra longer. The meta- 

 sternum is not hairy, and the male characters differ som.e- 

 what, the fifth segment in scrutator having a wide polished 

 depression in the middle, terminating in a wide emargination, 

 on each side of which is an elevated rido'e. ending^ in a some- 

 what prominent tooth. Superficially, this species much 

 resembles S. lustrator, but with lon2:er elytra. 



Two specimens were taken in Richmond Park, Surrey, in 

 May, 1857, by Mr. E. Shepherd, named by Mr. E.^ W. 

 Janson, and confirmed by Dr. Kraatz. 



19. Stenus SYLVESTER, Erichs., ioc. cit. 34 ; G. R. Crotch, 



Cat. Brit. Col. ; E. C. Rye, Ent. M. Mag. vol. i. 61. 



Allied to speculator, but much smaller, the last joint of 

 the palpi fuscous, and the legs pitchy-testaceous, with the 

 tips of the femora and the tarsi pitchy. The male characters 

 also differ, the fifth segment of the abdomen beneath having 

 a wide, central, very polished depression, which is also 

 exhibited in a lesser degree on the fourth, third and second 

 segments. 



A single specim.en, *' from Northumberland," named hy 



