10 



Numerous localities for the diiferent species will be found in the 

 valuable paper on Stenus, published long ago by Messrs. Waterhouse 

 and Janson, in the Entomological Society's Transactions ; but those 

 given herein are from the observations of myself and my friends Messrs. 

 Bold, Graham, Hislop, Crotch, Sharp, Grameys, &c. 



BiPUNCTATUS, Ericlison. 2\ lin. Similar in colour and general 

 appearance to the preceding, but larger and more robust. Palpi black, 

 the basal joint only testaceous. Compared with higuttatus the head is 

 somewhat narrower in proportion, more closely punctured, and less deeply 

 hollowed ; the thorax is broader in the middle ; the elytra are broader, 

 with the spots larger and a little further from the sature, the apical 

 margin being also not so arched in the centre ; the legs are stouter with 

 the trochanters darker, and the meta-sternum is more delicately 

 punctured. 



In the male the sixth segment beneath has a deeper and more acute 

 notch, and the fifth is rather more sinuated, with similar obtuse points ; 

 but the smooth impressed space reaches further backwards. Both in 

 this and the preceding species the abdomen is clothed with silvery hairs 

 very thickly along the inner sides of the lateral margin, and also in the 

 transverse grooves of each segment. 



Common in the London district, and at Cambridge, often in com- 

 pany with the preceding species, and generally distributed over England. 

 Messrs. Bold and Hislop do not find it in Northumberland or Scotland. 



GuTTTJLA, Muller, EricTison. 2 lin. Narrow, black, antennae 

 pitchy, palpi testaceous yellow, with the second joint sometimes a little 

 darker at the upper extremity, and the apical joint either fuscous at the 

 tip or entirely pitchy brown. Legs testaceous yellow, the femora with 

 the apical half black, and the tibiae more or less fuscous at the lower 

 extremity ; coxae pitchy black. Thorax thickly and strongly punctured, 

 the interstices having a tendency to form irregular elevated shining 

 longitudinal ridges. Elytra with the shoulders and a ridge near the 

 suture similarly elevated, rather more coarsely punctured, and with the 

 fulvous spots (which are large and rather irregular) nearer the exterior 

 margin than either of the preceding. Abdomen attenuate, closely and 

 rather strongly punctured. The meta-sternum is very coarsely 

 punctured. 



In the male the sixth segment beneath is scarcely perceptibly 

 sinuate, the sinuation in the fifth segment being more conspicuous ; in 

 the latter also there are two longitudinal rows of silvery hair, beginning 

 at the middle and getting longer towards the apex, where they form a 

 thin tuft on each side of the sinuation. 



