172 HYMENOPTERA. 



the tibiae, tarsi, and tips of the femora ferruginous ; wings yellow, 

 their apical margins having a dark fuscous border. Abdomen 

 immaculate, with an obscure violet bloom. 



Hab. Algeria, (Coll. W. W. Saunders, Esq.) 



This insect closely resembles S. hicolor in every particular, 

 except the markings of the abdomen ; but the prothorax is shorter, 

 as well as the metathorax : the bloom on the insect is a good 

 characteristic, of which 5. bicolor is destitute, being smooth and 

 shining. 



3. Salius bidens. 



Salius bidens, St. Farg. Hym. iii. 395. 3 S • 



Hab. The Pyrenees. 



Genus 6. NOTOCYPHUS. 



Head as wide as the thorax; eyes large, lateral and ovate; 

 ocelli three, in a triangle on the vertex ; antennae convolute at 

 their apex ; the clypeus short and transverse ; the labrum elon- 

 gate and produced. The prothorax subelongate, the metathorax 

 elongate ; the thorax is rounded anteriorly and truncate poste- 

 riorly. Wings narrower than in the genus Pompilus ; the ante- 

 rior pair having one marginal and three submarginal cells ; the 

 second submarginal cell oblique, and receiving the first recurrent 

 nervure towards its base; the third submarginal cell about the 

 same length as the second, much narrowed towards the marginal. 

 Abdomen sessile, acuminate at its apex. 



1. NoTOCYPHUS SiEVISSIMUS, B.M. 



Female. Length 5-8 lines. — Black : the face smooth, ele- 

 vated before the insertion of the antennae ; a slightly impressed 

 line extends from the verge of the elevation to the anterior ocel- 

 lus ; the anterior margin of the clypeus rounded ; the labrum 

 longer than the clypeus, narrowed anteriorly and truncate at the 

 apex. Thorax smooth and subopake, gradually declining 

 from the disk of the mesothorax to the anterior margin of 

 the prothorax and the verge of the truncation of the metathorax ; 

 wings dark fuscous ; legs without spines, the anterior coxae elon- 

 gate. Abdomen slightly compressed, the first, second, fifth and 

 sixth segments pale ferruginous above; sometimes the apical 

 margins of the third and fourth segments are slightly rufo-testa- 



