368 HYMENOPTERA. 



from the base to the apex of the metathorax; the wings fusco- 

 hyahne, palest at their apex, with a dark fuscous cloud occupy- 

 ing the marginal cell ; the tibiae, tarsi, and tips of the femora, 

 yellow; the tibiae behind and the posterior tarsi above, rufo- 

 fuscous. Abdomen smooth and shining; a narrow yellow fascia 

 on the posterior margin of each segment ; a single style or pro- 

 cess at the apex of the abdomen. 



Hab. Nova Scotia, (Coll. Lieut. Redman.) 



This species at first sight closely resembles the G. 4-cmctus of 

 Europe. 



29. GORYTES NIGRIFRONS. B.M. 



Female. Length 4h lines. — Black : the head finely and closely 

 punctured, the face with a thin silvery pubescence ; the clypeus 

 coarsely punctured, and having two minute yellow spots at the 

 base ; the scape yellow in front, and three or four of the basal 

 joints of the flagellum of a reddish-yellow beneath ; the apical 

 half of the mandibles ferruginous. Thorax subopake and very 

 closely punctured; the collar, tubercles, a spot beneath the 

 wings, a stripe over the tegulse, and the post-scutellum, yellow ; 

 wings subhyaline, the marginal cell occupied by a dark fuscous 

 cloud, which does not extend beyond it ; the tibiae and tarsi yel- 

 low, the tibiifi with a ferruginous stain behind ; the claw-joint of 

 the tarsi, the femora and coxae dark rufo-piceous ; the calcaria 

 and claws pale. Abdomen shining and very finely punctured, 

 covered with a fine sericeous pile, very brilliant in certain lights ; 

 the three basal segments with a yellow marginal fascia, the first 

 widest, slightly notched in the middle and widened laterally ; 

 beneath, black and covered with a short griseous pubescence ; 

 the second segment with some scattered large deep punctures. 



Hab. Nova Scotia. (Coll. Lieut. Redman.) 



30. GoRYTES PLACIDUS. 



Female. Length 3| lines. — Black, shining and strongly punc- 

 tured : the antennae, clypeus, inner orbit of the eyes, labrum, 

 mandibles and palpi, orange-red ; tips of the mandibles rufo- 

 piceous ; the flagellum with the fourth and following joints fus- 

 cous above. Thorax : the collar, tubercles, an irregular-shaped 

 spot beneath the wings, the sides of the disk of the mesothorax, 

 the scutellum and metathorax, orange-red ; the enclosed space 

 at the base of the metathorax black and longitudinally grooved ; 

 the suture at the base of the scutellum consute; the anterior 

 wings with a dark fuscous cloud extending from the base to their 

 apex, and occupying more than half the width of the wings, 



