'with an Account of its Devclopcment. 495 



B. Posterior face of the metatho-" 

 rax smooth in the centre, and 

 rugose laterally. The last 

 joints of the antennae uni- 

 form in both sexes. 



Symm'orphus Wesm. 

 (Odynerus Latr., Curt., Steph) 



Genus 1. ODYNE v RUS Latr. Shuck. 

 (Epi'poxe Kirby, Steph., Curt. ; O'plopus Wesm.) 



Sp. 1. O. spi'mpes Latr. 



Vespa spinipcs Lin., <§ Fab., Rosi, Illiger, Oliv., &c. V. murdria $ 

 Latr. &c. 

 Sp. 2. O. lte'vipes Shuck, n. sp. 



Niger, flavo varius, glaber, genis inflatis. Alas., femoribus intermediis 

 inermis. 



Female. Black, shining, glabrous, or, viewed under the 

 lens, sparingly covered with short grey hair. Head and thorax 

 deeply and coarsely punctured. Head, seen from above, 

 squarer than in the former species, and the cheeks appearing 

 somewhat swollen. A small yellow dot on each side, above, 

 behind the eyes, and two yellow spots, which sometimes 

 coalesce between the insertion of the antenna?. The clypeus 

 deeply emarginate, very convex, less punctured than the rest 

 of the head, and with an oblique yellow line on each side, at 

 its base. 



The thorax with a small yellow mark on each side of the 

 collar, and another, smaller, beneath the insertion of the wings. 

 The tegulae red-testaceous, with a minute yellow spot behind. 

 The wings subhyaline slightly clouded, with a narrow dark 

 border at their extremity ; the stigma and nervures piceous, 

 except the costal, which is testaceous. The legs, with the 

 extreme apex of the femora, the tibiae, and tarsi, yellow- 

 testaceous. 



The abdomen minutely punctured, with a very narrow 

 yellow border to the first five segments; widest on the second, 

 especially laterally, where it slightly dilates ; and continued, 

 but still more slightly, upon the ventral plate ; and that of the 

 fifth abbreviated on each side. 



The male differs, in having the clypeus (except its extreme 

 lateral edges, and the teeth of the emargination, which are 

 black), the labrum, the middle of the mandibles, and the scape 

 of the antennae beneath, all yellow. Their tenth and eleventh 

 joints, and sometimes the entire spiral portion, red, testaceous. 

 The yellow on each side of the collar forming a line ; a minute 

 yellow spot, also, in front of the tegulae ; the intermediate and 

 posterior coxae in front yellow ; and a yellow mark towards 

 the apex, beneath, of the intermediate femora ; and the colour 

 of the tibiae and tarsi more inclining to yellow. The sixth 

 segment has, also, an abbreviated yellow line ; and the yellow 



