HYMENOPTERA. 67 
4. Mernoca CANADENSIS. 
Male. Length 44 lines.—Black and shining, slightly villose, 
the face closely punctured, the vertex sparingly so; the anterior 
margin of the clypeus produced into an elevated tubercle, the 
tips of the mandibles ferruginous. Thorax coarsely punctured, 
the metathorax coarsely rugose ; having above a central channel 
which is transversely ridged; behind, truncate, the truncation 
obliquely rugose-striate on each side, having a slight central 
channel; the legs have the apical joints of the tarsi obscurely 
rufo-piceous, the calcaria ferruginous; wings hyaline, faintly 
coloured. Abdomen: the basal half of the first segment rugose, 
the lateral margins elevated and acute; beyond this, the entire 
abdomen is rather finely and distantly punctured, the base of the 
segments depressed, their margins constricted. 
Hab. Canada, (Coll. F. Smith.) 
Genus 6. SCLERODERMA. 
Sclerodermus, Latr. Gen. Crust. et Ins. iv. 119. 
Scleroderma, Westw. Trans. Ent. Soc. Lond. i. 164. 
1. SCLERODERMA DOMESTICA,. 
Scleroderma domestica (Klug, MSS.), Westw. Trans. Ent. Soc. 
Lond. i. 167.19. 
Hab. Berlin; Albania. 
2. SCLERODERMA THORACICA, 
Scleroderma thoracica, Westw. Trans. Ent. Soc. Lond.ii.167.29. 
Hab. North America. 
3. SCLERODERMA ABDOMINALIS. 
Scleroderma abdominalis, Westw. Trans. Ent. Soc. Lond. 1. 167. 
Bo). 
Hab. Marseilles. 
4, ScLERODERMA NITIDA. ’ 
Scleroderma nitida, Westw. Trans. Ent. Soc. Lond. ii. 167.492. 
Hab. South of France. 
5, SCLERODERMA UNICOLOR. 
Scleroderma unicolor, Westw. Trans. Ent. Soc, Lond. ii. 167.59. 
Hab. Berlin. 
