320 HYMENOPTERA ACULEATA. 



(7) 14. $, sixth abdominal eegment clothed 

 with white haira; ? scopa white; 

 apices of ventral segments fringed . argentata. 



M. maritima, Kirhy. — Black, head and thorax closely 

 puncturedj face in the ^ densely clothed with pale 

 ochreous hairs, mandibles in the c? whitish towards 

 the apex beneath, in the ? largely flattened, so as 

 to be on the same plane with the clypeus, with a long, 

 deep groove, extending from between the apical and 

 subapical teeth almost to the base, apical joint of 

 the antennae in both sexes compressed, and in the <$ 

 somewhat dilated ; thorax clothed with fulvous brown 

 hairs, paler and brighter in the ^, wings with a slight 

 apical cloud, mesopleurje and propodeum with paler hairs; 

 abdomen closely and finely punctured, with deep, trans- 

 verse impressions in both sexes, each segment in the c? 

 densely clothed with erect, fulvous hairs, the hairs of the 

 apical segments more dusky ; ? with the first and second 

 segments clothed with erect, pale hairs, the rest with 

 brownish or black ; all the segments in both sexes with 

 entire apical bands of short, pale hairs ; apical crest of the 

 sixth segment in the <? narrowly emarginate, and deeply 

 foveated at the base of the emargination, both dorsally 

 and ventrally, actual apex of sixth segment largely and 

 semicircularly emarginate, its lateral angles prominent, 

 seventh segment with its apex truncate ; ventral segments 

 finely punctured, first, second, and third densely clothed 

 at the apex and sides with long, pale hairs, fourth with 

 its apical margin pale, submembranous and truncate, fifth 

 with a suboval, pale, rugose, central patch, extending to 

 the base, and slightly overlapping the posterior margin of 

 the segment, sixth very short, submembranous, except 

 laterally, the centre produced into a narrow, truncate wing, 

 its angles acutely produced at the sides, on each side 

 of the segment is a patch of hairs or spines, with curiously 

 reflexed apices, seventh so thin that I have been unable 



