Descriptions of Hymenoptera from Baltic Amber. 
19 
(Second recurrent joins second submarginal cell at apex.) 
Width of flagellum 136 
Distance between antennae 255 
Length of flagellum 986 
Venation of hind wings as in G. mirabilis . 
A moderate ventral scopa, as in G. fuscida. 
Ctenoplectrella gen. nov. 
Ctenoplectrella viridiceps sp. nov. 
5 . (Sting visible.) Eyes bare. A small black stout bee like 
Glyptapis , hardly 5 mm long. The abdomen is slightly greenish, and 
in a strong light it can be seen that the face and front are metallic 
green, the clypeus with some coppery tints; but the mesothorax and 
Fig. 14. Ctenoplectrella viridiceps Ckll. 
a Second antennal joint. b Sculpture of mesothorax. c Claw. d Second submarginal cell. 
e Stigma. 
vertex are pure black. Head broad; thorax with a rather shining, 
sericeous surface, not obviously sculptured; abdomen similar, the hind 
margins of the segments narrowly pallid. Antennae wide (714 y) apart, 
but only about 221 y from eye margin; anterior edge of clypeus straight; 
mandibles with a sharp apical tooth, 85 y long (another specimen shows 
the mandibles better; they are truncate-tridenticulate, the middle tooth 
nearer to the upper than to the lower); malar space an exceedingly 
narrow band, little more than 34 y from eye to mandible; ocelli large, 
in a curve, diameter of middle ocellus 187 y ; antennae much as in 
Glyptapis , but first joint of flagellum, though very distinct from the 
rest, barrel-shaped, 13 6y long and 102 broad; flagellum 136^ across, 
and 1105 long; scape with very short hair; front with sparse but 
distinct punctures, and sparse erect hairs, which are sparingly plumose. 
2 * 
