94 HYMENOPTEEA. 



transverse, like the central ones, and nearly in a line with them ; the penultimate 

 segment has one continuous line ; and the last segment has a black line down the 

 centre. The basal ventral segment has a large black band at the base, from which 

 proceeds a broad black longitudinal line to the apex (in some examples the entire 

 segment is black), the other segments being edged with black. 



In some examples of the female the ventral segments are almost without black ; 

 others have a longitudinal black line on the basal segment and a more or less long 

 black transverse one on the others. 



A very variable species, especially in the colour of the abdomen in the male. I have 

 examined the type of Monedula montezuma, Smith. 



/ 2. Steniolia SColopacea. (Steniola scolopacea, Tab. VI. figg. 11, 6 ; 11 «, male 

 organ ; 11 b & lie, terminal ventral segment, <$ .) 

 Steniolia scolopacea, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcviii. p. 510\ 



Hab. North America, Nevada, California 1 .— Mexico, Northern Sonora (Morrison), 

 Jaral near Guanajuato (Schumann). 



Antennae with the basal joints pale yellow, the apical ones dull fulvous, beneath ; 

 the third joint one quarter longer than the fourth. Head black, covered with long 

 cinereous hair on the front and vertex, the hair on the face white ; obscurely punc- 

 tured ; the orbits narrowly above (except at the extreme top), broadly beneath, a mark 

 surrounding the anterior ocellus (dilated laterally), the clypeus, labrum, mandibles 

 (except at the apex), and palpi, clear pale yellow ; the maxillae honey-yellow. Thorax 

 covered with long cinereous or whitish hair, Prothorax clear pale yellow, an irregular 

 black line on the edge of the pronotum ; mesonotum black, closely punctured, two short 

 marks in front, a line along the tegulae, a brown mark before the scutellum, a large 

 mark on either side of the scutellum, and the postscutellum, yellow ; mesopleurae and 

 sternum black, a large mark on the former in front and the centre of the latter yellow ; 

 metanotum black, a curved line (dilated laterally at the apex), and the metapleurse 

 (except the edges and a small black mark above), clear yellow. Abdomen yellow, the 

 segments black at the base and apex, the black united by a longitudinal black line on 

 the first, second, and third segments ; on the second segment a black line runs from 

 near the base of the central line, the former bending down and uniting with the apical 

 line, thus enclosing two large yellow spaces ; the lines on the other segments project 

 laterally and in the middle ; apical segment waved in the centre, bare, impunctate ; 

 ventral segments black at the edges, the black not continuous on the basal segments 

 and projecting in the centre on the second, fourth, and fifth. 



The Sonoran example quite agrees with the description of Handlirsch. S. scolopacea 

 may be distinguished from S. longirostra by the more distinct sculpture ; and by the 

 femora being yellow lined with black, never reddish as in S. longirostra. I believe 

 that S. scolopacea is a good species. 



