166 



Mr. E. Saunders' Synopsis of 



(21) 22. Markings of abdomen yellow on a brown ground ; 



posterior tibiae often spined, but the spines 



unequal and irregular, or short and stout. 

 Apex of posterior tibiae in the J with three 



short thick spines 

 Apex of posterior tibiffi in J with long irregular 



pale spines. 

 Scape of the antennte entirely black in the ^ ; 



mesothorax entirely black in the $ . 

 Prothoracic tubercles entirely flavous in the J ; 



margined with flavous in the ^ 

 Prothoracic tubercles ferruginous in both sexes 

 Scape of antennas flavous beneath in the ^ ; 



mesothorax in the J more or less striped with 



red 

 Mandibles bifid or truncate at the apex. 

 Mandibles bifid 

 Mandibles simply truncate 

 Labrum black, or species very small (furva). 

 Head without a sharp keel between the antennte 

 Head with a sharp keel between the antennae. 

 (J , anterior femora flattened and dilated ; J 



with an elevated tooth on the labrum ; species 



large 

 (J anterior femora simple ; $ labrum simple. 

 Labrum black. 

 (J with the 3rd, 4th, and 5th joints of the 



flagellum somewhat swollen, the 5th to the 



9th with a small tubercle beneath ; $ antennte 



short ; 2nd and 3rd joints of flagellum sub- 

 equal 

 (38) 39. (J antennae simple; $ antennas long; 3rd joint 



of flagellum much longer than 2nd. 

 (41) 40. (J face entirely black ; J antenna with a wide 



black band below the apex 

 (40) 41. (J face at the sides above the mandibles, clypeus, 



and mandibles, flavous ; $ antenn® entirely 



pale 

 (37) 42. Very small species ; labrum pale 



guttulata. 



lateralis, 

 borealis. 



ruficornis. 



bifida, 

 ochrostonui. 



obtiisifroiis. 



arinata. 



ferruginata. 



Fabriciana. 



flavoguttata. 

 furva. 



1. Nomada fucata, Panz. (PI. VI., figs. 3 — Sb). 



Panz,, Faun. Germ., 55, 19 = varia, Panz., Smith, 

 Cat. Brit. Hym., 2nd ed., p. 119. 



Black. Antennae clear rufo-testaceous, those of the ^ with a 

 black spot on the 7th and 8th joints above. Thorax with flavous 

 markings ; scutellum with a single central spot. Abdomen banded 

 with yellow ; basal segment brownish red on the disk. 



^ . Head and thorax black, clothed with pale hairs, dull, largely 

 and rugosely punctured ; mandibles, labrum and clj'peus, clothed 

 with silvery haii-s, the sides of the face above the mandibles 



