180 Mr. E. Saunders' Synopsis of 



15. Nomada ochrostoma, Kirb. (PI. VI., figs. 11 — 11 h). 



Kirb., Mon. Ap. Angl., ii., p. 209 ; Smith, Cat. Brit. 

 Hym., 2nd ed., p. 116 = lateralis, Smith, pars ?=:punc- 

 tiscuta, Thoms. 



Very like the variety of ruficornis with small lateral spots on 

 the abdomen ; mandibles truncate at the apex ; mesothorax and 

 scutellmn very coarselj' and rngosely punctured ; $ with the scape 

 of the antennae ferruginous ; J with the mesothorax with red longi- 

 tudinal lines; 2nd segment of the abdomen with a small round 

 yellow spot on each side. 



(^ . Head and thorax black, coarsely and deeply punctured, 

 clothed with pale ochreous hairs, face below the antennae with 

 silvery ones ; mandibles, except their piceous apices, labrum, cly- 

 pex;s in front, and the face at the sides of the clyj)eus, flavous ; 

 mandibles simply truncate ; clypeus truncate, the angles of the 

 truncature more or less prominent. Antennae with the scape 

 beneath and the flagellum fulvous ; scape above and the first five 

 or six joints of the flagellum above black ; 3rd joint much longer 

 than 2nd. Thorax with the tubercles and tegulae testaceous : wings 

 smoky ; scutellum raised, very largely punctured, with two red 

 spots, or entirely red ; metathorax hairy and rngosely punctured at 

 the sides. Abdomen ferruginous, black at the extreme base ; 2nd, 

 3rd, and 4th segments with a small lateral pale yellow spot on 

 each side ; 5th with a transverse discal spot on each side ; 6th with 

 a single transverse discal spot; 7th narrowly emarginate at the 

 apex ; in some varieties there is a black line at the base of the seg- 

 ments, and in some the spots are larger, and the surface of the 

 abdomen clothed with a fine white pubescence ; beneath with the 

 segnaents more or less darker at the base and apex ; 6th segment 

 densely hairy at the apex, and with a small pale spot, — in some 

 varieties some of the other segments are occasionally spotted with 

 yellow ; 8th segment with the apical process short, much curved, 

 widened at the apex ; sides fi'inged with spines near the apex and 

 hairs towards the base (for genitalia, see PL VI., figs, 11 — 11 6j. 

 Legs ferruginous ; femora at the base and often a spot on the tibiae 

 black ; apex of the tibiae armed outwardly with irregular spines 

 and clothed with fine white hairs. 



2 . Very like that sex of ruficornis, but with the mandibles 

 truncate ; the 2nd segment of the abdomen with only a small 

 round lateral spot ; the antennae shorter, and the puncturation of 

 the thorax, and especially of the scutellum, mi:ch larger. Length, 

 7 — 8 mm. 



Hah. London District, Chobham, Norwich, Plymouth, 



