246 HYMENOPTERA. 



73. NOMADA SANGUINEA. B.M. 



Female. Length 3i lines. Bright red, the face and cheeks have 

 a thin scattered silvery pubescence ; the two basal segments of 

 the flagellum above, and the eighth to the twelfth segments above 

 fuscous, a large triangular black patch on the metathorax beneath 

 the post-scutellum, also an oblique black stripe behind the in- 

 sertion of the posterior wings ; the wings fusco-hyaline, a pale 

 macula towards their apex ; the posterior tibiae have a fuscous 

 stain within ; the posterior coxae covered with silvery pubescence, 

 a line of the same on each side of the metathorax ; the margin 

 of the apical segment of the abdomen fringed with silvery-white 

 pubescence. 



Hab. Algeria. 



74. NOMADA VARIABILIS. 



Nomada variabilis, Lucas, Explo. So. Alger.iii.216. 155.pl. 10. f. 7. 

 Hab. Algeria. 



75. NOMADA VALIDA. B.M. 



Female. Length 4 lines. Black, the anterior portion of the 

 clypeus, and sometimes a dot above, the antennas, labrum, man- 

 dibles and orbits of the eyes ferruginous ; the disk of the thorax 

 has on each side a large oblong ferruginous spot deeply notched 

 anteriorly ; the tubercles, a minute spot beneath the wings, some- 

 times united to a large one beneath, the scutellum and two mi- 

 nute spots beneath on the metathorax, ferruginous ; wings sub- 

 hyaline, a pale spot towards their apical margins which are 

 clouded, their nervures pale ferruginous ; the coxae, trochanters 

 and femora ferruginous towards their apex, the anterior pair of 

 the latter being black merely at their extreme base ; the tibiae 

 and tarsi ferruginous. Abdomen ferruginous, the first segment 

 being black at the base, the apical margins of the segments 

 having an indistinct darker stain. 



Hab. Nova Scotia. 



76. NOMADA IMBRICATA. B.M. 



Female. Length 4| 5 lines. Head ferruginous, a black spot 

 above the insertion of each antenna, also a minute black dot on 

 each side of the clypeus, above which there is sometimes a yellow 

 spot ; thorax ferruginous, the collar, tubercles, two spots on the 

 scutellum, and an oblique line on each side of the metathorax 

 yellow ; a line down the centre of the metathorax and another 

 oblique one on the sides of the thorax behind the wings black, 



