218 Mr. J. @Westwood’s descriptions of 
tarsis intermediis articulo basali in medio supra angulato- 
dilatato, femoribus posticis mediocribus, tibiis crassis sub- 
trigonis, apice infero producto. (Mas. ) 
Long. corp. lin. 83; expans. alar. antic. lin, 16. 
Habitat in Brasilia (Karby, MS.). In Mus. Britan. 
(olim Kirby). 
To this species, which was unique in the collection of 
the Rev. W. Kirby, was attached a note, ‘ Gen. N. inter 
Andrenam et Panurgum, ¢ sed pollinifer [!] ex tibiis 
posticis. Mus. Norvic. Brasilia.” At the sale of the 
Entomological Society’s collection the specimen passed 
to the British Museum, where it still remains unique. 
Entirely black, clothed with short sooty-black hairs; the 
face on each side more thickly clothed with hair, the 
back of the head finely punctate and nearly naked ; the 
antenn are rather shorter than the thorax, the basal joint 
strongly setigerous, the second joint distinct, the last joint 
dilated and flattened into a rounded capitulum; the thorax 
is nearly round, with large tegulz finely setose; the meso- 
notum opake and closely punctured; the metathorax glossy, 
with a central deep longitudinal impression and a trans- 
verse basal impression deeply and closely punctured; the 
wings are stained with brown and glossy ; the abdomen 
is elongate-obovate, finely and closely punctured, each 
segment with a transverse impression beyond the middle : 
the middle femora are thickened and compressed, with an 
obtuse dentate lobe near the base beneath; the posterior 
femora are thickened but unarmed; the posterior tibice 
much dilated, forming a trigonate mass, with the inferior 
inner angle produced into an obtuse tooth; the basal joint 
of the posterior tarsi is much elongated and setose, espe- 
cially on its under edge; the first recurrent vein of the 
forewings is received at about two-thirds of the length 
of the second submarginal cell. 
Pl. V. fig. 2, Nomia Kirbii magnified; 2a, maxilla 
and its palpus equal-jointed ; 20, labium and tongue ; 
2c, antenna; 2d, hind foot; 2e, terminal segments of 
male abdomen. 
Nomia Cressont. (Pl. V. fig. 3.) 
N. nigra, punctata, subnitida, fuscescenti-villosa; antennis 
longis, apice gracillimis, tegulis piceis glabris; abdomine 
oblongo, segmentis 2—5 margine postico glabris, opalino- 
vir escentibus; femoribus posticis brevibus, valde incrassatis, 
subglobosis ; ‘tibiis brevissimis, subconicis, crassis, angulo 
