222 Mr. J. O. Wigtwood’s descriptions of bees, §c. 
Monia grisea. (PI. V. fig. 6.) 
Tota nigra, subnitida, griseo-setosa, punctata, antennis 
subtus luteis, abdomine segmentis dorsalibus pone medium 
impressione transversi notatis, parte pone impressionem 
in singulo, fascia e setis griseis formata, notata. 
Long. corp. lin. 4; expans. alar. lin. 73. 
Habitat Mexico, prope Piedad Road (D. Coffin, Hym. 
No. 250). In Mus. Hopeiano Oxoniz (olim nostr.). 
This bee is of small size, black, glossy, punctate, and 
more or less sparingly clothed with grey hairs in different 
parts, especially on the lower part of the face and the 
sides and hind part of the thorax. The antenn are 
slender, and nearly as long as the head and thorax ; black 
above, but pitchy-red beneath, with the basal joint short, 
and the terminal one dilated into a flattened, glossy, 
lozenge-shaped capitulum. The tegule are of moderate 
size. The scutellum is entire. The abdomen ovate, 
convex, with the ordinary transverse impression near the 
posterior margin of each segment. The hind legs are 
simple; the tibiz elongate, with long hairs on the inner 
edge, and with two long calcaria; the tarsi of the hind 
lees are simple and finely setose. The 2nd submarginal cell 
is nearly as large as the 3rd, being angulated at its basal 
side, the Ist recurrent vein being received at about the 
middle of its length; the 3rd submarginal cell is much 
narrowed in front, with the 2nd recurrent vein arising at 
a little distance beyond the middle of its hind margin. 
Pl. V. fig. 6, Monta grisea magnified ; 6a, mandible ; 
6), maxilla; 6c, mentum and tongue apparently destitute 
of paraglossze. 
Description of the Plates. 
PLATE IV. 
Fig. 1. Nomia Buddha. 
2. »  Sykesiana. 
3. »  combusta. 
4, »  calida. 
5. » tridentata. 
6. , patellifera. 
PLATE V. 
Fig. 1. Nomia gracilipes. 
2. ,» Kirbii. 
3. y»- Cresson. 
4. »  celestina. 
5 »  tarsalis. 
6. Monia grisea. 
