VI. POMPILUS, 49 
account of its greater euphony. Panzer, in 1806, in 
his “ Revision,” called them Cryptocheilus, (a very cha- 
racteristic name,) but by the law of priority it necessarily 
falls. 
The Rev. F. W. Hope has remarked to me that he has 
observed some of the species nidificate in wood, which 
St. Fargeau appears to confirm. I have never observed 
any myself with these habits, but it would necessarily be 
such as are without the ciliation of the tarsi. The majority 
make their cells in sand, which they provision with Arach- 
nidee. 
(a) Abdomen entirely black, or with a grey or silvery 
pubescence. 
Sp. 1. PULCHER. 
cinereo pubescens abdominis segmentis basi atris, alis albis apice 
nigris 9. 
plumbeus, antennis atris, alis anticis apice nigris ¢. 
length 23—4}$ lines. 
Fab. E.S. Supp. 249. 19; Piez. 193. 29; Spin. 1. 69. 4; Coqueb. 
2. 52. pl. 12. f.8; V.d.L. pt. 1. 37. 
Sphex plumbea. Fab. Mant. 1. 278.64; E. S. 220. 92; Rossi, Mant. 
1. 127.280; Villers, 3. 242. 57; Fab. Piez, 215. 40. 
Larra seamaculata. Spin. I. p. 16. II. 75. 
Head and thorax black and punctured: a longitudinal line 
running from the base of the antenne to the first stemma; the 
clypeus and face on each side of the antennz covered with a 
dense silvery grey pubescence; the mandibles piceous and 
forcipate ; labrum concealed. 
The thorax having the metathorax very delicately punctured 
and shining, with a longitudinal central impression ; the wings 
with their nervures black, and the extremity of the superior pair 
also black, forming a band which extends inwardly as far as the 
marginal and third submarginal cells, which latter is constricted 
E 
