VI. POMPILUS. 57 
legs black and simple ; the anterior tibize and tarsi piceous, and 
all the cox and trochanters loosely covered with a sericeous 
down. 
The abdomen of an opaque black; a white spot at the base of 
the seventh segment and the first narrowed into a long petiole ; 
the sixth ventral segment emarginate, and the seventh with a 
longitudinal central] carina ¢. 
@ in my own Cabinet. 
y4+ I am unacquainted with the ¢ which Vander Linden 
considered to be the P. petiolatus, but which insect I have 
shown above to be distinct. Mine was taken in the vicinity 
of London. 
Sp. 8. Hyazinatus. Fab. 
niger, prothoracis lineold utrinque lutosd, ano puncto albo, alas 
hyalinis, femoribus quatuor posticis rufis @. 
length 3} lines. 
Fab. Ent. Sys. Supp. 247.7; V. d. Lind. pt. 1. 46. 11. 
Sphexr hyalinata. Fab. Ent. Sys. 2.212. 56. 
Liris hyalinata. Fab. Piez. 230. 11. 
Black: head punctured ; antennz about as long as the thorax, 
robust ; apex of the mandibles rufescent; face covered with a 
silvery pubescence ; labrum concealed. 
The thorax punctured ; the collar marked on each side with a 
transverse luteous line; the metathorax covered with a sericeous 
reflection; the wings perfectly hyaline or having a very slight 
tinge over the marginal and submarginal cells, the third sub- 
marginal larger than the second; the legs black, with the inside 
of the anterior tibiae, the apex of the intermediate, and the major 
part of the posterior femorze towards the apex, red; the posterior 
tibize with a few slight spines; all the calcaria white. 
The abdomen has a white spot at the base of the terminal seg- 
ment and all the ventral segments entire ¢. 
The 2 I am unacquainted with. 
@ in my own and Mr. Davis’ Cabinet. 
