518 Mr. E. Saunders on Hyimnoptera Acvleata: 
1. Sphex [Haiipactopus] eatoni, n. sp. 
Niger, capite pro- et mesonoto (scutello excepto) pilis adpressis 
argenteis dense vestitis. Ad S. higentem Kolil proxime accedit, is 
tamen rugis validis mesonoti facile distinguitur. Etiam S. tyranno 
Smith colore similis, is autem differt pedibus setis rigidis instriictis. 
Ab S. stschurowskii Rad. propter scutellum rugosum etc. mox 
distinguendus. 
Black clothed with black hairs. 9 with the face (except a 
bright glabrous spot at the apex of the clypeus), the vertex, the 
pro- and mesonotum (excluding the scutellum), and the base of the 
tegulae covered with a dense silvery pubescence which entirely 
hides the sculpture beneath. ^ resembling the $ but with only 
the face and mesonotum silvery. Clypeus covered with somewhat 
remote black bristles which project beyond the silvery surface, its 
apical margin rounded, raised and slightly sinuate in the centre, 
more truncate in the ^ than in the 5 —^just above the apex is a 
shining shallow impression. IMandibles in the § large, the apical 
tooth very elongate, more so than in stschurowskii var. hyalipennis. 
Kohl. Head with black hairs in the ^, the cheeks behind the eyes 
with a long beard. (In the ^ tbe only long black hairs are on the 
cheeks beneath, the mandibles, clypeus, and labrum ; a few very 
short ones show through the silvery hairs of the vertex and back 
of the head.) The pronotum propleurae and prosternum are 
obliquely striate where the surface is not hidden by the silvery 
pubescence (as it is, partly, in the $ ). jMesopleurae and sternum 
rugose above, the rugosities [ ? of the former] taking the form of 
striae as they approach the sternum in the $ ; entirely rugose (as 
well as the sternum) in the ^. Tegulae clothed at the base with 
silvery hairs in the 5? with greyish-black ones in the 
Wings nearly black, with violet reflections : the hind-wings in 
the $ clear only beyond the cells; the 2nd submarginal cell 
narrowed to its apex where it is scarcely more than half as wide 
as its base ; the 3rd a little less narrowed towards its apex than 
is the 2nd in the $, narrowed in about the same proportion as 
the 2nd in the ^ ; (the bases of the two cells are of about equal 
length). 
Scutellum moderately convex, rugose with signs of longitudinal 
striae ; postscutellum transversely strigose. Propodeum with a penta¬ 
gonal area which is clothed with rather short semi-decumbent 
hairs and rugose in both sexes—its sides are rugosely diagonally 
strigose, and in the ^ the rugosities towards the base of the abdomen 
are larger, and tend to become clathrate. In one of my 5 ^ the 
area tends to be rufescent in certain lights. Legs entirelj^ black, 
