XVII. ASTATA. 97 
the segments very much depressed, and the terminal one hav- 
ing the margins of its apex reflexed and separated from the 
hypopygium by a horizontal incision. 
Type, A. boops. 
+4+ This genus was established by Latreille, in his 
** Précis.” Its name is derived, from its incessant motion, 
from « priv. and satos—standing, i. e. not standing. 
Jurine figured the genus in his work, in 1807, by the name 
of Dimorpha, either from not knowing Latreille’s book or 
not recognising the insect from the characters, and Panzer 
has followed him in his “ Revision ;” but subsequent Ento- 
mologists have adopted Latreille’s name, it having the 
priority. 
Sr. 1. sooprs. Schrank. 
atra, abdominis basi rufo. 
length 4—7 lines. 
V. d. Lind. pt. 2. 27. 
Sphex boops. Schrank, Enum. Insect. Austrie indigen. 384.77 ; Villers, 
3. 249. 82; Rossi, 1. 128. 284. 
Tiphia abdominalis. Panz. 53. 5. 
Larra pompiliformis. Donovan, Brit. Insects, 12. 73. Pl. 4. 
Astata abdominalis. Latr. Hist. 13. 297. 1; Nouv. Dict. 3.25; St. 
Farg. Ency. Méth. 10. 144. 
victor. Curtis, Brit. Ent. 6. Pl. 261. 
Black, punctured, pubescent: the head having the face and 
cheeks covered with a silvery griseous pubescence, the vertex 
quite smooth and shining, with a longitudinal impressed line in the 
centre, and only a few scattered punctures towards the occiput. 
The thorax having the dorsolum and scutellum smooth and 
shining, the former being thickly punctured in front, and with a 
very few points scattered over its disk and behind, as well as the 
scutellum, the latter frequently with a deep longitudinal impres- 
sion in its centre ; the post-dorsolum also smooth; the metathorax 
reticulated, formed by longitudinal and transverse elevated lines, 
the former being the most prominent and generally somewhat 
H 
