XHI. LARRA. 87 
Latreille in his ‘‘ Précis.” Panzer, in his “ Kritische 
Revision,” 1806, again divided it, from a slight difference in 
the oral organs, restricting the genus Zarra to the Z. 
anathema, and calling the others Tachytes ; but I entertain, 
with Latreille, considerable doubt whether they ought to 
be divided generically, as their wings are the same: and in 
a series of foreign species I find the other characters merge 
insensibly into each other, leaving the length of the meta- 
thorax the only tangible one. But I humbly follow in the 
wake of eminent Entomologists and retain it for the present. 
Sp. 1. anatTHEmMA. Rossi. 
nigra, subpubescens, alis violaceis, abdomine antice ferrugineo, 
segmentis ad latera lucidis. 
- length 7}—103 lines. 
Coquebert, Illustr. Dec. 2. Pl. 12. f. 11. 
Sphex anathema. Rossi, 2. 101. 822. 
Liris anathema. Illig. 2. 101. 822. 
Larra ichneumoniformis. Fab. E. 8. 2. 221. 4; Piez. 220. 4; Panz. 
76.18; Latr. Nouv. Dict. 17. 324 ; Coquebert, Dec. 2. f. 10. 
Black: head punctured, pubescent; face within the sulci 
smooth, shining, a deep central longitudinal impression extend- 
ing from the transverse fossulet at the vertex to the occiput; 
antennz black, covered with a brown pubescence, excepting the 
scape, which is glabrous, and beneath rufo-piceous ; the clypeus 
slightly covered with an aurichalceous down. 
Thorax punctured, pubescent; metathorax finely granulated, 
with a longitudinal central carina, which changes into an im- 
pression at the truncation ; the tegule testaceous; wings deeply 
coloured, chiefly towards the anterior margin; legs black, 
pubescent; the tarsi piceous, with the apical joint black. 
Abdomen smooth and shining, the two first segments red, the 
margin of the three first slightly constricted, and of all, from the 
third, piceous in the centre, all the segments covered laterally 
with a dense sericeous down . 
