XXX. GORYTES. 211 
And, besides, exclusive of the character of the wing, these 
insects are held together by general habit, and even by their 
colour and its distribution ; for instance, they are all more 
or less banded with yellow ona black ground. Nor do these 
observations militate against what I have done in the genera 
Stigmus and Pemphredon, where the divisions are intro- 
duced upon ‘ the uniform principle adopted,’ viz. the neu- 
ration of the wings; and borne out by those, and other 
marked, discrepancies. The synonymy of some of the 
following species is very confused. 
Sp. 1. mystacevs. Lin. 
niger, scutello flavo (& concolore), abdomine fascus tribus vel 
quatuor flavis, prima interruptd, tibiis ferrugineis, ($ flavis 
nigrisque). 
& antennis thorace longioribus. 
length 42—6} lines. 
Latr. Gen. 4. 89; Illig. F. Etr. 2. 144. 873 ; V.d. Lind. 2. 94. 9; St 
Farg. Ann. de la S. E. de F. 1. 57. 1. 
Sphex mystacea. Lin. S. N. 1. 944, 21; F. S. 1653; Villers, 3. 231. 
32; Christ. 270. 
Crabro mystaceus. Fab.S. E.375.9; Spec. 1. 471.11; Mant. 1.297. 
19; Oliv. Ency. Méth. 6. 516. 21. 
Mellinus mystaceus. Fab. E. S. 2. 285.1; Piez. 297.1; Panz. F. G. 
53. 11. 
Arpactus. Fab. Piez. 300. 12. 
Arpactus mystaceus. Jurine, 194, 
Vespa campestris. Lin. F. S. 1677; S.N. 950. 13; Fab. 8. .E. 369. 
31; Spee. 1.465. 41; Mant. 1. 291. 50; Rossi, 2, 88. 873 ; Christ. 
234; Oliv. Ency. Méth. 6. 689. 96. 
Mellinus campestris. Fab. E.S. 2. 287.6; S. Piez. 299. 9. 
Arpactus campestris. Panz. Rev. 2. 165. 
q 
Head black, punctured, pubescent; antennz entirely black, 
nearly the length of head and thorax; an ovate oblique yellow 
spot on each side at the base of the clypeus, frequently united ; 
mandibles black. 
P2 
