118 The Rev. Ww. Krnny on a new Order of Insects. 
thickly bestrewed, I feel something of a suspicion, that like 
those of Pausus spharocerus* they may emit a phosphoric light, 
and serve to guide the insect in the dark labyrinths it may have 
occasion to explore. I give this, however, as mere conjecture. 
Professor Peck, as we have seen, obtained his specimens of 
X. Peckii from Polistes fuscata Fabr. ; but the Vespa in which I 
found the exuviz mentioned in Mr. Sowerby's British Miscellany 
was quite a different species, and a true Vespa Fabr. The eye- 
covers in these exuvie are similar to those in the Professor's in- 
sect; but whether they belonged to the same or another species, 
since other species may be attended by the same peculiarity, can- 
not be certainly known. As the Vespa in which I found them 
appears to be non-descript, I shall here add a description of it 
as connected with the subject of this paper. 
VESPA CONCOLOR. 
V. atra tota, mandibulis elongatis forficatis, abdomine : segmento 
secundo basi utrinque lineolä elevatä. 
Long. Corp. lin. 7. 
DESCR. CORPUS atrum, glabrum, obscurum. 
Carvr trunci fere latitudine punctatum. Mandibule elon- 
gate; apice forficatze acute ; intus tridentate: dentibus 
obtusis; supra longitudinaliter elevato-lineate. Labrum 
minutum, integrum. Nasus apice emarginatus. . 
 "TnauNcvs punctatus, antice linea elevata dorsali levi. Ale 
nigre, colore viole paululüm tinctz. Tarsi unguibus 
testaceis. | 
ABDoMEN ovato-lanceolatum, leviusculum, ex tomento 
parvo fuscescenti reliquo corpore magis obscurum : seg- 
mento secundo (ut in plurimis vespis obtinet) magno sub- 
* Trans. Linn, Soc, iv. p. 261. — 
campaniformi ; 
