418 Rev. Canon Fowler ow some 
Hab. New Granada (Nolken), (Vienna Museum Collec- 
tion), three specimens; Ecuador (H. de Ville), (Belgium 
Museum Collection), four specimens. 
This species may easily be distinguished from 1’. grossa 
(with which latter species 7. virgata and T’. virescens are 
synonymous) by the shape of the front part of the 
prothorax. I found the specimens above referred to 
among the unnamed material of the Stockholm and 
Vienna Museum Collections, and set on one side as a 
new species; it may possibly be referred to Triquetra 
grossa as a hornless variety, but I have examined a very 
large number of the last-named species, and have not 
found one specimen like 7’. obtusa among them. 
Potnia jansoni, sp. n. 
Testacea, capite sat magno, metopidio supra caput plicato, 
pronoto antice in cornu brevissum. obtusum, rufescens late nigro- 
marginatum extenso, fortiter punctato, cariné centrali, costisque 
utrinque quattuor vel quinque sat regularibus instructo, humeris 
leviter prominulis, lateribus sensim in processum longum extensis ; 
tegminibus prothoracem vix superantibus testaceo-hyalinis, apice 
ipso fumoso ; corpore subtus pedibusque testaceis. 
Somewhat elongate for a Potnia, testaceous, with the pronotum 
strongly punctured, produced in front into a very short blunt horn, 
which is reddish, with the margins broadly black, the black colour 
being extended for a short distance on the dorsum, central keel 
and four or five regular coste on each side well marked, apical 
process long, very slightly deflexed; tegmina produced very slightly 
beyond prothorax, testaceous hyaline with the apical margin 
smoky ; legs and underside testaceous. Long. cum tegm., 8 mm. ; 
lat. int. hum., 3} mm. 
Hab. Demerara (Janson), ¢. (Belgium Museum 
Collection.) 
Potnia perobtusa, sp. n. 
Precedenti affinis, sed minor, colore dilutius testaceo, pronoto 
antice minus porrecto et perobtuse angulato, processuque postico 
breviori et rectiori, apice magis obtuso, distinguendus, 
Very like the preceding, but smaller and lighter coloured and 
less strongly punctured, with the pronotum very obtusely angled 
and not extended into a horn, and with the posterior process 
shorter and straighter ; the tegmina are hyaline with the veins 
testaceous. Long, cum tegm, 7 mm. ; lat. int, hum., 3 mm. 
