1899.] NATURAL SCIENCES OF PHILADELPHIA. 415 



or teeth; petiole elongate, stem stout, hardly as long as hind coxte 

 and trochanters, the enlarged portion cylindrical, broadest basally, 

 its narrowest point is a little before the apex where it is contracted, 

 with deep separated punctures above at base, those toward apex 

 shallower and sparse, ventral surface sharply carinated down mid- 

 dle; second segment finelj" and closely punctured, except along 

 apical margins', the pedicel quite short, much shorter than the apex 

 of petiole is wide; radial side of second submarginal cell distinctly 

 greater than the distance between the first transverso-cubital vein 

 and first recurrent nervure on the cubital nervure; third submar- 

 ginal slightly broader above, somewhat rhomboidal, the outer ner- 

 vure gently sinuous. Length 11-12 mm. 



cf. — Cljpeus about twice as broad as long, entirely yellow, 

 obliquely truncate at sides, subemarginate anteriorly; antennae 

 hooked at tip, the last two joints minute, the penultimate the 

 longer, third joint about oue-tbird longer than second, the tenth 

 subspiuose beneath at apex; middle segment with an additional 

 carina on each side bounding the concavity. Length 8-10 mm. 



Chapada, December; Corurabti, April. Three 9, four J* 

 examples. In the shape of petiole this species approaches Z. cari- 

 natus Smith, but in that species it is not contracted before base, 

 and is rugosely punctured and sharply carinate above. 



Zethus campanulatus n. sp. 



Black; legs brownish; a medially interrupted yellow fascia at 

 apex of petiole; abdomen and thorax more or less with sericeous 

 pile; wings fuscous on basal two-thirds especially in the costal cell, 

 otherwise subhyaline. 



?. — Head above with even, deep, separated punctures, running 

 into longitudinal rugse on front and becoming sparser on cheeks 

 which are shining; no carina between bases of antennae; clypeus 

 fully three times broader than long, angulate at sides, coarsely 

 rugoso-punctate, fore margin truncate, with a tooth at each side 

 and sometimes medially ; flagellum short, the first joint not as long 

 as the two following united, the scape fully as long as the pedicel 

 and following four joints united ; space between hind ocelli equal 

 to a little more than half of that between them and eyes ; prono- 

 tum subcristate, sharply angular at sides with coarse confluent 

 punctures; dorsulum with larger separated punctures, with an 



