1899.] NATURAL SCIENCES OF PHILADELPHIA, 425 



Chapada, March and November. Two specimens. The almost 

 smooth, leatheplike surface of middle segment is characteristic of 

 this species. 



Zethus notatus n- sp. 



Black ; abdomen with pale sericeous pile ; mandibles except tips, 

 broad line surrounding the anterior and lateral portions of clypeus,^ 

 spot at each side of face, behind each antenna, in the eye-emar- 

 gination, at summit of eyes, stripe on posterior orbits, spot at each 

 side of pronotum anteriorly, beneath wing and at each side of 

 scutellum, outer margin of tegulte, large spot on fore femora near 

 apex, their tibiae in fi'ont, stripe on medial tibise, line at apex of 

 petiole and a slender one at apex of segments 2 and 3, yellow; 

 wings subliyaline, a fuscous cloud in the costal cell anteriorly. 



?. — Head flat, the front and vertex finely striato-punctate; 

 clypeus subtilely striato-punctate, shaped as in Z. thoracicm, about 

 one-third broader than long, the fore margin broadly produced, 

 subtruncate or subrounded, the side lying between the lateral angle 

 and anterior margin incurved; no carina between antennae; the 

 latter with flagellum subclavate, the first joint a little shorter than 

 the following two united ; space between hind ocelli somewhat de- 

 pressed, a little less than that between them and eyes; thorax 

 elongate, the prothorax lengthened, narrowed and sharply mar- 

 gined anteriorly, subdeutate laterally, with strong separated punc- 

 tures; dorsulura nearly one-third longer than broad, rather subtilely 

 striato-punctate; suture between dorsulum and scutellum coarsely 

 foveolate, the latter impressed; postscutellum subcariuate laterally; 

 middle segment depressed or subconcave medially Avith two sharp 

 slightly diverging carinae beginning one at each side of postscutel- 

 lum, the depressed surface lying between them with not very strong 

 transverse rugae, the surface between them and the feeble lateral 

 carina covered with deep rounded holes, somewhat resembling 

 reticulations, sides smooth at base, coarsely punctured above and 

 posteriorly; enlarged portion of petiole subtruncate anteriorly, its 

 junction with the basal stem forming an angle when viewed from 

 side and transversely carinated, the enlargement is stout, widest 

 at base, strongly contracted just before the apex, the upper surface 

 very coarsely punctured especially basally, carinated down middle, 

 and with a strong depression before apex, the ventral surface bear- 



