of the Amazon Valley. 
315 
pressum. Caput exsertum^ angustum, antice paulo pro- 
longatum et attenuatum ; oculis paulo prominentibus ; 
palpis brevibus^ articulis terminalibus apice attenuatis 
truncatis ; antennis pilosis, apicem versus atteuuatis, 
articulis tenuibus, apice intus paulo productis. Thorax 
tuberosus, antice valde angustatus et forte constrictus. 
Elytra plana, abdomine quarta parte breviora, apicem 
versus attenuata et dehiscentia, apice obtuse acuminata. 
Pedes pilosi, postici longiores et robustiores; femora 
omnia abrupte clavata; tarsi breves. Cox^ anticm 
conicm, exsertse. Abdomen ( $ ) segmento ventrali prime 
magno, integro, secundo paulo minori, postice semicircu- 
lariter emarginato et longe ciliato, reliquis profunde 
depressis. 
1. 8tenoptrellus cuUcinuSj n. sp. 
Niger, nitidus; thorace tuberibus octo insequalibus, 
duobus medianis linearibus ; elytris pallide ochreis, pas- 
sim grosse punctatis, linea elevata laterali a medio usque 
ad apicem; abdomine segmentis duobus basalibus rufis. 
Long. 3i lin. $ . 
Hah. — Ega; on flowers. 
Sub-fam. NscYDALOPSiNiE. 
Genus Sthelenus. 
Buquet, Ann. Soc. Ent. Fr. 1859, p. 621 ; Lacord. Gen. 
viii. 494. 
1. Sthelenus hmconinus, n. sp. 
S. ichneumoneo (Buquet) affinis, differt thorace antice 
nigro, pedibus anticis et intermediis totis rufis. Linearis, 
testaceo-rufus, capite, antennis, plaga antica thoracis, 
postpectore, femoribus posticis apice, tibiis tarsisque 
nigris ; elytris pallidis, fascia paulo post medium fusca. 
Long. 5-7 lin. S $ • 
Hah. — St. Paulo, Amazons. 
Eesembling to deception certain common species of 
Bracon, Fam. Ichneumonidce. Found flying at mid-day 
on low bushes ; the limbs, as in Ozodes and the Clyti, are 
extremely fragile, breaking ofi* almost at a touch. 
