1912] Brazilian Ichneumonide and Braconide 201 
The present form approaches C. hyalina Brullé, which it 
resembles almost exactly in color, but the sculpture of the 
metanotum is very different. 
Cryptanura striata Brullé. 
Hist. Nat. Ins., Hyménop. Vol. 4, p. 244 (1846). 
There is a male from Manaos (Mann and Baker) which 
appears to be this species, although differing from the female 
described by Brullé in having a short whitish stripe anteriorly 
on the inner edge of the lateral lobe of the mesonotum. The 
metanotal spines are blunt and the median metanotal stripes 
are abbreviated in front. The mandibles bear a large pale 
spot externally. 
Polycyrtus histrio Spinola. 
Ann. Soc. Ent. France, Vol. 9, p. 155 (1840). 
Brullé, Hist. Nat. Ins., Hyménop. Vol. 4, p. 214 (1846). 
There are two males of this species from Manaos (Mann 
and Baker). 
Ophiogastrella Gen. nov. 
Clypeus not pointed, truncate on the anterior margin. Eyes 
deeply, angularly emarginate on the inner margin. Face without a 
tooth, but with a faint cariniform tubercle just below the antenne. 
Ocelli very large. Head strongly transverse, narrowed behind the eyes, 
the vertex not margined behind, although the temples and cheeks are 
distinctly margined. Mesonotum without furrows or  parapsidal 
impressions at the anterior margin. Metathorax short, abruptly 
declivous; smooth, finely punctulate, entirely destitute of carine. 
Tarsal claws small, pectinate. Basal section of radius straight, not 
thickened; last section recurved. Submedian cell barely shorter than 
the median. Discoidal nervure arising at the upper fourth of the 
second discoidal vein. Disco-cubital vein very strongly bent, but not 
broken; its basal and apical portions running very nearly at right 
angles to each other. Cubito-discoidal cell without any dark chitinized 
spots. Transverse median vein in hind wing broken at its lowest 
fourth; the first section of the radius in this wing nearly twice as long as 
the recurrent nervure. Abdomen strongly compressed, very slender at 
the base, the first segment longer than the second, its spiracles placed 
at the apical third. 
Type. Ophiogastrella maculithorax sp. nov. 
This genus is related to Pseudanomalon Szépligeti, but 
differs in several important characters, particularly the form of 
the metathorax, which is neither elongate between the hind 
coxe nor rugose-reticulate. From other related genera it differs 
