166 Orper—HYMENOPTERA. 
Spectres 9—PRISTOCERA H@MORRHOIDALIS. 
Pirate XXX, Fic. 7. 
Nigra, subtiliter punctata: abdominis dimidio postico rufo-fulvo ; alis pallide lutescentibus fascia transversa 
pone medium fusca; clypeo porrecto in lobos duos parvos conicos producto; antennis mediocribus gracilibus 
fulvescentibus articulo basali obscuro; collare mediocri antice rotundato, postice dilatato; metathoracis dorso 
spatio subquadrato basali ruguloso parum impresso, linea tenui media notato, parte postica rotundata convexa; 
pedibus nigris; tibiis tarsisque anticis fuscis. 
Long. corp. lin. 44; expans. alar. antic. lin. 7}. 
Habitat ; Brasilia (Guérin-Meneville). In Mus. Hopeiano Oxonie. 
The mandibles are gradually dilated beyond the middle, and terminated by five nearly equal-sized conical 
teeth (fig. 7a). The maxillary palpi are long, setose, and pendulous; the three basal joints thickest and nearly 
equal in length; the three apical ones more slender, longer, and of equal length. The mentum is long, gradu- 
ally widened to the tip; the labial palpi long, 3-jointed, the last joint longest, gradually pointed to the tip. 
The metathorax has a row of very short strie at the base; the nearly square central space is very finely granu- 
lose and opaque, depressed, with a slender raised longitudinal line outside of this space; the sides of the meta- 
thorax are transversely striolated with an impressed and punctured line, close to the lateral margins; the hind 
part is rounded and convex. In these and other respects the species approaches 2. Halidaii. 
A Brasilian insect in the Royal Museum of Stockholm, collected by F. Sahlberg, agreeing in size with the 
preceding, of which I consider it to be a variety only, has the head black, polished, and minutely punctured and 
setose ; the antenne pitchy black, setose, equal to the thorax in length, with the tip of the basal jot and the 
second joint dark chestnut-coloured ; the thorax black, punctured, and setose ; the abdomen smooth and glossy, 
with the three basal seements black, the remainder fulvous, the fore legs black, with the tip of the tibie and 
tarsi dark brownish-chestnut ; the four hind legs black, with the tarsi pitchy ; the fascia of the fore wings is 
broader than in the preceding, with a pale spot at the apex of the postero-discoidal cell, followed by two adja- 
cent spots close beyond the cell; there is also a hyaline spot behind the base of the stigma. The clypeus is 
only subemarginate in the middle of the fore margin, and the metathorax has the quadrate space ill defined at 
the sides, the surface finely rugose, with a row of short striolz at the base. 
Grextus—MESITIUS. 
(Spinola, Compte rendu Hymenopt. de Para, 1846; Mem. Acad. Turin, Ser. ii. t. 13, 1851.) 
Antenne in utroque sexu 13-articulate ; mesothorax parapsidibus bene determinatis; metanotum angulis 
posticis valde prominentibus, dorso pluries carinato; abdomen segmento secundo maximo, segmentis apicalibus 
(insectis desiccatis), interdum in marginem posticum sinuatum contrahentibus ; ale antic cellula radiali longa 
apice incompleta, cellula nulla discoidali. 
Syy.: Heterocelia. Dahlbom, Hym. Europ. ii. Chrysid. p. 21, 1854. 
Isobrachium. Forster (1857). 
Scleroderma (pars). A. Costa, Annuar. Mus. Napoli. 
Epyris (pars). Westw. MS. olim; Lucas (Algeria). 
Srecies 1—MESITIUS CARCELII. Westw. MS. (Z£pyris C.) 
Piatt XXXI, Fie. 9. 
Niger, nitidus, punctatus, griseo-setosus : antennis subbrevibus piceis, articulo basali apice rufescente ; capite 
convexo; collari magno rufo, punctato, medio canaliculato; tegulis rufis; metanoto basi serie striarum brevissi- 
