288 MONOGRAPHIC CHALCIDITUM. 



in individuals, or are oftener met with, being constantly 

 engaged in search of chrysalises wherein to deposit their eggs. 

 They comprise by far the greater part of the pentamerous 

 Chalcidites. The parts of the mouth do not vary much. 

 Generally the prothorax and the metathorax are very small, 

 and the sutures between the parapsides and the senium of the 

 mesothorax indistinct. The first and last divisions depart 

 from this structure; the first resembles many of the Miscogas- 

 teridcB and Ormoceridce, the last is allied to the Cleonymidce. 



The principal divisions are the following : — 



* Prothorax brevissimus, transversus. 



-\ Mesothoracis parapsides scuto discretes. 



■\\ Mesothoracis parapsides scuto fere in unum confuses. 



J Antennce W-articidatcs. 



XX Antennce 12-articulatcs. 



XXX Antennce 13- articulates. 



X Antennce articulo 3°. vix conspicuo, 4°. minimo, 5°. parro. 



X x Antennce articulo 3°. et 4°. minimis, 5°. mediocri. 



** Prothorax productus, antice angustus. 



* Prothorax brevissimus, transversus. 

 j" Mesothoracis parapsides scuto discretes. 



C 13-articulatse I. Seladernia. 



Antennas < 12-articulatse. Thorax punctis ma- ( aspersus . . II. Semiotus. 

 ( joribus \ non aspersus. III. Systasis. 



Genus I. Seladerma/" 1 Walker. 



Fern. — Caput mediocre, thorace vix latius : mandibular elongato- 

 subquadratse, paullo arcuatae, tridentatse, similes ; dens externus 

 et medius acuminati ; internus latus, obtusus : maxillce elongata?, 

 subarcuatae, ciliatre, quqseue interne apicem versus in lobum 

 producta; palpi sat longi, 4-articulati, subfiliformes ; articulus 

 l us . mediocris; 2 US . paullo longior; 3 US . 1°. aequalis: 4 US . 2°. longior 

 fusiformis : men turn elongato-ovatum, basi emarginatum : labium 

 breve, latum, apice ciliatum ; palpi 3-articulati, breves ; articulus 

 l us . mediocris ; 2 US . brevis ; 3 US . 1°. paullo longior crassus acumi- 



" SeAas splendor, Sep/xa cutis. 



