288 MONOGRAPIIIA 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 pa? apsides and the scutum of the 

 mesothorax indistinct. The first and last divisions depart 

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

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



The principal divisions are the following : — 



* Prothorax brevissimus, transversus. 



■\ Mesothoracis parapsides scuto discretce. 



+ 1 Mesothoracis parapsides scuto fere in umim confusce. 



^ Antennce W-articulatce . 



j;J Antennce 12-articulatce. 



+++ Antennce IS-articulatce. 



X Antennce articulo 3°. vix conspicuo, 4". minima, 5°. parvo. 



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



** Prothorax productus, antice ancjustus. 



* Prothorax brevissimus, transversus. 

 ^ Mesothoracis parapsides scuto discretce. 



-articulatae I. Seladernia. 



Antennae ^ 12-articulatae. Thorax punctis ma- ( aspersus . .II. Semiotus. 

 ( lion aspci-sus. III. Systasis. 



Genus I. Seladerma,^ Watter. 



^ 12-i 



Pem. — Caput mediocre, thorace vix latius : mandibuloe elongato- 

 subquadratse, paullo arcuatse, tridentatae, similes ; dens externus 

 et medius acuminati ; internus latus, obtusus : maxillaj elongatae, 

 subarcuatae, ciliatse, quqgeue interne apicem versus in lobum 

 produeta ; palpi sat longi, 4-articulati, subfiliformes ; articuhis 

 1"^. mediocris ; 2"*. paullo longior; 3"^ 1". aequalis: 4"^. 2°. longior 

 fusiformis: mentum elongato-ovatura, basi emarginatum : labium 

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

 1"**. mediocris ; 2*^^ brevis ; 3"^ 1". paullo longior crassus acumi- 



' SeAas splendor, hep^a cutis. 



