HYMENOPTERA. 589 



which resides in the card-nests of one of the wasps of South America, and which Reaumur considers as the 

 female of this wasp. 



Dirhhms, Dalni., has the head deeply bifid and prolonged in front, as well as the mandibles. [D. excavaiiis, 

 Dalm., an African species.] 



Palmon, Dalm., composed of species found in copal, has the antennae terminated by three thick joints, and the 

 ovipositor exserted. 



Leitcospis, Fab., has the abdomen applied against the hind part of the thorax, rounded behind, with the ovi- 

 positor curved over the back. The female of L. dorsigera places its egg-s in the nests of Mason Bees ; that of L. 

 gigas oviposits in Wasps' nests. 



The others have the antennas mostly only from 5- to 9-jointe(l, with the hind thighs oblong, and the tibia; 

 straight. 



Eucharis, Latr., with straight 12-jointed antennae, and, according to Latreille, without any vestige of palpi. 



Thoracantha, Latr., Brazilian insects, with the scutellura extended over the abdomen. 



The remainder have the antenna; at least 9-jointed, simple, and elbowed, and scutellum small. 



Of those which have the antennas not inserted close to the mouth, some have the abdomen nearly ovoid, com- 

 pressed at the sides, and the ovipositor mostly exserted. 



Agaon, Dalm., has the head very large and flat, and the basal joint triangular. [A. paracloxum, Dalm., from 

 Sierra Leone, closely allied to the insect which is used in caprification.] 



Eurytoma, Illig., has the male antennae nodose and verticillated, and the ovipositor short. [Numerous small 

 British species. 



Miscocampus, Latr. [Torymus, Dalm., or more properly Callimome, Spinola], has the antennae not verticillated, 

 and the ovipositor long. One species is parasitic upon the Cynips of the Rose bedeguar, [a very numerous British 

 genus] . 



The others have the abdomen flat above, triangular and pointed in the females, or subcordate or suborbicular. 

 The ovipositor is mostly concealed. 



In some of these, the stigraal branch arises at a distance from the union of the costal nerve with the costa of the 

 fore wings. 



Perilampus, Latr., has the abdomen short and cordate, and not prolonged, with the scutellum thick and promi- 

 nent. [Several British species.] 



Pteromalus, Latr., has the thorax short, with the collar not narrowed in front, and the abdomen of the females 

 terminated in a conical point. [A very numerous genus.] 



Clevnymus, Latr., has the collar elongated and narrowed in front ; the abdomen is also much longer. [C. de- 

 pressus, Latr., a rare British species, &c.] 



In others, the stigmal branch arises from the union of the costal nerve with the costa ; the middle legs are longest, 

 with a long spur at the apex of the tibiae. 



Eupelmus, Dalm. [has the ovipositor exserted], and the basal joint of the middle tarsi broad and ciliated, and 

 the stigmal branch removed from the costal nerve. 



Encyrtus, Latr., has the stigmal branch arising from the apex of the costal nerve; the club of the antennae is 

 compressed and truncate. [A very numerous genus, of minute species.] 



Spalangia, Latr., differs from all the preceding in having the antennae inserted quite close to the mouth. 



Eidophus, Geof. (Entedon, Dalm.), has the antennae from 4- to 8-jointed, those of [some] males being branched. 

 [A very extensive genus.] 



[This family, Chalcidida, has recently received much attention, and a great number of additional 

 genera have been established, especially by Spinola, Dalman, Walker, Esenbeck, Ilaliday, and my- 

 self. Those found in this country are described in the generic synopsis of my " Modern Classili- 

 cation,"] 



The fifth tribe, Oxyuri, resembles the preceding in the absence of nerves in the lower wings, but 



the abdomen of the females is terminated by a tubular ovipositor of a conical form, and either internal, 



exsertile from the anus like a sting, or external, and forming a kind of tail or terminal point. The 



antennae are from 10- to 15-jointed, and either filiform or rather thickened to the tips, or clavate in 



the females. The maxillary palpi in many are long and pendent. We reunite the different genera of 



which it is composed to that of 



Bethylus, Latr. & Fabr. 



Their habits are probably the same as those of the Chalcidites, but as the majority of these insects 

 are found upon the ground or low plants, I conjecture that their larva; live in the earth. 



Some have the wings furnished with veins and cells, and a portion of these have the antenna; inserted near the 

 mouth. 



Dryimis, Latr. (Gonatopus, Klug), has the antennae straight, 10-jointed, in both sexes ; the thorax binodose, and 

 the fore tarsi terminated [in the females only] by two large reflexed hooks. Some females are apterous. [See the 

 monographs of Esenbeck and Walker.] 



Anteon, Jur., has only 10-jointed anteiinae, at least in the males, but the thorax is continuous, and the tarsi are 

 terminated [in the males only] by ordinary-sized claws. 



