156 OrpER—HYMENOPTERA. 
Famity—PROCTOTRUPID (Steph.), OXYURA (Latr.) 
Sus-Famity—BETHYLLIDES (Haliday), GONATOPIDES, pars (Westw.) 
The three plates, XXIX, XXX, and XXXI, are devoted to the illustration of a very rare and curious 
group of Hymenoptera whose relations with other families are very peculiar. In many respects they approach 
nearly to the typical Aculeata, especially to the Mutillide, in the apterous condition of the females, certain of 
which closely resemble the females of Methoca; whilst others resemble some of the smaller Fossores allied 
to Psen, &e. Their 13-jointed antenne in both sexes, however, at once distinguish them and remove them to 
the great aberrant section of the Hymenoptera. Here they are related, on the one hand, to those genera of 
Proctotrupide, in which the fore wings have most of the apical veins in an undeveloped condition, although their 
situation is indicated by certain narrow markings on the wings destitute of the fine set with which the other 
parts of the wings are clothed. Some of the species, especially those of the Genus Mesitius, are closely allied 
to the Chrysidide (which have also 13-jointed antenne in both sexes, and partially obsolete veins in the fore 
wings); but Chrysis has only 5-jointed maxillary palpi, and the ovipositor is differently constructed. The 
Genus Bethylus Latr. (Omalus Jur.) has been restricted to the flat-headed species, which have the hind basal cell 
of the fore wings shorter than the front one, and which have 12-jointed antenne ; whereas in the species before 
us those organs are uniformly 18-jointed in both sexes. It is possible that some of the smaller continental 
species of Epyris may have been described by Dr. Klug in his Monograph on Bethylus, in which seven species 
of the genus are described, in Weber and Mohr’s Archiv. (vol. ii. p. 187—). In his generic characters, however, 
he describes and figures the maxillary palpi as 6-jointed, and the labial as 4-jointed; and he states that his 
species agree in their general characters with Ziphia villosa (S. Piez. 235), and Bethylus villosus (S. Piez. 236). 
The late lamented A. H. Haliday was engaged upon a Memoir on the European Species of the Group, 
whilst I was occupied, in conjunction with him, chiefly upon the extra species. My illustrations are therefore 
confined to the extra-European species (with the exception of our British species, including Pristocera depressa), 
and the species of Mesitius. It is to be hoped that his valuable materials will not be lost to science. 
The species are for the most part of small size, although the size of many of them considerably exceeds 
that of the great mass of the Proctotrupide, some of which indeed are the most minute of insects. 
Genus—CALYOZA. 
(Westw. Trans. Ent. Soc. Lond. vol. ii. p. 56.) 
Corpus elongatum subdepressum; caput magnum subeonvexum, oculi ante medium capitis lateraliter positi: 
ocelli postici; antenne in utroque sexu 13-articulate, articulis secundo et tertio minutis, 4-12 in mare ramum 
longum emittentibus, in foemina (fig. 2@) simplicibus cylindricis; mandibule elongate; in mare apice lato 
oblique truncato (fig. 12) dente magno apicali, alterisque tribus parvis obtusis, in fcemina (figs. 24, 2¢, e latere 
visa) magis irregulariter dentatis, dente interno obtuso subtus setis rigidis armato, dente medio apicali magno, 
trigono, alteris externis parvis obtusis; maxille (fig. 14, mas) parve, apice lobis tribus planis membranaceis 
ciliatis; palpi maxillares modice elongati 6-articulati, articulis 1 et 2 brevibus, reliquis 4 longioribus fere 
equalibus at sensim tenuioribus ; mentum (fig. 1c, mas; 2d, feemina) subobovatum ; palpis labialibus brevibus 
3-articulatis ; collare magnum subtrigonum antice rotundatum ; metathorax longitudinaliter suleatum et trans- 
verse striolatum; ale antic tantum cellulis duabus basalibus, stigmate magno, cellulaque unica marginali 
incompleta instruct, ungues tarsorum acuti basi lati denteque medio armati (fig. 2 e). 
This genus was proposed by me for a male insect preserved in gum anime in the Collection of Mr. Strong, 
of Long Acre, London. Its characters were consequently not satisfactorily examined. I have recently obtained 
a male insect from Port Natal, collected by Herr Gueinzius, which I have no hesitation in giving as identical 
with the Copal individual, and the British Museum Collection possesses a female which I am equally convinced 
is the other sex of the same species. 
