164 Mr. J. O. Westwood’s Monograph upon the 
XXXII. Monograph upon the Hymenoptcrous Genus 
Scleroderma. By J. O. Westwood, F.L. S. 
[Read December 5, 1836.] 
It is in the works of Latreille alone that we find any notice of the 
existence of the genus Scleroderma. In the fourth volume of the 
Genera Crustaceorum et Insectorum (page 119), we find an insect 
mentioned in the family Mutillarice, under the name of Sclcroder- 
mus domesticus, and formed into a section of the genus Methoca, 
having the thorax (truncus) “ elongato-cubicus, supra planus.” 
In the Regne Animal, the genus Scleroderma is placed between 
Myrmecodes and Methoca, and described as not differing from the 
former “ que par les palpes allonges et les antennes dont le 
second article est decouvert.” As far as I am aware, no further 
description either generic or specific has ever been published; 
and, judging from an inquiry addressed by M. Guerin to the 
Entomological Society of France, it would seem that the French 
entomologists are entirely ignorant of it. Having examined a 
number of individuals belonging to this genus contained in the 
Royal Museum of Berlin, and being in possession of others 
communicated by various friends, I have thought that a descrip- 
tion of the genus and its various species, accompanied by a few 
observations upon its affinities, may not be considered uninterest- 
ing from the curious characters of the group. 
Scleroderma, Klug. MSS. Sclerodermus, Latreille olim. 
Charaeteres generis ex individuis apteris, seu fcemineis, de- 
sumpti. 
Caput magnum, horizontal, quadratum seu oblongum ; an- 
gulis posticis plus minusve rotundatis ; depression aut 
subdepressum. Oculi parvi subovales, immersi, ad angulos 
anticos capitis locati. Ocelli nulli. Antennae in medio mar- 
ginis antici capitis inserti, supra os, capite vix longiores, 
10-articulatae ; scapo elongato, reverso-conico ; pedicello 
brevi, obconico, flagello articulis contiguis ; latitudine lon- 
gitudinem aequante, ultimo obtuso. Os ad marginem anticum 
paginae inferioris capitis location, incisione lunari, inter angulos 
anticos capitis ducta et ad quartam partem hujus paginae vix 
attingente. Mandibulce sat magnae elongalo-triangulares, 
incisione pone apicem, dentibusque duobus aut tribus parvis 
versus apicem marginis interni, dorso setoso. Maxillae et 
Labium, ore clauso, omnino occulta. Maxillae lobis duobus 
arete connexis, membranaceis, ciliatis. Palpi maxillares 
maxilla baud longiores 5-articulati, articulis longitudine 
