TERMITES FROM THE AUSTRALIAN REGION. 
varietal names. A similar course might have been adopted in 
dealing with certain of the North Australian forms, but in the latter, 
in the absence of alate imagos, there is nothing in the material at 
present available for study to suggest specific relationship between 
the specimens proposed as new, ami for this reason they have been 
given specific rank. 
M . Imiejielin.i Silv. was described from soldiers and workers only 
from M undaring, South-west Australia. Professor Silvestri has 
kindly compared examples of these castes from the type locality 
with the type series and these in turn hav^e been compared wdth 
other series (also from the type locality) conpirising alate imagos, 
one of which has been selected and described below as the typical 
form invariably associated with soldiers of the variety or race 
described by Silvestri. 
Imago. 
Colour. Head, posterior margin of thoracic nota and base of 
veins very dark brown ; postclypeus and remainder of thoracic 
nota Dresden to mummy bromi ; labrum pale orange yellow ; 
antennae and ])leural sclerites mummy brown ; legs Dresden brown 
more or less darkly suffusetl v/ith mummy brown ; wings dark 
fuscous with slight iridescence in some lights. 
Head (Fig. 105). -Pather small, hemispherical behind the eyes, 
very setaceous. Postclypeus strongly convex, hemispherical behind, 
truncate in front, about half as long as Avide, with distinct meflian 
suture ; anteclypeus short, slightly produced in the middle. Labruni 
wide at the base, widest at the posterior third, broadly rounded in 
front. Fontanelle elongate, obscurely forked anteriorly. Eyes large 
(0‘238 X 0‘255) and prominent, separated from the lower margin of 
the head by a space equal to the short diameter of ocelli. Ocelli 
large (0-068 X 0-102), about half their short diameter from the eyes. 
Mandibles (Fig. 106) with the apical tooth not markedly longer than 
the following one. Antennae (Fig. 107) 15-jointed ; 1st joint large, 
about twice as long and one-fifth wider than 2nd ; 3rd very small ; 
4th markedly larger than 3rd ; 5th smaller than 4th but larger than 
3rd ; 6th to 14th increasing in length progressively ; 15th about as 
long as 1st, pointed at the apex. 
Thorax (Fig. 108).--Pronotum very setaceous, a little narrower 
than head, concave in front, extreme anterior margin elevated, 
anterolateral angles rounded to the broad posterior margm, which 
is markedly sinuate ; posterior margin of meso- and metanotum 
deeply emarginate. 
Wings (Figs. 202, 203). — Large, costal margin pale yellow in 
alcohol specimens ; radius markedly setaceous ; radial sector 
setaceous throughout, suffused with dark brown posteriorly ; media 
running through the anterior third of wing, generally simple but 
