278 
atis, angulis obtusis ; elytris subnitidis crebre subtilius 
minus gequaliter punctulatis, leviter minus aequaliter 
geminato-striatis ; tibiis anticis extus tridentatis. Long., 
8 1. ; lat., 4 1. 
This species certainly ought not to be separated generi- 
cally from S. brunneus, Shp., of wliich I possess an example 
agreeing perfectly with Dr. Sharp's description, and taken in 
N.W. Australia (the original locality). Nevertheless, it dif- 
fers from *S'. hrunneus in respect of a character that Dr. Sharp 
regards as generic in having its clypeus separated from the 
frons by an ordinary suture, not a raised line. Also, it de- 
parts somewhat in the structure of the labrum, which is inter- 
mediate between that of S. hrunutus and Chilodiphcs (also in 
my collection), the front portion of that organ being evidently 
thickened or /ur/iid, though the organ is not distinctly bipar-' 
tite, as in OhUodiplus. Apart from these slight structural 
modifications the present species and *S'. brunneus are ex- 
tremely close, even specifically, the principal external differ- 
ences being in the darker head and elytra of the present in- 
sect, the shorter joints of its antennal flagellum, the opaque 
pronotum, the less depth of its elytral striae, its more niti^ 
and less pilose pygidium, its more densely pilose pronotum, 
the presence of three external teeth on its front tibiae (my ex- 
ample of S. bnoineus has only two, including the apical one), 
and the greater length of its ventral segments. I have no 
doubt that my S. brunneus and ,S'. bicolor are male and female 
respectively of two allied congeneric species. The joints of 
the flagellum of the antennae in brunneus are nearly four 
times as long as the preceding four joints together, in bicolor 
scarcely twice as long. Some of the distinctions between tne 
two that I have mentioned above are probably sexual, but 
those of the labrum, the opacity of the pronotum, and the 
striation of the elytra (it is hardly likely that the deeper 
sculpture would be in the male), together with much colour 
difference and widely separated locality, point to specific dis- 
tinctness. 
W. Australia : near Eucla. 
Enamillus. 
The following species must be referred to this genus ac- 
cording to the tabular statement of the characters of the Sys- 
tellopid genera furnished by Dr. Sharp (Ann. Mus. Gen., ix., 
p. 319), though it is not unlikely that had it been before Pr. 
Sharp he would have found a new generic name for it. Jt 
presents all the characters indicated for EnaniUlus in the 
tabulation, but differs from those set out in the subsequent 
