l^Q [January, 
A.— Ocelli absent. {ATBOPINA). 
The speciea of this group are usually inquilines ; that is to say, 
they live a more or less concealed life, usually in houses or stores. The 
antennae are multi-articulate, with all the joints rather short. The 
wings absent or rudimentary ; the posterior pair wanting, the anterior 
pair when present usually represented by coriaceous scales, or sometimes 
membranous. The body soft. Comparatively little is yet known of 
their exact habits, and the described species are not numerous. 
The genera may be tabulated thus — 
A. Meso- and meta-thorax united ; wings absent; femora strongly dilated... j4iro2>os 
B. Meso- and meta-thorax free ; femora only slightly dilated 
a. Wings represented by coriaceous scales Clothilla, 
b. Wings membranous Psoquilla 
Genus Ateopos, Leach (1815). 
Termes p. Linn. ; Hemerohius p. Fab. ; Psocus p. Latr. ; Troctes Burm. 
Tarsi 3-jointed ; femora strongly dilated, the intermediate pair less 
so than the others. Head oval ; eyes small. Antennae 17-articuIate, 
the two basal joiats stout, the rest thin. Pro-thorax forming a narrow 
transverse collar. Meso- and meta-thorax united into one large piece. 
Abdomen ovate. Wings absent. 
1. — Ateopos divinatobia, Miiller. 
Termes divinatoria, MiiU. Prodr. p. 184, 2179 (177G). Hemerohim 
pulsatorius, Pab. Syst. Ent. p. 311, 13, nee Termes pulsatorium, Linn. ; 
Afropos pulsatoria, auctorum. Troctes pulsatorius, Burm. Handb. 2, 
p. 773, 1. Termes fatidicum, Linn. Paun. Suec. p. 475, 1938. ? 
Greyish-white. Head slightly testaceous. Eyes black. Nasus and abdomen 
with a few scattered bristle-like hairs. (" S with an oblong lobe at the apex of the 
abdomen beneath, on each side of which is a slender hook, acute and turned inwards 
at the tip ; $ with a large oval egg-valve covering the apex of the abdomen 
beneath." Nitzsch, as quoted by Burmeister and Hagen.) The creatures vary from 
almost colourless to a decided grey, with the head more or less yellowish or 
testaceous. Length of body ^"'. 
Exceedingly abundant in books and papers, and in neglected boxes 
and collections of insects, &c. ; commits great ravages on dry insects 
set in the English fashion on short pins ; commonly known as the 
"book-louse," or, in German, " stauh-laus'' (dust-louse). 
It is with great reluctance that I do not apply to this insect the name 
'^pulsatoria,'" under which it has been so long and familiarly known; 
but it appears conclusive that the true Termes pulsatorium of Linne is 
