464 Mr. R. Shelford’s Studies of the Blattide. 
the general size of the insect and the distance apart of 
the eyes is of considerable help in discriminating the 
species. In P. nivea, L., the eyes almost touch on the 
vertex of the head, and the male type has the following 
dimensions :—Total length 16 mm.; length of body 12 
mm.; length of tegmina 13°5 mm.; pronotum 3:°9 mm. x 
4-1 mm. The antennz are unicolorous, and the tegmina 
are immaculate. This is the commonest species of the 
genus, and will eventually be proved, I am sure, to have 
been described over and over again; it frequently finds its 
way to England, lurking in imported fruit, and has been 
recorded in the lists of Natural History societies as 
P. exoleta Burm, and as P. virescens Thunb. ‘The type is 
recorded from Surinam. 
11. Blatta oblongata, L., De Geer, op. cit. p. 541, pl. 44, 
fad. 
= Pseudomops oblongata, L. 
The specimen in De Geer’s cabinet is much mutilated, 
consisting of the head and the two thoracic segments only ; 
the tegmina also are missing. The head is piceous, 
with first and basal half of second joint of maxillary palpi 
flavo-testaceous, the rest of the palpi fuscous. Pronotum 
flavo-testaceous with a complex fusco-castaneous design 
on the disc. As already pointed out, this does not 
correspond with Linnzeus’ description “thorace punctis 
duobus lunulaque nigris” nor with De Geer’s figure and 
description. The species is most nearly allied to 
Pseudomops angusta, W1k. 
12. Blatta minutissima, De Geer, op. cit. p. 542, pl. 44, 
ff. 13, 14. 
= Holocompsa minutissima, De Geer. 
(? syn. Holocompsa cyanca, Burm.) 
One specimen in bad condition, the abdomen missing. 
Description of the type :— 
Head fuscous with a sparse rufous pubescence, clypeus and labrum 
testaceous; antenne (mutilated) fuscous. Pronotum fuscous with a 
recumbent rufous pubescence. Tegmina with basal half coriaceous, 
castaneous, apical half membranous, hyaline, marginal area with 
rufous pubescence 6 to 7 costal veins anal vein impressed and bent 
