TERMITID2E PSOCID^. 
Ins . 261 
ally the work of Termites. A comparison is given with the results 
obtained by analyses made by other experimenters. 
S. E. Peal, according to observations made in Assam, is of opinion 
that the substance of which the inner cells of a termitarium is composed, 
consists of the excreted refuse of the wood on which they feed. Diagrams 
of sections of nests are given ; Nature, xxvi. p. 343. 
When the galleries of white ants are formed on the surface of glass, 
it is found that the surface is eroded as if by some powerful chemical 
action ; G. Bidie, Nature, xxvi. p. 549. 
Leidy’s memoir on the parasites of Termitidce is abstracted in Kosmos, 
xi. p. 50 [cf. Zool. Rec. xviii. Ins. p. 261]. 
Embiid;e. 
Embia solieri , Ramb., captured in the larval state under stones at 
Amelie-les-Bains ; H. Lucas, Bull. Soc. Eut. Fr. (6) ii. p. clxxxv. 
PsOCIJDjE. 
Berticau, P. Ueber einen. auffallenden Gesclilechts-dimorphismus bei 
Psociden, nebst Beschreibung einiger neuer Gattungen und Arten. 
Arch. f. Nat. xlix. pp. 97-101, pi. i. 
. Ueber den Gesclilechtsdimorphismus und die Speicheldriisen der 
Psociden. Verh. Ver. Rheinl. xxxix. pp. 127-133. 
Contains also synonymical corrections to his previous paper, and a 
list of 20 species found near Bonn. 
IIacjen, II. A. Beitrage zur Monographio dor Psocidon. S. E. Z. xliii. 
pp. 265-276 & 217-237 (under the title “ Ueber Psociden in Bern- 
stein”), 276-300 & 524-526 (Erkliirung der Tafeln), pis. i. & ii. 
(folded). [An editorial note at p. 265 explains how this error in 
sequence occurred.] 
An amplification of the species of Psocidce found in amber, described 
or noticed by the author in Berendt’s “ Organische Reste im Bernstein,” 
in 1845 (including Pictet’s species), with notices of much further materials 
(including new genera and species), from Kiinow’s collection. The pre- 
viously known species are redescribed in great detail. Some comparative 
tables follow, showing the gradual increase of materials observed. The 
memoir concludes with a lengthened critique of Kolbe’s recent Mono- 
graph, so far as regards certain views expressed by that author regarding 
the oldest forms of Psocidce in an evolutionary sense, the forms with 
abbreviated wings are considered examples of atavism, and there 
are also allusions to points of structure, some of which had previously 
appeared in the author’s paper in “ Psycho ” [c/. Zool. Rec. xxiii. Ins. 
pp. 261 & 262]. The plates are mostly occupied by details, and are not 
entirely confined to illustrations of amber species. On pi. i. are figured : — 
Psocus ajfinis (fig. 1), Ccvcilius proavus (fig. 2), G. pilosus (fig. 3), C. 
debilis (fig. 4), Epipsocus ciliatus (fig. 5), Amphientomum paradoxum 
(fig. 6), Elipsocus abnormis (fig. 7), Empheria reticulata (fig. 8), E. villosa 
