62 Ins. 
INSECTA. 
(354). — Embryology of Platygaster intricator , Kulagin (4G0) ; of Melo'd 
proscarabceus y Nusbaum (573). — Of Muscidce , Calliphora , and Lucilia , 
Graber (321) : the subjects discussed are, differentiation of the blasto- 
derm ; formation of the layer of the intestinal glands ; median and 
lateral gastrulation, ptychoblast ; the commencements of the proctodreum 
and of the stomodaeum ; the formation of the mesenteron, and the rudi- 
ments of the intestinal glands ; comparison of the rudiments of the intes- 
tinal glands of Muscidce with those of other insects ; the development of 
the central nervous , system ; the embryonal rudiments of the imaginal 
discs. — Embryology of Chalicodoma muraria , Carriere (120, 121) ; of 
Blatta genmnica , Cholodkovsky (131). — Development of head of 
Phyllodromia germanica , Lameere (4G9). — Formation of the dorsal parts 
in Meloe , Nusbaum (573). — Development of mesenteric cavity, Schimke- 
WITSCII (734). — Development of the sexual organs and alimentary canal 
in Chironomus , Ritter (702). — ■ Early stage of Notonecta glauca , P^da- 
schenco (598). — Development of nervous system of Mantis , Viallanes 
( 8G7). — A praeoral process in Xiphidium ensiferum , Wheeler (912). — 
Xiphidium ensiferum , embryological note, W heeler (913). — Origin of the 
sexual gland of £ Phyllodromia , Heymons (368). 
“Gum-glands” of Calliphora , Mayer (517). 
Electricity and parthenogenetic eggs, Verson (865). — Development of 
unfertilised eggs of silkworm, Verson (866). 
Structure and movements of spermatozoa of Coleoptera, Ballowitz 
( 24). — Spermatogenesis in Locustulce , Sabatier (717). 
Viviparous Caddis-fly, Wood-Mason (926). — Polyandry in a wasp, Ent. 
Am. vi, p. 33. 
Intermediate forms between females and workers in ants, Wasmann 
(882). 
Hermaphroditism : Heymons (368) ; in ancestral insects, Heymons 
( 368). — Hermaphrodites of Myrmica , Wasmann (881) ; of Catocala cara, 
Krebs, Soc. Ent. v, p. 25 ; of Trichiura cratcegi } Jackson, Ent. xxiii, 
p. 345 ; of Spilogaster duplicata , Sciinabl (743) ; of Hydrotcea meteorica , 
Stein (836). 
7. General Biology and Stray Notes. 
Insects in mines, Lampa ( MlP).—Lepidoptera in a cavern, Demaison, 
Bull. Soc. Ent. Fr. 1890, p. xov.— Insects on snow, Thomas, Ent. Nachr. 
xvi, p. 308. — Insects at light, Ent. xxiii, pp. 61, et passim. — Dytiscus 
rnarginalis in gas-water, Hall, Ent. M. M. (2) i, p. 110. 
Resistance of insects to the effects of submersion in water, Plateau 
(609) ; Schwarz (750). 
Long pupal periods in Lepicloptera , Rowley, Canad. Ent. xxii, p. 123. 
Occasional abundance of Lepidoptera in New Zealand, Smith, Ent. 
xxiii, pp. 305 & 307. 
Myrmecophilous and Termitophilous insects, Wasmann (880). — Ants’ 
nest beetles, Wasmann (883, 884). — Myrmecophilous Coleoptera in N. 
America, Schwarz (752). 
