ARANEIDEA. 
Araclin. 7 
J. H. Emerton, Bull. Ess. Inst. ix. p. 67, gives a short survey and 
description of the various Spiders’ webs ; referring to Argijroneta aqua- 
tica ; also to the Lycosidm^ Dictynidce, Linyqihia, Hyptiotes, Uloborus, and 
Epeiridce. 
Hansen, H. J. Sur les dessins d’Araneides Danoises donnees dans 
I’ouvrage illustr^ “ Zoologica Danica,” public par Schiodte. Ent. 
Tidjs. i. pp. 169 & 170. 
[Not seen by the Recorder.] 
Macleod, Jules. Notice sur I’appareil venimeux des Aran^ides. Arch. 
Biol. i. pp. 573-582, pi. xxiv. 
Describes and illustrates the poison glands, with reference to vafibus 
Spiders under the following heads; 1. General disposition and-*eize| 
2. Histiological structure ; 3. Excretory ducts ; with a summary of the 
conclusions arrived at. An abstract of results in Am. Nat. xv. p. 236. 
McCook, H. C. How orb-weaving Spiders make the frame-work or 
foundations of webs. P. Ac. Philad. 1881, pp. 430-435 [1881]. 
The author concludes, from many carefully detailed observations, that 
air-currents have a large part in placing the foundation lines of webs, 
but that this is not the only mode of laying them ; thus so far confirm- 
ing the conclusions (quoted by the author), come to by the Recorder in 
“ Spiders of Dorset,” i, p. xxi. [modified, however, 1. c. p. 586, which the 
author had not then seen]. 
. The Snare of the Ray Spider {Epeira radiosa) ; a new form of 
Orb-Web. L. c. pp. 163-175, woodcuts. 
The snare described is of an irregular geometric, or wheel-shape, 
drawn up in the middle so as to form a hollow cone or funnel-shaped 
dome. The spiral lines are studded with viscid globules, as in the webs 
of other Epeirids. This snare is worked both in the ordinary way, and 
also in the way described by Dr. Wilder as peculiar to Ilyptiotes cavata, 
Hentz., that is, by the sudden loosening of the slack portion (gathered 
up by the spider), of a main lino bearing upon the snare. This opera- 
tion, in both cases, no doubt tending to confuse and to entangle .the 
spider’s prey. These modes of working (in respect both to Epeira 
radiosa, and Ilyptiotes cavata), are fully described, and illustrated by 
figures. 
Sabatier, A. Formation du blastoderme chez les Araneides. C. R. xcii. 
pp. 200-202. [C/. Ann. N. H. (5) vii. p. 277.] 
The ova observed 'w ere those of Pholcus opilinnoides, Epeira diadema, 
E. fasciata, Agelena labyrinthica, Latrodectus malmignatha, &c. The 
result of the author’s observations is that the egg of the Spider presents 
a type intermediate between the general superficial segmentation of the 
Crustacea (e.g., Peneus), and the regular discoidal segmentation in certain 
fishes, — the “ blastulation ” being intermediate between “ periblastula- 
tion ” and “ discoblastulation.” It very closely approaches the eggs of 
Chelifers (as described by Metschnikoff), Tetr any elms (according to 
Claparede), and Insecta (Bobretzky), and therefore proves in a marked 
