LIST OP PUBLICATIONS. 
241 
Menge, a. Preussische Spinnen.' vii. Fortsotzung. Schr. Ges. Danz. 
(n.f.) iii. pp. 375-422, pis. Ixiv.-lxx. (Fortsetz. viii., containing 
pp. 423-454, and pis. Ixxi.-lxxv., was also issued in 1875, but is not 
included. in this Record). 
This part continues the work [c/. Zool. Rec. x. p. 198], bringing the 
family Drassides to a conclusion, and containing several genera of the 
family Thomisides, 24 species are described, of which 6 are new. 
Neuman, 0. F. Gottlands och Glands Spindlar och Vattenqvalster. 
Ofv. Ak. Forh. 1875, No. 2, pp. 91-104. 
A classified list, with localities, of 107 species of Arachnida and 29 of 
Acaridea found in Gothland and Oeland. The author refers to an 
illustrated monograph of the Swedish species (50) oi Hydrachnoidm^ upon 
which he is engaged, and in anticipation of which he describes a new 
genus and some new species. A var. n. metallica of Hydrodoma umbrata^ 
Koch, is described from Gothland, p. 104. 
Packard, Jr., A. S. Development of the Mites— False Scorpions — Scor- 
pions, etc. (Pedipalps)— Spider ; in Life Histories of the Crustacea 
and Insects. Am. Nat. ix. pp. 610-615, figs. 265-270. 
The author, under the head of Acaridea^ pp. 610-611, sums up in 
respect t5 the “ Development of the Mites ” as follows certain mites 
pass through, first, a iHforw/a-state, in which the yelk only partially 
divides ; secondly, sometimes one or two embryonal stages (deutovum 
and tritovum)\ thirdly, a six-legged larval state; fourthly, an eight- 
legged pupal state ; and fifthly, the adult stage. On the “ Development 
of the False Scorpions,’’ pp. 612 & 613, the conclusion is that they pass 
through, first, a iforw/a-stage ; Secondly, a first larval state, when they are 
hatched with only one pair of appendages (maxillae) ; and thirdly, a 
second larval state with all the limbs present but enveloped in a larval 
skin ; in the fourth, the larval skin is thrown off, the limbs are free, and 
the animal is in the adult form. In regard to the development of the 
Scorpionidea, &c. (Pedipalpi), pp. 613 & 614, Metschnikoff’s “ Embryo- 
iogie des Scorpions,” 1870, is in the main followed. The chief events are 
partial segmentation of the yelk, thd embryo developing within the ovi- 
duct, and the production of the young in a form exactly like that of the 
adult— about half an inch long — a dozen or so being produced in the 
season. In respect to the Araneidea, pp. 614 & 615 (following Clapa- 
rede), the conclusion is that all spiders, so far as known, first undergo, in 
the egg state, a partial segmentation of the yelk, and, secondly, are 
hatched in the form of the adult, and undergo no metamorphosis. 
Pavesi, Pietro. Note araneologiche. Atti Soc. Ital.xviii. pp. 113-132, 
254-304. 
This paper contains, (1) A catalogue of the spiders of Capri, 85 
in number, pp. 1-18, with 4 species described as new. (2) An ad- 
ditional list of 23 species from Pavia (cf. op. cit. xvi. p. 68). (3) A 
general catalogue of the spiders of Switzerland, with additions and cor- 
rections referring to that of the Canton Ticino, and recording 285 
species, of .which 3 are recorded as new. (4) A list of 18 species 
1875. [voL. XII.] R 
