147 



tiefer gelegenen Kernen gehörenden Zellen scheinen — wenn ich den 

 Vergleich beibehalten will — die Rolle der Stützzellen zu haben. 



Ich hoffe nächstens über den Bau dieser Organe in anderen Fa- 

 milien Näheres berichten zu können. 



III. Mittheilungen aus Museen, Instituten etc. 



1. Linnean Society of London. 



18th February. — Mr. A. D. Michael read a paper »On two new 

 Acari of the genus Glyciphagus discovered in moles-nests, viz. G. platygaster, 

 and G. dispar.^^ The creatures have a large fiattish abdomen bordered by sin- 

 gular rough projections and large spines. The most remarkable point is that 

 in one species, G. platygaster, the male, although somewhat different from 

 the female is not more so than is usual in the genus, and would be known 

 directly as the male of the same species, while in the other species G. dis- 

 par, the female of which closely resembles that of G. platygaster, the male is 

 totally unlike both its own female and the male of G. platygaster. The size, 

 form, and arrangement of the legs are quite dissimilar, and the projections 

 and spines absent. G. dispar is also interesting as afifording a clear proof, 

 if that were still needed, of the retro-anal position of the bursa copulatrix 

 and of its being the posterior median projection characteristic of the females 

 of the genus. This bursa communicates by a long, fine sperm- duct, with a 

 large receptaculum seminalis, and this again by two short wide ducts with 

 the ovaries, and long contorted oviducts. The articulation of the hind tarsi 

 in the male of G. platygaster is modified to give great play to the joint for 

 clasping purposes. Mr. Michael speculates upon what can possibly have been 

 the cause of the similarity of the male and female in the one case and their 

 very great difi'erence in the other closely allied species both being found 

 together in the same places, and apparently under precisely the same con- 

 ditions. Examples of the (J' and Ç of each species and of G. dispar in 

 coitu were shown, under the microscope. — J. Murie. 



2. Linnean Society of New South Wales. 



30th December 1885. 1) Descriptions of Australian Micro-Lepidoptera. 

 By E. Meyrick, B.A., F.E.S. In this, the thirteenth of Mr. Meyrick's 

 papers on the Micro-Lepidoptera of Australia, the descriptions of the Oeco- 

 phoridce are continued. One hundred and twenty species are described, and 

 12 new genera named as follows: — Haplodyta, Machœritis, Aochleta, Semi- 

 cosma, Leptocroca, Lathicrossa, Thamnosara, Gymnohathra, Crenmogenes, 

 Crossophora, Ochlogenes, Dissella, Macrobathra, and Satrapia. There is also 

 an appendix containing some species of genera mentioned in former papers, 

 which have lately come to hand. — 2) Remarks on Australian Ptinidae, and 

 Descriptions of New Genera and Species. By A. Sydney Olliff, F.E.S., 

 Assistant Zoologist Australian Museum. This paper treats of Ptinidae be- 

 longing to the typical sub-family in which the antennae are inserted in front 

 of the head. Six new species of Ptinus and one of Diplocotes are described. 

 The genera Diphobia and Enasiba are established for the reception of two re- 

 markable forms allied to Diplocotes, from South and West Australia. — 



