2 Arachn. 
XI. ARACHNIDA. 
discusses some matters relating to his theory of Arthropodan appendages. 
Epithelial secretions in the reproductive apparatus of Arachnidci are 
considered by Balbiani (3). In the Records of the Australian Musoum 
the Fauna of Funafuti is described and Rainbow (114) deals with the 
Arachnida , publishing descriptions of a number of now species principally 
of the genus Epeira. 
F. 0. Pickard Cambridge’s papers (17 & 18) on Cteniform spiders 
from various parts of the world merit special attention as also do the first 
few parts of his systematic account of the spiders of Central America in 
Biologia Centrali- Americana (18 a). 
Spiders from various parts of the world form the subject of many 
papers. 
Pocock (111) describes a collection from the Moluccas. Lenz (75) 
describes those from Greenland, Thorell from Burma (142), Pocock (109) 
the Mygalomorpkce from Africa. Pavesi gives an account of Arachnida 
from the Zambesi (90) and Somaliland (91). Pocock further describes 
the Ctenizidce of South and West Australia (103). 
Simon’s papers this year describe a vast- number of new species from 
various regions. Oriental Aranece (122 & 128), Neotropical (124, 132 & 
133) and Ethiopian (127) occupy several papers. He has also listed some 
Swiss Aranece (123) and published Part hi of “The Spiders of St Vincent” 
(130). Three other papers (125, 126 & 129) are composed of miscellaneous 
specific descriptions. 
Acari as usual form the subject of many papers. Trouessart describes 
the wine mites, Brandes (12) gives account of Argas rejlexus as a parasite 
of man, whilst Favette & Trouessart (35) have applied photography to 
tho study of Sarcoptidee. Michael (83) devoted his Presidential address 
to tho Royal Microscopical Society to a rdsumd of the Anatomy of Bdella. 
He also in another place criticises some views of the classification of the 
Oribatidce (82). Jourdain has two interesting memoirs in the “ Comptes 
Rendus,” viz. on the “ Pseudolarval copulation of Sarcoptidce ” (58) and on 
the “Development of Trombidium ” (59). Neumann continues his Revision 
of the Ixodidce (86) and Oudemans (88) his list of Dutch Acari. Other 
interesting memoirs on Acari comprise Michael’s on Polar Acari of tho 
Jackson- Harms worth Expedition (84), Canestrini’s on Acari from Burma 
and New Guinea (19 & 20), Kramer’s on the Trombididte of Madagascar 
(72) and lastly Call’s description of two new species from tho Mammoth 
Cave of Kentucky. 
The subdivision of Acari most studied would appear to be the Hydrach- 
nidee. Piersig, especially, devotes five papers to them, dealing princi- 
pally with those found in Germany (95-99). Pisarovic (102) on Bohemian, 
Daday on Platten Sea (31) and Kcenike (64) on E. African forms must 
also be mentioned. 
• It is a pleasure to see the smaller groups of Arachnids receiving more 
attention this year. To the literature of Scorpions Pocock (104, 106, 
107 & 112) and Kraepelin (66, 67 & 69) are the principal contributors, both 
dealing with E. African forms amongst others. 
Pedipalpi are discussed by Pocock (106) and by Lonnberg (76 & 77), 
whilst Pereyaslawzewa (92 & 93) publishes researches on their develop- 
ment. Hansen & Sorensen discuss the structure and relationships of the 
order Palpigradi (44). 
Pocock (105) & Kraepelin (68) also contribute the greater part of the 
literature on Opiliones. Daday (30) describes Pscudoscorpiones from New 
Guinea. 
Lastly, special attention must bo drawn to Mr Pocook’h paper on tho 
Tropical African Solifugce (108). As it contains a most interesting account 
of the habits of these animals it possesses an importance for other than 
System atists on this order. 
