ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 479 



Onychophora, as we know it to-day, is tke restriction of all the species to 

 tke region soutk of tke Tropic of Cancer, and of tke great majority of 

 tkern to tke sontkern hemisphere ; only in tke "West Indies and in 

 Central America do we find an appreciable number nortk of tke equator. 

 Anotker very striking feature is tke geograpkical distinctness of tke 

 systematic units. Nowhere, so far as we know, do species of tke Peri- 

 patidaj and of tke Peripatopsidas occur together. Tke two sub-families 

 of tke Peripatida3 are separated by tke entire breadtk of tke Indian 

 Ocean. 



Tkere is a suggestion of zonal distribution, tke Peripatidse being 

 equatorial (tke Malay Peninsula and Sumatra, Central Africa and 

 tropical Soutk and Central America), tke Peripatsopsinaj intermediate 

 (New Britain, New Guinea and Ceram, Natal, and tke adjacent portions 

 of Cape Colony), and tke Peripatoidinas austral (Australia, Tasmania 

 and New Zealand, Natal and tke Cape Colony, and Ckile). 



5. Arachnida. 



Scottish Spiders.* — A. Randell Jackson makes a second contribu- 

 tion to our knowledge of the spiders of Scotland. In a fortnight's 

 holiday he collected 139 species, of which seven were previously 

 unrecorded for Scotland and two were also new to Britain. He has 

 special notes on Mkryplumtes nigripes Simon (hitherto known from 

 French and Swiss Alps at high altitudes), Dismodicus elevatus C. L. K., 

 and Trochosa biunguicuJala Camb. A description is given of Glubiona 

 litnnida sp. n. from moss in swampy localities in the Delamere forest. 



Genus Lebertia.f — W. Williamson and C. D. Soar discuss this genus 

 of Hydracarina, and describe the (eleven) British species. Two sub- 

 genera, Lebertia (Sig. Thor's Xeolebertia) and Pilolebertia form a smooth- 

 skinned group ; three sub-genera, Mixolebertia, PseudoUbertia and Hexa- 

 lebertia, form a second group in which the skin is not dotted over with 

 fine pores, or has them indistinctly visible. But a more distinctive feature 

 is the presence of papilla? or of ridges varying in length. Species which 

 are apparently smooth-skinned, but belong to this group, may be 

 distinguished from the preceding group by the presence of six long 

 bristles on the third segment of the palpi instead of five. As a rule, 

 swimming hairs are either quite rudimentary or absent. 



New Acarina.J — Antonio Berlese continues to make notable addi- 

 tions to our knowledge of Acarina. He revises the genus Oribates, 

 which he divides into two sub-genera, Oribates s. str. and Neoribates 

 sub-gen. n. To both he has new species to add. Among Mesostigmata 

 he establishes the new genera Eutracliytes, Hoploseius, Ologamasellus, 

 Coleolselaps, Amblyseius, and Cercomegistus. Among Prostigmata, the 

 new sub-genus Eupodolophus is established. 



* Proc. R. Phys. Soc. Edinburgh, xix. (1915) pp. 177-90 (1 pi.), 

 t Journ. Quekett Micr. Club, xii. (1915) pp. 479-514 (2 pis.). 

 X Redia, x. (1915) pp. 113-50 (4 pis.). 



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