C. SKOTTSBERG 



Chilopoda. 



+ Nesogeoph/l!is lathollis (Attems) Schubart (Geophilus, Verb.). Endemic. The 

 CTenus, which has not been reported from S. America, includes after the latest revi- 

 sion by Attems (as subgenus of Geophilus] 1 1 species (i S.W. Austral., i N. Zeal., 

 I N. Caled., i Annam, 3 Jap. and 2 Eur.). 



■\- NesogeopJiiliis baeckstroemi (Verb.) Schubart (Geophilus, Verb.). Endemic. 



Scliizotenia alacer (Pocock) Silvestri. Chile, south to Fuegia, Argentina. A 

 genus of 6 species (3 Chile and Argent, to Patag., Fueg., i PI Austral., i N. Zeal., 

 I Chatham Is.). 



LithobiomorpJia africana Porat (Lamyctes insignis Pocock, insignis baeckstroemi 

 Verb.). Widely distributed over Africa; also Tristan da Cunha, St. Paul's L, 

 S.W. Australia and Hawaii. The genus very wide-ranging [N. Amer., W^ Ind., 

 S. Amer. (also Chile), Afr., p:. Ind., Austral., Tasm., N. Zeal., Chatham Is., N. 

 Caled., Kermadec Is., Guam, Hawaii]. 



If we exclude the 4 species regarded, rightly I presume, as introduced with 

 the human trafiic, 5 species remain, 3 of these endemic in Juan Fernandez. This 

 is indeed a very small number, but in spite of being so few, they tell a story of 

 an austral-circumpolar, presumably Antarcto-tertiary element. 



Collembola. 



Of the 8 species distinguished by SCHOTT {216), the first ever collected in 

 Juan Fernandez, 2 inhabit Chile, 3 are known from various parts of the world 

 and 3 endemic. As long as so little is known about the distribution of this group 

 it does not lend itself to zoogeographical speculations. The occurrence of widely 

 dispersed boreal species in S. America and other parts of the south hemisphere 

 (Australia, New Zealand etc.) is noteworthy, but whether their wide range is due 

 to the great age of Collembola or a result of later dispersal is unknown. 



Thysanura (222, 2gi). 



■\- Isolepisma amteciens Silvestri. ^ — Mt, Mf. The specific epithet refers to the 

 intermediate position between holepisiua and Hcterolepisnia\ the species is com- 

 pared with forms known from Africa and Australia. 



+ + Kuschelochilis Ochagaviae Wygodz. — Mt. A monotypical endemic genus 

 related to Allomachilis and Nesomachilis from Australia, but not, as far as known, 

 to an American genus. 



Among the Invertebrates treated above the endemic leech offers great in- 

 terest. Of Arachnoidea the Pseudoscorpionidea include a remarkable Antarcto- 

 tertiary element, whereas the true spiders, strangely enough, are quite disap- 

 pointing in this respect, even more so than the centipedes. 



Insecta. 



In order to get an idea of the zoogeography of the island insects I asked a 

 number of specialists for information on the general distribution of genera and 



