22 Arachn. 
XI. ARACHNIDA. 
B. Geological. 
Quaternary: sub-fossil Acari in peat; Nordenskiold (120). 
Middle Miocene, (Dysodile) Melilli, Sicily, fossil Acari , Pampaloni (128). 
Permian, Bohemia, Arachnida, n. gg. and spp.; Fritsch (61). 
Steinkohlen formation, Bohemia, Arachnida ; Fritsch (62). 
Carboniferous, Anthracomarti ; Pocock (139). 
Ottweiler beds, Upper Carboniferous, Ohmbach, Anthracomartus , n. sp.; 
von Ammon (1). 
Carboniferous, “ terrain houiller,” Commentry, Opiliones , 2 n. spp.; 
Th^venin (185 & 186). 
Palaeozoic Scorpions of Scotland; Peach (129) p. 374. 
IV. SYSTEMATIC INDEX f. 
Classification of Arachnida. Series Chelicerata : 
i Class, Merostomata [see Record of Gigantostraca\ 
H Class, Arachnida. 
1 Sub-class, Cteidophora nov. (= Ctenophora Poc.) 
Order, Scorpiones. 
2 Sub-class, Lipoctena. 
A. Caulogastra. 
a. Megoperculata nov. 
Orders, Pedipalpi and Aranece. 
b. Cryptopercidata nov. 
Order, Meridogastra. 
B. Holotracheata nov. 
a. Holosomata. 
Orders, Chelonethi , Opiliones , Acarina. 
b. Mycetophora. 
Order, Solifugce. 
Borner, Zool. Anz. xxv, p. 465. 
1. SCORPIONES. 
Synopsis of Centr. American families, p. 1; Pocock, Arach. Scorpiones, 
Biol. Centr.-Amer. 
Entosternite; Pocock, Quart. J. Micr. Sci. (n. s.) xlvi, p. 227. 
Anw’octonus, p. 13, phceodactylus , p. 14, pis. iii, figg. 4, 4a-e, iv, figg. 1, 
1 a-c; Pocock, Arach. Scorpiones, Biol. Centr.-Amer. 
Babycurus zambonellii , Erythrea; Borelli, Boll. Mus. Torino xvii, No. 422, 
n. sp. 
Brachiosternus [for Brachistosternus\ weijenberghi forma intermedia nov., 
p. 255 ; Lonnberg, Ent. Tidskr. xxiii. 
Broteochactas , p. 15, delicatus , p. 15, pi. iv, figg. 3, 3a-/, 4, 4a & b; Pocock, 
Arach. Scorpiones, Biol. Centr.-Amer. 
B., key to spp., p. 70, granosus, p. 69, porosus , p. 70, Mt. Roraima; Pocock, 
Tr. Linn. Soc. London (2) viii, n. spp. 
f This sign when prefixed to a quotation indicates a fossil form or forms. Where 
the character of a reference is not indicated the words “ description” or “descriptive 
notes ” are to he understood. 
