8 Arachn. 
XI. ARACHXIDA. 
109. Wheler, E. G. Ticks and “ louping-ill.” Sci. Gossip, New Series, 
vi, pp. 5-7, 48-50, 106-110. 
110. Wolcott, R, H. On the North American species of the Genus Atax 
(Fabr.) Bruz. Tr. Amer. Micr. Soc. xx, pp. 193-259, pis. xxviii-xxxii, 
and Stud. Univ. Nebraska, Nos. 30 & 31, June, 1899. 
II. BIOLOGY. 
1. Anatomy and Physiology. 
Anatomy of the Eyes of Spiders; Hextschel (38). 
Anatomy of Pseudoscorpiones—alimentary canal, glands, sexual organs, 
circulatory apparatus, etc.; Supixo (95). 
Morphology of Hydrachnidce; Nordenskiold (55). 
Ferment secreted by Ixodes ricinus preventing coagulation of the blood, 
p. 37 ; Sabbatini, Arch. ital. Biol. xxxi. 
New lymphatic gland in Scorpions ; Kowalevsky (45). 
2. Embryology and Evolution. 
Oviposition in Pholcus; Pokrowsky, Zool. Anz. xxii, p. 270. 
Development of the Hydrachnidce , p. 39; Nordenskiold (55). 
Development of the Eyes of Spiders; Hextschel (38). 
Embryonic Head Appendages in Spiders; Pokrowsky (72). 
Sexual characters and Age of S. African Scorpions, p. 131; Purcell, 
Ann. S. African Mus. i. 
Parthenogenesis in Acari; Trouessart (106). 
A double cocoon of Theridium bimaculatum , p. 267; Simon, Bull. Soc. 
ent. France 1899. 
Phylogeny of Hydrachnidce , p. 48; Nordenskiold (55). 
3. Classification and Nomenclature. 
Classification of the Solifugce , diagnoses of families, etc.; Kraepelin 
(47).—Classification of Pedipalpi ; Cook (21).—Classification of Anal- 
gesmce, corrections; p. 40, Trouessart, Bull. Soc. Angers xxviii.—Classi¬ 
fication of the Hydrachnidce ; p. 48, Nordex t skiold (55). 
Synopsis of species of Opisthophthalmus , p. 175; Purcell, Ann. 
S. African Mus. i. 
Specific characters in Scorpions, p. 1 32; Purcell, t. c. 
Two races of Opisthophthalmus wahlbergi distinguished by colour of the 
sting, p. 139; Purcell, t. c. 
Systematic position of the Pentastomidse discussed; Ihle (40). 
History of genus Poecilotheria ; p. 86, Pocock, Ann. Nat. Hist, (vii), iii. 
4. Habits and Distribution. 
Bite of A vgas persicus ; Behr (9). 
Habits of Epeiroides bahiensis ; Goldi (33). 
Mode of life and habits of species of A tax ; Wolcott, Tr. Amer. Micr. 
Soc. xx, pp. 244-251. 
Habits and Biology of Pediculoides ventricosus; Brucker (15) and 
Miscell. Biol. p. 67. 
