26 THORELL & LINDSTRÖM, SILURIAN SCORPION FROM GOTLAND. 



Gen. TITYUS C. L. Koch 1836. 

 1. T. ? eogenus Menge 1861. 



Sub-fam. BUTHINI n. (= Androctonini Pet.) 



For the characters of these recent families and sub-families, as aJso of the ge- 

 nera belonging to them, see especially Peters, Ueber eine neue Eintheilung der Skor- 

 pione, in the Monatsbericht d. Königl. Akad. d. Wissenschaften zu Berlin, 1861; Tho- 

 rell, On the classification of Scorpions; loc. sup. cit.; Simon, Etudes sur les Scor- 

 pions, in the Revue ZooL, 1870; Karsch, Scorpionologische Beiträge, I et II, in the 

 Mittheil. d. Mttnch. Entoni. Vereins, 1879, etc. 



