204 
and the limbs. The negligence becomes still more 
aggravating, because W. Sorensen in several of his 
works about Opitliones is examining much more care- 
fully than Gaubert, according to the impression I have 
recieved of his examination of the existence of the lyri- 
form organs and others. I shall, however, in the treat- 
ment of the next order mention several similar questions). 
VI Chelonethi (Pseudoscorpiones). 
Stecker, A.: Ueber neue indische Chernetiden (Sitzungsber. 
d. Kaiserl. Akad. d. Wiss. in Wien, Math.-Naturw. 
Classe, LXXII. B, I, 1875, p. 512—26, Taf. I—IV). 
Hansen, H. J.: Arthrogastra Danica. En monographisk 
Fremstilling af de i Danmark levende Meiere og 
Mosscorpioner, med Bidrag til sidstnævnte Under- 
ordens Systematik (Natur. Tidsskrift, 3. R. B. XIV, 
1884, p. 491—554). — The paper is not accompanied 
with figures, but references are made to the contem- 
porary revision of the same author of Arthrogastra 
Dan. in »Zoologia Danica«, 4de Hefte, Spindeldyr, 
of which Pl. VII contains numerous original figures 
of Chelonethi,while the accompanning text is popular. 
Bertkau, Ph.: Ueber den Bau der Chernetiden oder 
Pseudoscorpione (Sitzungsber. d. Niederrh. Gesellsch. 
f. Nat. u. Heilkunde, 1887, p. 112—117). — The 
treatise is quoted after Bertkau’s Jahresb. f. 1887, 
p. 8586. 
Croneberg, A.: Beitrag zur Kenntniss des Baues der Pseudo- 
scorpione (Bull. de la Soc. Imper. des Naturalistes 
de Moscou. Nouv. Ser. T. II, 1888, p. 416—61, Taf. 
x, Xena): 
Balzan, L.: Revisione dei Pseudoscorpioni del Bacino 
dei Fiumi Parana e Paraguay nell’ America meridio- 
nale (Ann. del Museo Civico di Storia natur. di 
