TITLES. 
Arachn. 9 
142. [Oudemans, A. C.] Symbiose van Koptorthosoma en Greenia eene 
prioriteits. Kwestie. Ent. Ber. Nederland. No. 14, pp. 98 & 99. 
143. — 
92. 
144. 
145. 
146. 
147. 
148. 
149. 
103. 
Acarologische Aanteekeningen No. vii. 
Acarologische Aanteekeningen No. viii. 
T. c. No. 13, pp. 91 & 
T. c. No. 14, pp. 100- 
Acarologische Aanteekeningen No. ix. 
Acarologische Aanteekeningen No. 10. 
Ibid. No. 11. T. c. No. 17, pp. 153 & 154. 
Ibid. No. 12. T. c. No. 18, pp. 160-163. 
Note on a new genus and species of parasitic Acari 
r. c. No. 15, p. 119. 
T. c. No. 16, p. 140. 
Note vm. 
Notes Leyden Mus. xxiv, 1902 (July, 1904), p. 216, text-fig. 
150. . Lcelaps versteegii , a new species of parasitic mite. Note ix. 
T. c. pp. 223-231, text-figg. 
. [See F. Heim & Oudemans (83).] 
. [See Voigts & Oudemans (223).] 
151. Pavesi, P. Esquisse d’une faune Valdotaine (Arachnida, pp. 62-68 
[250-256]). Atti Mus. Milano xliii, 1904. 
Pearce, N. D. F. [See Warburton & Pearce (228).] 
152. Perez, Ch. Sur les larves d’Hydrachnes. C.R. Soc. Biol, lvi, 1904, 
pp. 263 & 264. 
Perkins, R. C. [See E. E. Green & R. C. Perkins (76).] 
153. Piersig, Richard. Neues Verzeichnis der bisher im Sachsischen 
Erzgebirge aufgefundenen Hydrachnidenformen. n. Ber. Annaberg 
Ver. 1903, pp. 34-46, 2 pis. 
164. . Ueber eine neue Hydrachnide aus dem Bohmen Walde. Zool. 
Anz. xxvii, pp. 453 & 454, 1 fig. 
155. . Eine neue Aturus Art aus dem Bohmisch. bayerischen Walde. 
T. c. pp. 471 & 472. 
156. . Verzeichnis der bisher von der biologischen Wolga-Station zu 
Saratow gesammelten Hydrachniden. Annuaire Mus. St. Petersb. ix, 
1904, pp. 45-56, text-figg. 
157. Pocock, R. I. On a new stridulating organ in Scorpions, discovered 
by W. J. Burchell in Brazil in 1828. Ann. Nat. Hist., Ser. 7, xiii, 
1904, pp. 56-62, 1 pi. 
158. Note on Ixodes. [See Christy, C. (45).] 
159. Pol jan sky, J. Zur Embryologie des Scorpio indicus, pp. 42-55 
[in Russian], pp. 83-90 [in German]. Trudui St. Peterb. Obshch. 
xxxiii. 
160. Pritchett, Annie H. Observations on Hearing and Smell in Spiders. 
Amer. Natural, xxxviii, pp. 859-867. 
161. Purcell, W. F. Descriptions of new genera and species of South 
African spiders. Tr. S. African Soc. xv, pt. iii, pp. 115-173, pis. x 
& xi. 
162. . On the species of Opisthophthalmus in the collection of the 
South African Museum, with descriptions of some new forms. Ann. 
S. African Mus. iv, pt. ii, pp. 133-180. 
