18 Arachn. 
XL Arachnida. 
[1909] 
tion der Prostigmata. *s Gravenliage 
Tijdschr Ent. 52 1099 (19-61) 4 Taf. 
161 
Pack-Beresford, Denis R. A supple- 
mentary list of the Spiders of Ireland. 
Dublin Proc. R. Irish Acad. 27 (B) 
No. 7 1909(87-118). 162 
fParker, William A. The fossil 
Arthropoda and Pisces of Spartli, 
Rochdale. Lancashire Naturalist 
Darwen new ser. 2 1909 (2-8). 163 
Parrott, P. J., Hodgkiss, H. E. and 
Schoene, W. J. The apple and pear 
mites. Agric. Exp. Sta. New York 
Geneva Bull. No. 283 1906 (281-318) 
pi. 164 
Parsons, E. A. and Stainforth, T. 
Notes on East Riding Spiders in 1909 
Naturalist London 1909 No. 635 (438- 
440). 165 
Peckham, G. W. The generic name 
Rooseveltia. Milwaukee Bull. Wis. 
Nat. Hist. Soc. 61908(171). 166 
Peckham, George W. and Peckham, 
Elizabeth G. Revision of the Attidae 
of North America. Madison Trans. 
Wis. Acad. Sci. 16 Pt. 1 1909 (355-646) 
pis. xxix-li. 167 
Pesker, Dora. Zur Frage von den 
Cardiocolomoffnungen bei den Arach- 
noideen. Zool. Anz. Leipzig 34 1909 
(90-93). 168 
Petrunkevitch, Alexander. Contribu- 
tions to our knowledge of the anatomy 
and relationships of spiders. Ann. Ent. 
Soc. Amer. Columbus Ohio 2 1909 
(11-20) pi. iv. 169 
Petrunkevitch, Alexander. A Trip 
to Southern Mexico for Spiders. Amer. 
Mus. J. New York N.Y. 9 (249-256). 
170 
Pettit, A. vide Laveran, A. 
Pickard-Cambridge, O. On British 
Arachnida noted and observed in 1908. 
Dorchester Proc. Dorset Nat. Hist. 
F. Cl. 30 1909 (97-115) pi. A. 171 
Pocock, R. I. Mimicry in Spiders. 
London J. Linn. Soc. Zool. 30 1909 (256- 
270) pi. xxxii. 172 
Police, Gesualdo. Alcune nuove 
specie di Halacaridae del Golfo di 
Napoli, Archivio zool. Napoli 3 fasc. 4 
1909 (409-443) 2 tav. 173 
Porchet, F. vide Faes, H. 
Purcell, W. F. Development and 
origin of the respiratory organs in 
Araneae. Q. J. Microsc. Sci. London 
51 pt. 1 1909 (1-110) pis. i-vii. 174 
Rainbow, W. J. Notes on the 
architecture, nesting habits and life 
histories of Australian Araneidae based 
on specimens in the Australian Museum. 
Sydney N.S.W. Rec. Austr. Mus. 7 
1909 (212-234) pis. lxii-lxiv. 175 
Rauther, Max. Morphologie und Ver- 
wandtschaftsbeziehungen der Nema- 
toden und einiger ihnen nahe gestellter 
Vermalien. Ergebn. Zool. Jena 1 
1909 (491-596). 176 
Reuter, Enzio. N&gra ord om hvit- 
axacariden Pediculopsis ( Pedicu - 
loides) graminum E. Reut., dess geo- 
grafiska utbredning och dess forekomst 
tillsammans med en Sporotrichum- 
art. [Einige Worte iiber die Weissah- 
rigkeit verursachende Acaride Pedi- 
culopsis ( Pediculoides ) graminum E. 
Reut., ihre geographische Verbreitung 
und ihr Vorkommen zusammen mit 
einer Sporotrichum- Art.] Helsingfors 
Medd. Soc. Fauna et FI. Fenn. 35 1900 
(173-177 ; deutsches Ref. 337). 177 
Reuter, Enzio. Zur Morphologie und 
Ontogenie der Acariden mit besonderer 
Beriicksichtigung von Pediculopsis 
graminum (E. Reut.). Helsingfors 
Acta Soc. Sc. Fenn. 36 No. 4 1909 
(288 pp.) 6 Taf. 178 
Richters, F. Tardigraden unter 77° 
S. Br. Zool. Anz. Leipzig 34 1909 
(604-600). 179 
Richters, Ferd. Tardigraden-Stu- 
dien. Frankfurt a. M. Ber. Sonckonb, 
Ges. 40 1909 (28-44) 2 Taf. 180 
Richters, F. Marine Tardigraden. 
Verh. D. zool. Ges. Leipzig 19 1909 
(84-95) 1 Taf. 181 
Rodger, Alex. M. Argyroneta aqua- 
lica Latr. in Perthshire. Ann. Scot. 
Nat. Hist, Edinburgh 1909 (249). 182 
Rodhain, J. vide Broden, A. 
Rossi, Adolfo. Materiali per una 
Fauna aracnologica della provincia di 
Roma. Chernetes (Pseudoscorpioni). 
Firenze Boll. Soc. Entom. 40 (1908) 
1909 (182-194). 183 
Rousseau, E. Hydrachnides nou- 
veaux pour notre faune. Bruxelles 
Ann. Soo. ent. Belgique 53 1909 (450). 
184 
