122 TJ. S. NATIONAL MUSEUM BULLETIN 212 



Type Locality: England. 



Range: Europe, from where introduced into North America where it is 

 known from Nova Scotia and Quebec south to Virginia and Tennessee. In 

 many places it is well established in cultivated areas. 



Suborder PARAIULIDEA 



Paraiulidi Brolemann, 1923, Arch. Zool. Exper. Gen., vol. 61, No. 2, p. 103. 

 Blaniulidae Attems, 1926, in Kiikenthal-Krumbach, Handbuch der Zoolo- 



gie, vol. 4, p. 182. 

 Arthrophora Verhoeff, 1930, in Bronn, Klass. und Ordn. des Tier-Reichs, 



Band 5, Abt. 2, Lief. 10, p. 1643. 



KEY TO THE FAMILIES OF PARAIULIDEA 



L Coxite and basal part of telopodites of anterior gonopods broadly articulated and con- 

 nected at the median line; gonopods partially sunk in pockets; tergites strongly 



longitudinally striate Paeromopidae (p. 126) 



Anterior gonopods not articulated as described above 2 



2. Anterior and posterior gonopods very unequal in size, the anterior pair long and ex- 



posed, the posterior pair short and concealed within the body. 



ZOSTERACTIIDAE (p. 150) 



Anterior and posterior gonopods not especially unequal in size, both visible ex- 

 ternally 3 



3. Mandible with 4 pectinate lamellae; gnathochilarium of similar form in both sexes; 



neither the second nor the seventh pair of legs of males modified ; first legs of male 



with 1 to 6 joints Nemasomidae (p. 122) 



Mandible v/ith 7 or 8 pectinate lamellae ; gnathochilarium different in the two sexes ; 

 first legs of male with 6 joints and much thickened, the second and often the 

 seventh legs also modified Paraiulidae (p. 129) 



Family NEMASOMIDAE Bollman 



Nemasominae Bollman, 1893, U. S. Nat. Mus. Bull. 46, p. 156. 



Blaniulidae (in part) Sinclair, 1895, Myriopoda, in. The Cambridge nat- 

 ural history, vol. 5, p. 44. 



Nemasomidae Silvestri, 1896, Ann. Mus. Civ. Stor. Nat. Genova, ser. 2, 

 vol. 16, p. 183. — Chamberlin, 1922, Proc. Biol. Soc. Washington, 

 vol. 35, p. 9. 



Protoiulidae Verhoeff, 1896, Verb. Naturh. Vereins Rheinlands, West- 

 falens, und Osnabriick, vol. 53, p. 210. 



Blaniulinae Attems, 1909, Arkiv for Zoologi, vol. 5, No. 3, p. 35. 



Blaniulidae Brolemann, 1921, Arch. Zool. Exper. Gen., vol. 60, Notes et 

 Revue, No. 1, p. 1; 1923, Arch. Zool. Exper. Gen., vol. 61, p. 110. 



Genus BLANIULUS Gervais 



Blaniulus Gervais, 1836, L'Institut, vol. 4, p. 435; 1836; Extraits Soc. 

 Philom. Paris, p. 72. — Attems, 1909, Arkiv for Zoologi, vol. 5, No. 

 3, p. 44 — Brolemann, 1923, Arch. Zool. Exper. Gen., vol. 61, p. 283. 



