SCHEME OF CLASSIFICATION XV 
TRILOBITA (p. 221). 
Families. 
Agnostidae (p. 244). 
Shumardiidae (p. 245). 
Trinucleidae (p. 245). 
Harpedidae (p. 245). 
Paradoxidae (p. 246). 
Conocephalidae 
= Conocoryphidae (p. 247).. 
Olenidue (p. 247). 
Calymenidae (p. 247). 
Asaphidae (p. 249). 
Bronteidae (p. 249). 
Phacopidae (p. 249). 
Cheiruridae (p. 250). 
Proétidae (p. 251). 
Encrinuridae (p. 251). 
Acidaspidae (p. 251). 
Lichadidae (p. 252). 
ARACHNIDA (p. 255). 
DELOBRANCHIATA=MEROSTOMATA (pp. 258, 259). 
Orders. Families. Sub- Families. 
Xiphosura Vee atat te ela eln era Be f Xiphosurinae (p. 276). 
(pp. 258, 259, 276) y Siphosuridae (p. 276) | ‘Tachypleinae (p. 276). 
Eurypterida=Gigantostraca . 9 
sees 258, ke \ Eurypteridae (p. 290). 
EMBOLOBRANCHIATA (pp. 258, 297). 
f Buthinae (p. 306). 
\ Centrurinae (p. 506). 
Diplocentrinae (p. 307). 
[ tradacinae ( (p. 307). 
Scorpionidae (p. 306) [Batson (p. 307). 
Buthidae (p. 306) 
Hemiscorpioninae (p. 307). 
Scorpionidea Ischnurinae (p. 307). 
(pp. 258, 297) Chaerilidae (p. 307). 
Megacorminae (p. 308). 
Chactidae (p. 307) J fuscorpiinae (p. 308). 
Chactinae (p. 308) 
Vejovidae (p. 308). 
_Bothriuridae (p. 308). 
‘ Thelyphonidae (p. 312). 
Schizonotidae = Tartaridae 
(p. 312). 
Tarantulidae = Phrynidae { 
(p. 312) 
Liphistiidae (p. 386). 
Pedipalpi (pp. 258, 308) Tarantulinae (p. 313). 
Phrynichinae (p. 318). 
Charontinae (p. 313). 
( Paratropidinae (p. 387). 
Actinopodinae (p. 387). 
4 Aviculariidae = Mygalidae I sureae Gi. 988) 
(p: 386) Barychelinae (p. 389). 
Aviculariinae (p. 389). 
\ Diplurinae (p. 390). 
Araneae (pp. 258, 314) 
(Continued on the next page.) 
