

1448 CRUSTACEA. 



Fam. III. PENELLID^E.— Pedes obsoleti. Caput 2-4 appendicibus 

 brevibus rion articulatis muni turn. 



1. PenellinjE. — Pedes pauci rudimentarii vix obsoleti. — Gr. Penella, Oken, Ler- 

 neonema, Edw. 



2. Lerneocerinje. — Pedes omnino obsoleti. — Gr. Lerneocera, Bl., Lernea. 



Subordo II. ARACHNOPODA vel PYCNOGONOIDEA. 

 Fam. I. NYMPHID^E.— Antennis munitse. 



Gr. Nymplium, Fabr., Ammothea, Lh., Pattene, J., Phoxichilidium, J. 



Fam. II. PYCNOGONID^.— Antennis carentes. 



Gr. Pycnogonum, Brunnich, Phoxichilus, Lat. 



Subclassis IV. CIRRIPEDIA. 





Subclassis V. ROTATORIA. 



APPENDIX. 



The following references are here added to genera of Fossil Crus- 

 tacea, not mentioned in the preceding classification, excluding the 

 Trilobite group. 



1. XANTHiDiE. — Arges of De Haan (Faun. Japon., 21 and 52, pi. 5, 



