THE ISOPODA 221 



larval (cryptoniscan) stage with abdominal somites distinct, with coxal plates 

 on thoracic somites, with uni- or biramous pleopods, and with terminal, 

 biramous, styliform uropods ; parasitic on Crustacea. 



TRIBE 1. CRYPTONISCINA. 



Male becomes mature in cryptouiscan stage ; protandrous hermaphro- 

 ditism probably universal ; brood-pouch not formed by oostegites ; first 

 larval stage with biramous pleopods. 



Family HEMIONISCIDAE. Hemioniscus, Buchholz (on Cirripedia). 

 Family CYFRONISCIDAE. Cyproniscus, Kossmann (on Ostracoda). Family 

 LIRIOPSIDAE. Liriopsis, Schultze ; Danalia, Giard (on Rhizoeephala). 

 Family ASCONISCIDAE. Asconiscus, G. O. Sars (on Mysidacea). Family 

 CRINONISCIDAE. Crinmiiscus, Perez (on Cirripedia). Family PODASCONIDAE. 

 Podascon, Giard and Bonnier (on Amphipoda). Family CABIROPSIDAE. 

 Cabirops, Kossmann ; Clypeonitcus, Giard and Bonnier (on Isopoda). 



TRIBE 2. BOPYRINA. 



Male becomes mature in bopyroid stage ; sexes probably always distinct ; 

 brood -pouch formed by oostegites ; first larval stage with unirainous 

 pleopods. 



Family DAJIDAE. Dajiis, Kroyer ; Notophryonu, G. O. Sars (on 

 Mysidacea and Euphausiacea). Family BOPYRIDAE (including PHRYXIDAE 

 of Bonnier). Bopyrus, Latreille ; Gyge, Cornalia and Panceri (Fig. 124) , 

 Phryxus, Rathke (on Decapoda). Family ENTONISCIDAE. Entoniscus, 

 F. Muller ; Portunion, Giard and Bonnier (Fig. 1 30) ; Priapion, Giard 

 ind Bonnier ; Cancrion, Giard and Bonnier (on Brachyura). 



LITERATURE. 



1. Bcddard, F. E. Report on the Isopoda. Rep. Voy. "Challenger," Zool. 



xi. pp. 85, 10 pis., 1885 ; and xvii. pp. 178, 25 pis., 1886. 



2. Bobretzky, N. Zur Embryologie des Oniscus murarius. Zeitschr. wiss. 



Zool. xxiv. pp. 179-203, pis. xxi.-xxii., 1874. 



3. Bonnier, J. Contribution a 1'etude des l^picarides : Les Bopyridae. Trav. 



Stat. zool. Wimereux, viii. pp. 396, 41 pis., 1900. 



4. Budde-Lund, G. Crustacea Isopoda Terrestria. Pp. 319. 8vo. Hauniae, 



1885. 



5. A Revision of "Crustacea Isopoda Terrestria," with additions aud 



illustrations. 1. Eubelum. Entom. Meddel. (2), i. pp. 67-97, 4 pis., 1901 

 (published separately, 1899). 2. Spherilloninae. 3. Armadillo (oiily 

 published separately), pp. 33-144, 5 pis. Copenhagen, 1904. 



6. Bullar, J. F. The Generative Organs of the Parasitic Isopoda. Jouru. 



Anat. Physiol. xi. pp. 118-128, pi. iv., 1876. 



7. On the Development of the Parasitic Isopoda. Trans. Roy. Soc. 



London, clxix. (2), pp. 505-521, pis. xlv.-xlvii., 1878. 



8. Caullcry, M. Recherches sur les Liriopsidae. Mitth. zool. Stat. Neapel, 



xviii. pp. 583-643, pi. xxvi., 1908. 



