DISCUS. 



117 



and the Island of Chiloc; some are found in New Zealand, 

 while a few again are from the Sandwich and Philippine 



Islands. 



Sjiccies of Discus. 



aculeatus, Mull. 

 alpha, Pfeiff, 

 alternatus, Say. 

 beta, Pfeiff. 

 biconcavus, Pfeiff. 

 Binneyanus, Pfeiff. 

 Cauicalensis, Lone. 

 Celinde, Gray. 

 Chileusis, Muhlf. 

 coarctiliatus, Pfeiff. 

 Coma, Gray. 

 dissimilis, D'Orh. 

 Edelii, Both . 

 Egesta, Gray. 

 epidermius, Anton. 

 fornicatus, Gould. 

 fragilis, Pfeiff. 

 Frivaldskyanus, Bossm. 

 gamma, Pfeiff. 

 Giranicus, Lowe. 

 gradatus, Gould. 

 Guerinianus, Lowe. 

 histrix, Migh. 

 Ida, Gray. 

 iota, Pfeiff. 

 kappa, Pfeiff. 

 lambda, Pfeiff- 

 lamellatus, Jeffr. 

 monilis, Brod. 

 mordax, Shu III. 

 nitidiusculus, Loire. 

 omalomorpha, D'Orh. 



orbicula, D Orb. 

 orthostoma, Pfeiff. 

 perspective, Say. 

 planorboides, Bafin. 

 pcecilostictus, Pfeiff. 

 Portia, Gray. 

 pusillus, Loire. 

 pygmoeus, Drap. 

 quadrat us, Fcrus. 

 quinquestrigatus, Deck. 

 radiellus, Pfeiff. 

 rariplicatus, Bens. 

 rotundatus, Mull. 

 rubiginosus, Gould. 

 ruderatus, Stud. 

 rupestris, Drap. 

 saxicola, Pfeiff. 

 scintilla, Lowe. 

 sigma, Pfeiff. 

 sincerus, C. B. Adams. 

 solitarius, Say. 

 striatellus, Anthon. 

 suturalis, Pfeiff. 

 Swerzenbachii, Calc. 

 tessellatus, Muhlf. 

 theta, Pfeiff. 

 turbiniformis, Pfeiff- 

 Vancouverensis, Lea. 

 varicosus, Pfeiff. 

 vitrinus, Wagn. 

 zeta, Pfeiff. 



VOL. II. 



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