UNIVALVES. SERPULA. 



137 



tiloidt's is a spiral shell, flaltish, minute, and is furnished 

 with thin, semilunar, internal divisions. 



The colors of the Serpulae are various ; the most gene- 

 ral, however, are brown, purple, yellow, tawny, pink, 

 and white, sometimes a little greenish. The S. semilu- 

 num and S. Melitensis are found fossil; the latter in 

 Malta. 



The Indian, African, American, and Northern oceans 

 supply many species; as also do the European, Mediter- 

 ranean, Adriatic, and Red seas. 



SERVVLA.— Worm-Shell. 



Nautiloides — Nautilus-like. 

 Semilunum — Small Seed. 

 Planorbis — Flat. 

 Spirillum — Minute spiral. 

 *Spiiorbis — Tapering spiral. 

 *Triquetra — Tliree-sided. 

 * I ntricata — Intricate. 

 Filograna — Fasciculate. 

 Granulata — Grained. 

 *Contoituplicata — Twisted. 

 Glomerata — Glomerated. 

 Lumbricalis — Cork-screw. 

 Polythalamia — Many-tubed. 

 Arenaria — Solitary rose. 

 Anguina — Serpent. 

 *Verniicularis — Rotind. 

 Aquaria — Watering-pot. 

 Echinata — Prickly. 

 Ocrea — Boot. 

 Protensa — Lengthened. 



Decussata — Decussated. 

 Proboscidea — Proboscis. 

 Afra — African. 

 Cereolus — Bougie. 

 Cornucopife — Horn of Plenty. 

 Goreensis — Goree. 

 Intestinalis — Intestine. 

 Infundibulum — Fu7inel. 

 Pyramidalis — Pyramidal. 

 Denticulata — Toothed. 

 Melitensis — Malta. 

 Norwegica — Norway. 

 Porrecta — Ascending. 

 Vitrea — Brittle. 

 Cancellata — Grooved. 

 S tellar is — Rayed. 

 Gigantea — Great. 

 Cinerea — Ashy-colored. 

 *Sulcata — Furrowed. 

 *Ovalis — Oval. 



