RESEARCHES IN HELMINTHOLOGY AND PARASITOLOGY. 25 



Habitat. — Grows in profusion from mucous membrane of the ven- 

 triculus of Passalus conndus. 



Remarks. — This is a very graceful form, and is more disposed to 

 grow in bunches or close together than the other species. I have 

 not met with it with the terminal two cells in twelve specimens of 

 Passahis, which contained over a hundred of the plants, although 

 from some of the individuals appearing truncated at the distal ex- 

 tremity, I think it probable that they may occur ; otherwise it would 

 form a distinct genus. 



Cladophytuni ramosissinmm. — Filaments ver}^ long, very delicate 

 and very much branched, growing in fasciculi of moderate density- 

 from granular masses. 



Length i-75th inch ; thickness of principal filaments or trunks 

 i-i 5000th inch. 



Habitat. — Growingin moderate profuseness from the mucous mem- 

 brane of Passalus cornutus. 



New Genus. Corynocladus.* 



Filaments hyaline, inarticulate, very compound, branches thicker 

 than the trunk, clavate, without ramuli, growing from rounded or 

 oval granular masses. 



Coryuocladus radiatiis. — Comatose, growing in verj' dense bunches, 

 occasionally straggling, branches spreading, terminal ones very long, 

 simple, clavate, i- 150th inch long. 



Length i-iooth inch, diameter of trunk i-iooooth inch, branches 

 I -600th in. 



Habitat. — Growing profusely in the ventriculus of Passa/iis cor- 

 )iutus, from the mucous membrane. 



New Genus. CRVPTODESMA-t 



Filaments ribbon-like, growing from attached granular masses. 

 Consisting of a single cell, with a very delicate cell wall, and minute 

 granular contents. 



C. temds. — Filaments hyaline, compressed, attenuated at both ex- 

 tremities, growing in dense bunches from rounded granular masses. 

 Cell wall very thin and delicate, granular contents of cell very fine 

 and indistinct, measuring from i-iooooth inch to i-6oooth inch, with 

 a few coarser granules, and occasionally a few globules, measuring 

 i-i875th in. 



* Coryuocladus : — Kopb'Mj. clava ; l\Xa8o<;. 



t Cryptodesiiia : — /{fiu7rT(')>^\ occultus ; ih^fj.Y^, fascis. 



