CLASS II.— INTESTINA— ENTOZOA, Rudolphi. 



This class, so far as has been observed, is destitute of any true 

 circulation, though there are obscure vestiges of nerves. Most of 

 the genera live only in the interior of other animals. 



They are divided into two orders. 



Intestina 



Class. Order. 



Intestina cavitaria 

 Intestina parenchymata 



■■{k 



ORDER I. — Intestina Cavitaria — Nematoidea, RudolphL 



Genus. Subgenus. Example of Species. 



Filaria, L Fi). Medinensis, Gm. 



1. Trichocephalus, j ^ ^. ^^^^ 



proper ) 



{ 



Trichocephalus....^ ^, ^-^--- 



3. Oxyuris Ox. curvula, Riid. 



CucuUanus C. lacustris, Gm. 



Ophiostomus O. cystidicola. 



Ascaris As. lumbricoides, L. 



Strongylus Stron. equinus, Gm. 



Spiroptera Sp. strumosa, Nits. 



Physaloptera See Rud. Syn. 29. 



<:^ T . r>j • f !• Scelorostoma, Blain. 



Scelorostoma, Blain. | ^ Liorhynchus, Rud. 



Linguatula 



Prionoderma Cucullanus ascarhoides 



1. Lernaea, prop L. branchialis, L. 



2. Pennella, Oken .... Pen. filosa, Gm. 



3. Sphyrionis, Cuv. . . Chondracanthe lisse, Quoy&G. 

 Lernaea / ^' Anchorella, Cuv. . . Lernaea adunea, Strsem. 



5. Bracliiella, Cuv B. Thynni, Cuv. 



6. Clavella, Oken Lernaea uncinata, Miill. 



7. Chondracanthus, 1 Lemsa radiata, Mull. 

 Laroch j 



Nemertes, Cuv Nam. Borlasii, Cuv. 



Tubularia, Renimeri. 

 Ophiocephalus, Quoy S: G. ■ 



Cerebratula, Renimeri 



