AMERICAN NATURAL HISTORY 



15 



Leidy (Joseph). Some observations on Nematoidea imperfecta, and 

 descriptions of three Parasitic Infusoria. — Trans. Amer. 

 Philos. Soc. 2d Sec. X. 1851, 241. (fig.). (215 

 Nematoideum cavitatis abdominis Passali cornuti. 

 thoracis cavitatis Passali cornuti. 

 intestinorum Armadillonis pillularis. 

 integumenti Lumbriculi limosi. 



Leidy (Joseph). Corrections and additions to former papers on 

 Helminthology, published in the Proceedings of the Acad- 

 emy.— Proc. Acad. Nat. Sc. Philad. V. 1851, 284. (216 



u4ce.stos=Lumbriculus, Grube. 



Anelcodiscus (n. g.) pellucidus. 



Catesthia (n.g.) stellato-maculata.* 



Chaetodemus (n. g.) panduratus. 



Gregarina scarabaei-relicti. 



Rhynchodesmus (n. g.) sylvaticus. =Planaria sylvaticct, Leidy. 



terrestris.==Fasciolaterrestris, Mull. (Planariaterrestris, Dug.), 

 vStylaria fossularis. 



*=Hydrolimax grisea, Hald. 



Pourtales ( L. F.). On the Gephjrea of the Atlantic coast of the 

 United States. — Proc. Amer. Assoc. Adv. Sc. V. 1851, 



39. (217 

 Nov. sp. Sipunculus corallicollus. Florida. 



Gouldii. Massachusetts, 

 granulatus. Florida. 



Wyman ( Jeffries). Some facts relating to the development of Dis- 

 lomata. —Vroe. Bost. Soc. Nat. Hist. IV. 1851, 65. (218 



Leidy (J.). On Gordiacea. V. 1851, 262, 266, 275. (219 

 Nov. sp. Gordius lineatus. New York. 



varius. United States. 

 Mermis crassicaudata. Philadelphia, 

 elongata. New Jersey. 



Gordius robustus. New Jersey. 

 Mermis ferruginea. Brazil. 



