Revision der Myzhelminthen. Oll 



milo 30mo. Tractus intestinalis unicruris, ano stipatus; anus sub- 

 centralis in acetabulo situs. — Americae centralis incolae. 

 I. Centropygos Jocensis GRUBE et OERSTED. 



Corpus nigio-carneuiii. Acetabulum ad basin haud coarctatum, 

 latitudine corporis, spinulis brevissimis 4 (?). Longit. 31/2 "; latit. 

 maxima inter annulum 60. et 70/num fere 3'", 



Centropygos Jocensis Gnibe et Oersted: in Berieht über die 33. Ver- 

 saninilung deutsch. Naturf. und Ärzte zu Bonn 1857 (adhuc. inedit.). 

 — Grube: in literis mihi benevole communicatis dd, 29. Maio 1858. 

 Habitaculum. St. Joce in America centrali (A. Oersted). 



Genus exstinctum. 

 XXV III. HIRUDINELLA MÜNSTER. 

 Corpus subcylindricum depressum, utraque extremitate attenua- 



tnm rotundatum. Acetahulnm E formatione calcarea litho- 



grapliica. 



1. Hiradineila angusta MÜNSTER. — Syst. Helm. I. 471. adde: 

 Fielet: Traite de Paleontologie. 2. edit. II. 573. 



2. Hiradineila tenuis MÜNSTER. — Syst. Helm. I. 471. adde: 

 Pictel I. c. 573. 



Bdellidea genere penitus dubia, confer Syst. Helm. I. 473 — 476. 



Iudex geueriim et speciernni. 



Acanthobdella Grube: Peledina 510. 



Astacobdella Vallot: Abildgaardi 488, chilensis 488, Philadelphica 



488, Roeseli 488. 

 Aulacosfoma Wiegmann: Giih 499, nigrescens 499. 

 Aalastonium M oquin-Ta n d on : Gulo 499. 



Bdella Savigny: aequinoctialis 500, nilotica 499, trifasciata 500. 

 Branchellion Savigny: orb Iniens is 4:S2, pinnatum ^'^(i. 

 Brnnchiobdella Odier nee Rudolphi: Astaci 480, parasita 480. 

 Branohiobdella Rudolphi nee Odier: orbiniensis 482, Ravenelii 



482, Rudülphii 481, Scolopendra 481. 

 Centropygos Grube et Oersted: Jocensis 511. 

 Clepsine Savigny: affinis 493, algerica 493,bioculata 493, Carenae 



494, carinata 493, catenigera 493, circulans 493, complanata 



493, costata 493, costata 493, Eachana 494, heteroclita 494, 



