6 7 ß D i e s i n g. 



Phalanx I. Caput epidermide adnata tunicatum. 



L. SPIROPTERA RUDOLPHL 



Corpus elongatum, teretiusculum, inerme v. armatum, exalatum 

 vel alatum. Caput corpore continuum, inerme v. armatum, exalatum 

 vel alatum. Os terminale, circulare, nudum v. papillosum, rarissime 

 dcntatum. Extremitas caudaüs maris spiraliter devoluta, utrinque 

 alata, feminae recta, exalata. Penis liliformis vagina monopetala 

 ligulaeformis. Apertura genitalis feminea antrorsum v. retrorsum 

 v. in medio corporis sita; uterus bicornis. Ovipara, rarius vivi- 

 para. — Mammalium et Avium, rarissime Piscium et Amphibiorum 

 endoparasita. 



I»e characteribus specierum hujus generis confer cl. Mölln monographiam 

 in Sitzungsber. d. kais. Akad. d. Wissenseh. XXXVIII. (1859). 911. etc. 



I. CORPUS INERME. 



A. Nee Caput, nee corpus alatu in. 



d) Os nudum. 



1. Spiroptera nada Molin 1. c. 919. 



2. denudata Rudolph! I. c. 920. 



3. „ sygmoidea Mol in 1. c. 920. 



4. „ brevipenis Molin 1. c. 921. 



5. subaeqoalis Mol in 1. c. 921. 



6. .. acutissima Rudolphi I. c. 922. 



7. circularis Moli u I. c. 922. 



8. strongylina Rudolph] (partim) I. c. 924 '); 



9. .. gracilis Rurtolphi I. c. 924. 



10. .. megastoma Rndolphi 1. c. 928 adde: 



Creplin: in Wiegm. Arch. 1849. I. 58. (var. major). 



11. „ Ccsllcillos Molin 1. c. 920. 



b) Os papillosum. 



12. „ papulosa Mol in I. c. 929. 



13. .. ai'uminata Mol in I. c. 930. 



14. Cystidioola Rudolphi I. e. 931. 

 I.'). „ excisa Mol in I. c. 932. 



', Coufer etiam Physocephalum sexalatuin hiyus Loci. 



