56 DB. T. S. C0B130LD's SYNOPSIS Or THE DISTOMIDJE. 



MoNOSTOMA : In corpore reptilium: — ellipticutn; sulcatum; orna- 

 tum ; Histrix ; trigonocephalum ; delicatulum ; spirale ; renicapite 

 (nephrocephalum) ; moUe; incommodum; Gurltii. 



In corpore piscium : — foliaceum ; capitellatum ; orbiculare ; 



liguloideum ; constrictum ; praemorsum ; Filum ; galeatum ; echino- 

 stomum ; caryophyllinum ; Braunii (Muraenulse) ; cochleariforme ; 

 Wedlii (Rhombi) ; gracile ; dubium. 



11. Nematobothrium : — filarina. 



12. CoDONOCEPHALUS : — mutabilis. 



13. EusTEMMA : — Caryopbyllum. 



14. HoLOSTOMA : In corpore avium : — variabile ; Lageiia ; serpens; 

 tennicolle ; Bellinghamii (Falconum) ; Sphferula ; Westrumbii (sphae- 

 rocephalum) ; microstomum ; dubium (Corones) ; Cornu ; longicoUe ; 

 gracile ; erraticum ; platycephalum ; variegatum ; multilobum (cor- 

 nutum) ; crenulatum (Anatis). 



In corpore reptilium : — nitidum. 



In corpore piscium : — Clavus. 



15. Hemistoma : In corpore mammalium: — alatum ; cordatum ; cla- 

 thratum ; pedatum. 



In corpore avium : — Spathula ; podomorphum ; auritum ; 



denticulatum ; commutatum ; trilobum ; spathaceum ; excavatum. 



16. DiPLOSTOMA: — rhachiseum ; cla%'atum ; craniarium ; Miilleri (Petro- 

 myzi) ; cuticola ; volvens ; brevicaudatum ; grande. 



17. Rhopalophorus : — coronatus; horridus. 



18. Amphistoma : In corpore mammalium: — conicum; explanatum ; 

 crumeniferum ; pyriforme ; asperum ; giganteum ; fabaceum ; emar- 

 ginatum ; subtriquetrum ; Conus (truncatum). 



In corpore avium : — unciforme ; Hirudo ; lunatum. 



In corpore reptilium : scleroporum ; grande ; subclavatum. 



In corpore piscium : — Nattereri ; megacotyle ; Ferrum-equi- 



num ; cylindricum ; attenuatum ; oxycephalum. 



19. Amphiptyches : — Urna ; rugosa. 



[Note. — Since the above was written, I have received Diesing's " Nach- 

 tr'dge und Verbesserungen zur Revision der Myzelminfhen," in which a few 

 additional forms are indicated. The publication of this Synopsis having 

 already been accidentally delayed, I have added only one species {Gastero- 

 stoma armatum), as this could be effected without materially altering the 

 type. I may observe that Diesing provisionally places the singular genus 

 Nematobothrium among the Monostomata ; its characters, however, are so 

 distinctive, that I see no reason to doubt the propriety of Van Beneden's 

 arrangement. — T. S. C] 



