Ampbilinidae. — Monostomidae. 123 



? M. Bhombi laeris Wedl (J/. Wedlii Cobb.). Corpus ^'i mm longum, '3 mm 

 latum, intestiniim furcatum. 



Habit. : Bhomhus laevis, iu cystidibus ad radios pinnarum affixis et sub mucosa in- 

 testinali occurrentibus : Trieste (Wedl). 



Vil/. Tethi/dis DCh. „Corpore lutescente, lineari-depresso." 



Habit. : Tethijs leporina: Napoli (Delle Chlvje). 



?J/. TotariJiCn. „Corpore luteo-carneolo, lineari, conico-elongato, annuloso, posterius 

 attenuato." 



Habit. : Ommastrephes todarus: Napoli (Delle Chiaje). 



?JI/. Sepiolae DCh. ,,Cnrpore luteolo ovato, antice filiformi, rigido, acuto." 



Habit. : Sepiola: Napoli (Delle Chiajt:). 



?il/. Octopodis DCh. „Corpore clavato, antice fiiiformi." 



Habit. : Octopus culgaris : Napoli (Delle Chiaje). 



Didymozoon Tschbg. Corpus elongatum, coJlo discreto filiformi; acetahula 

 miUa; pharynx glohosus aut ovalis; intcstinuni simplex aut nullum; testiculus utri- 

 culum fiexuosum convolutum formans, item ovarium; organa vitelligena nulla; apertura 

 gcnitalis pirope ah extremitate anteriorc eorporis. Semper hina animalia, saepe con- 

 creta, in eystide singula. 



1. D. thynni Tschbpt. {Monostomum hipartitum AVedl, Wedlia hipartita 

 CoBB.). Corpus crassum reniforme, collum filiforme; pliarynx ovalis ; intestinum 

 adest. Individua bina saepe coalita formam bicipitem referentia. Long. 6 mm, 

 latit. max. 4, .5 mm. 



Habit. : TJiynnus vulgaris, ad brancliias et arcus branchiales: Nizza 

 (Gr. Wagenee), Napoli (0. Taschexberg), Trieste (Wedl). 



2. D. scombri Tschbg. Corpus elongatum utrinque rotuudatum; pars 

 collaris paullulum tantum attenuatum ; pliarynx globosus ; intestinum adest ; aper- 

 tura 5 in papilla parva; long. 18 mm. 



Habit. : Scomher colias, in cystidibus operculo branchiarum affixis: Xapoli 

 (0. Taschexbeeg). 



3. D. pelamydis Tschbg. Corpus praelongum, postice paullum attenuatum 

 acuminatum, collum tenue, caput cochleariforme ; pharynx globosus; intestinum 

 nullum. Long-. .30 mm. 



H a b i t. : Pelamys sarda , in cystidibus inter laminas branchiarum : Napoli 

 (0. Taschexbeeg). 



4. D. sphyraenae Tschbg. Corpus breve, robustum, postice rotundatum; 

 collum a corpore discretum , caput paullum latius ; pharynx ovalis ; intestinum 

 adest. Long. 15 mm, latit. 1,5 mm. 



H a b i t. : Sphyraena vnlgaris, in cystidibus sub tunica mucosa orali : Napoli 

 (0. Taschexberg). 



5. D. auxis Tschbg. Corpus longum, angustum, fere rectanguhare, inter- 

 dum margine creuato; colhim filiforme, distinctissime a corpore discretum; pharynx 

 ovalis; intestinum nulhim. Animalia bina interdum ad formam annuli concreta. 

 Long. 12 mm. 



Habit. : Auxis Eochci, iu cystidibus laminis brancliialibus adhaereutibus: 

 Napoli (0. Taschenberg). 



Holostomum Nitzsch. Corpus antrorsum utplurimum suhglobosum , apice 

 recte truncatum aut acctahuliforme, liians, amplum, retrorsum angustatum tcretiusculum 

 aut deprcssiusculum ; os suhterminale in margine supero Cacetcdjulum vcntralrj. 



1. H. clavus MoL. Corpus antrorsum globosum, retrorsum oblongum, teres, 

 recurvatum, attenuatum, postice truncatum; caput subbilobum; apertura geuitalis 

 feminea circularis magna. Longit. 0,9 — 1,8 lin. 



Habit. : Gadus Jlerlucius, in intestino crasso: Padova (Molix). 



