185] PROTEOCEPHALIDAE—LA RUE 185 



semper deest, et Borkius, qui Taeniolas suas in Glanidis intestinis crassis ^epererit, 

 nonnisi partem vermium summam offendisse videtur, dum articulos rugas potius 

 referre asserit, quod de hujus tantum parte antica valet. Goezius vermes majores 

 reperit et ejusdem icon (fig. ii.). Taeniam integram sistens, bona est. Capitis 

 vero icones neque Borkiana neque Goeziana laude dignae sunt. Zederus, verme 

 licet non vise, alteram Goezii speciem rescindendam esse, recte praedixerat. 



"Obs. 3. Miillerus de Taenia ocellata, nobis n. 21. dicta, loquendo, Taeniam 

 transverse-lineatam Goezii ab ilia lineolarum lateralium defectu solo forsan dif- 

 ferre, suspicatus est, quo Gmelinus commotus, qui Taeniam nostram oscellatae 

 varietatem fingeret, sed osculata toto coelo diversa, et rostello solo jam distingui 

 potest. 



"Obs. 4. Omnes quidem Taeniae osculatae sunt, nostra autem (uti et praece- 

 dens) Kar'i^oxrjO ita \T)cari potest, cum osculo quinto quasi instruatur, et oscula 

 valde profunda sint. Goezii ergo nomen conservavi, et praecedentem simili voce 

 designavi." 



Rudolphi (1810:115) also described Taenia calycina from Silurus 

 glanis. This species he later (1819:497) came to consider as identical 

 with Taenia osculata. His later observations are here given : 



"Entozoologiam edendo duplicem hujus Taenia formam, mihi tum temporis 

 constantem visam prae oculis habui, quo commotus T. calycinam mihi dictam ab 

 osculata distinxi. Postmodum vero Gryphiae Octobri mense Siluri Glanidis quin- 

 quaginta tres libras pondere aequantis intestina examinando, Taenias plurimas 

 reperi inter T. osculatam et calycinam et ita quidem intermedias, ut nullum amplius 

 discrimen superesset. Tres quatuorve pedes longae collo mox longiore mox bre- 

 viore utebantur; articuli lineis longitudinalibus, rarius (posteriores) etiam trans- 

 versis insignes ; aquae commissae quasi gelatinosae reddebantur, aliquot dies vivae 

 conservatae. Taenia calycina ideoque rescindenda est." 



Rudolphi (1819:150) gave a very brief Latin diagnosis of T. oscu- 

 lata and stated that he had collected it at Greifswald. Dujardin (1845) 

 and Diesing (1850) added very little to the previous diagnoses and de- 

 scriptions. Wagener (1854) is inaccessible to the writer hence it is 

 impossible to review his findings. Cams (1857) gave two drawings of 

 this form after Wagener (1854). Van Beneden (1861:165) listed this 

 species of cestode. Riggenbach (1896) considered it a species of Ich- 

 thyotaenia but he gave no descriptive data on the species. Two draw- 

 ings of the head by Wagener are reproduced (Figs, 161, 162). 



Liihe (1909:30-31) gave a short descriptive diagnosis of the species 

 and in an original figure, reproduced (Fig. 182), he showed a little of 

 the structure of the proglottid. His diagnosis reads: 



"Zirka 50 cm bis i m lang, bei einer grossten Breite von ca. 3 mm. Scolex 

 mit einem kleinen scheitelstandigen "Saugnapf", der mit zahlreichen, sehr hinfalli- 

 gen Hakchen von 0,007 niin Lange besetzt ist. Proglottiden mit entwickelten 



