631 



but two species, O. proteus Fiiis, 1SG9 (Syn. 1875, O. 

 Laeazii Villot), and O. insiguis LoiinlK'i-g, are described 

 fiom wild birds. 



I Infundibulum divided into 5 parts; strobila 10mm 



to 25mm long", with about 19 segrnents; hooks on 



I suckers arranged in three rows; found in 



! Tring-a alpina, Charadrius hiaticula, CalidTis 



I arenaria. Larus canus. Limosa rufa O. proteus. 



Infundibulum not divided, but its order undu- 

 I lated;; strobila .^0"lm to 100mm and more long; 

 t foumd in tlaematopu-s ostrealegus O. insignis. 



GENUS INCERT. TAENIA S. L. 



A number of other tapeworms have been described 

 from domesticated fowls, but their generic ]»()sition 

 can not be determined with the data at hand. 



27. TAENIA CANTANIANA Polonio, 1860. 

 [PI. XX, fig. 256.] 



Polonio (1860, pp. 21-22) describes a supposed new 

 species of tapeworm as follows: 



1. T. Cantaniana Polonio. Caput globosum, centro unbona- 

 tum; acetabulis cruciatim oppositis ob majorem capitis circu- 

 lum; collum nullum ;corpus retrorsum dilatatum, articulis 

 supremis campanaeformibus, setquentibus campanaeformibus 

 imbricatis trapezoidalis; aperturae genitales marginales. Long, 

 0.013. 



HabitiQculum: Meleagris Gallopavo, in intestina, Octobri 

 Patavi (Polonio). 



In his second paper (1860, p. 221) this form is cited and is 

 figured on Taf. VII, 2 (vide PI. XIX. fig. 256 of this paper). 

 The pores are evidently unilateral. Von Linstow (1878, p. 122) 

 includes this among the parasites of the pheasant Phasianus 

 colchicus, but does not give his authority. 



All subsequent remarks upon this species are based upon 

 Polonio's statemlpnts. Blanchard K1891B pp. 4.39-440) thinks 

 this form may possibly belong to the genus Davainea, and 

 takes the following characters from Polonio's figure: 



Suckers large and round; the head seems to be surmounted 

 by a very short rostellum, probably retractile. The neck is 

 quite long, distinctly separated from the head. Segments num- 



