2'» TAENIA EXIIJS Dujardln, 1815. 



bujaidiii pioposed this name for a tapcwoiiu IdimuI 

 ill clii(jkeiis. bill the descriplion is so insiimcipiit lliat 

 (he species should he ijiiKircd enlirely. Tlie original 

 di's^ription reads : 



"Je proposprai de nommer Taenia exilis un autre taenia Op 

 la poule. bien different aur-si des precedents, mais dont jp 

 n'ai pas encore eu la tete; II est long dp 20nim a (?). Uirg*' de 

 O.irimm en avant ,et de O.gsmm en arrlere. forme d'articlcs coiwts, 

 transverses; les orifices genitaux sont uailateraux; les penis 

 sont lisses, assez longs, largres de 0.015mm precedes par une 

 ample vesicule seminale, remplie des spermatozoides en eche- 

 veau; les oeufs, presque globuleux, ont trois enveloppes; 

 I'pxterne longrue de 0.056mm a O.OfiSmm; la moyenne de 0.054mm: 

 I'lnterne de 0.032mm; I'emlbryon, long de 0.025mm, a des crochpts 

 \nnK de 0.0125mm." 



Airlong (1875, pj). 427-4.'51) chiims to have found the 

 same worm, although it is not at all evident why lie 

 should thinlc his form identical with Dujaidin's 

 si>ecies. He gives the following characters: 



Head is 0.48m'm long- by 0.60mm broad, suckers orbicular 0.20mm 

 diameter; rostellurmi .short 43 /i in diameter, with a simple crown 

 of 60 hooks S /i long; neck 5mm long by 0.15mni broad; segments 

 much broader than long; anterior segments 0.33mm to 0.37mm 

 by 49 /I to 50 /i. then Immi by 0.12mm; middle segments 1.5mm 

 (anterior border) to 1.8mm (posterior border) by 0.6mni. Genital 

 pores unilateral in anterior third of seg>ment. Penis 36 ft by 6 

 /I Eggs globular, outer memibrane 58 /J- to 64 ft inner mem- 

 brane 30 /I to "2 fi. hooks of oncosphere 16 fi. 



30. TAENIA IMBUTIFORMIS Polonio, 1860. 



(1893, Mesocestoides imibutiformis (Polonio. 1S60) Railliet.) 



[PI. XX, fig. 263.1 



Diagnosis: Smm long, head small, suckers circular. Neck ab- 

 sent. Posterior portion of strobila thick, anterior segments 

 linear; following segments bell or funnel shaped; posterior seg- 

 ments linear bell-shaped. Genital pores situated on one of the 

 surfaces of the segments. Development: Unknown. 



