587 



long. Genital organs double, opening separately each on its 

 respective lateral margin. Uterus composed of egg sacs. Type 

 species: Cotugnia digonopora (Pas<iuale, 1S90) Diamare, 1893. 



This genus \Yas established by IJiamare lor a tape- 

 worm which occurs in chickens. The diagnosis as at 

 pi-eseut given by Dianiai-e fails, in my opinion, to sep- 

 arate the genus distinctly from Dipylidium. Tavo 

 species have been described, but sufficiency of details 

 in the specific diagnoses does not allow a satisfactory 

 morphological distinction at present. 



< Fitund in chickens C. digonopora. 



( Found in ducks T. hifaria. 



3. COTUGNIA DIGONOPORO (Pasquale, 1S90) Diamare, 1S93. The dou- 

 ble-pored chicken tapeworm. 



(1890, Taenia digonopora Pasquale.) 



(PI. I, figs. 1-11.) 



Diagnosis: Strobila 40ni"i to 80n^m broad and in contracted 

 condition about 1mm thick; head 1.4mm by 1.12mm; rostellum 

 with a crowded crown (in a single row) of very small hooks 8.35 

 // long; base of rostellum 0.22mm by 0.15mm; suckers glo'bular, 

 prominent, 0.35mm in diameter. Neck short. Anterior seg- 

 ments broader than long, posterior segments longer than broad. 

 Genital pores double in about the middle of the lateral margins; 

 2 ovaries in each segment; eggs evidently arranged in egg sacs. 



Life history: Unknown. 



Host: Chicken (Gallus domesticus) by Pasquale. 



Geographical distribution: Abyssinia, by Pasquale. 



Pasquale (1890) found this worm quite common in 

 chickens in Massowah and thinks it probable that the 

 poor condition of the fowls was due to its presence. 

 It was frequently present in the caeca as well as in 

 the small intestine. 



