72 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



TOL. 5S. 



is anterior of the middle of the lateral margin of the segment, and 

 the cirrus pouch and vagina open at the same level. Gravid segments 



(fig. 76) are lanceolate in out- 

 line. The longitudinal ex- 

 cretory canals are very large, 

 three times as large as in 

 Dipylidium caninum. Calcare- 

 ous corpuscles are numerous. 



Male genitalia. — Judging 

 from the illustration, the testes 

 are large, few in number 

 (about 50?) and uniformly 

 distributed through the me- 

 dian field, not present lateral 

 of the longitudinal excretory 

 canals or of the ovaries. The 

 vas deferens appears to be 

 moderately looped distally, 

 and coiled in the ant6ro-laterai 

 corner of the median field 

 proximally. The cirrus pouch 

 is figured as extending to the 

 lateral canals or lying entirely 

 lateral of these canals, but not 

 crossing them. 



Female genitalia. — The 

 ovary is bilobed and branch- 

 ing. The vitellarium is bi- 

 lobed. Shell gland (?). The 

 vagina opens into a large fusi- 

 form receptaculum seminis. 

 The Qgg capsules contain one 

 egg each, and are distributed 

 throughout the fields lateral of 

 the longitudinal canal as well 

 as median of it. 



Host. — Primary : Felis catus 

 {F. domestica) . 



Location. — Small intestine. 



Locality. — Egypt (Alexan- 

 dria). 



Life history.— Unknown. 

 The figures for the size of the head are based on Diamare's state- 

 ment that the head is twice as large as that of D. echinorhynchoides. 

 The dimensions of the hooks are taken from Blanchard (1907). 



Fig. 76.— DrPTLiDiuM pasqualei. Gravid segment 

 Enlarged. After Diamare, 18936. 



