589 



This genus was proposed recently in a preliminary communi- 

 cation by Diamare. A more complete knowledge of the worm 

 is necessary before it will be possible to judge whether the 

 genus is well founded or not. No member of the genus has yet 

 been recorded in domesticated fowls, but the type and only 

 species Is found in the flamingo. 



6. AMA3IL.IA UAMELLIGERA (Owen, 1835) Diamare, 1893. 



1835, Taenia lamelligera Owen.) 



(PI. II, figs. 18-20.) 



Diagnosis: Strobila 120mm to 170mm long, 10.5mm broad. 2.1">m 

 thick. Head almost globular; rostellum cylindrical, obtuse; 

 armature? Neck absent; segments very short. Genital pores 

 double; ovary single and median. Ova segregated near base 

 of i)enis. 



Hosts: Flamingoi (Phoenicopterus antiquorum). 



Geographical distribution: ? by Sykes; France by Gervais; ? 

 Sardinia (? Cagllari) by Ficalbi. 



II. Genital pores single. Suckers armed or unarmed. 



A. Suckers unarmed: genera Hymenoleijis, Dicranotaenia. 

 and Drepanidotaenia. 



Genus HYMENOLEPIS Weinland, 1858. 



(18.58, Diplacanthus Weinland (nee L. Agassiz).) 



Diagnosis: Strobila small (filiform). Head small, provided 

 with a retractile rostellum, well developed and armed with a 

 single crown of 24-30 booklets, or rudimentary and unarmed. 

 (Neck long. Segments serrate, much broader than long, rarely 

 less than 150 in number.) Genital pores marginal, sinistral, 

 the female surface of the proglottid representing ventral. 

 Testicles few, generally 3 i.n eacli segment, one left and two 



lOwen states that his specimens were collected by Lieuten- 

 ant-Colonel Sykes "in a Flamingo, Phoenicopterus ruber. 

 Linn." Diamare states that his own specimens were collected 

 by "Professor Ficalbi, della R. Universita di Cagliari," from 

 "Phoenicojiterus roseus." According to Dr. T. S. Palmer, the 

 Old World flamingoes are P. antiquorum Temm. (syn. P. roseus 

 Pallas), P. erythraeus, and P. minor; the New World flamin- 

 goes are P. ruber Linn., a*id P. ignipalliatus. In Owen's time, 

 however, all flamingoes were included under the name P. intber 

 Linn. As it was not stated where Sykes collected his mater- 

 ial it is impossible to determine the host species definitely, but 

 upon Dr. Palmer's advice I take P. antiquorum as host. 



