218 TAPEWOEMS OF HARES AND BABBITS— STILES. vol.xix. 



29. Two submedian ovaries in each aei/metit 30 



One median ovarii in each segment Amahilia.^ 



30. Several roivs of hooks upon rostellum Dipylidium.^ 



A single I'ow of hooks upon rostellum Cotugnia.^ 



31. Dorsal root of hooks much longer than ventral root or prong ; ventral root vo-y short; 



hooks S to 12 {rarely to 26) in number; known only in birds Drepanidotwnia.^ 



Dorsal root of hooks about the same length as ventral root and prong 32 



32. Dorsal root shorter than prong or ventral root ; hooks generally less than 20 in number 



{range from 10 to 26) ; genital pores unilateral or irregularly alternate ; known only 



in birds Dicranolania.^ 



Dorsal root longer than prong or ventral root ; if rostellum is armed, there are 24 to ^iO 

 hooks present ; genital pores unilateral {on left of segmcnix) ; three trstic.lcs nor- 

 mally present in each segment ; retractile rostellum armed with minute hooklets or 

 rudimentary and unarmed ; eggs with three envelopes ; parasitic in man, ehiroptera, 

 insectivora, rodents, and insectivorous birds ; larval stage in insects or myriapoda. 



Uymenolepis.'' 



33. Hooks on sn<kers aiTiinnod in cirenlar rows on border; hooks on rostellum resem- 



ble a hammer in form and are arranged in a double row; with lour exceptions 

 known only in birds Davainea (p. 194), 35. 



'1893, Amabilia, Diamare, Boll. Soc. Nat. Napoli, 1. ser., VII (1-2), p. 13. August 



28, 1893. Type, Ta-nia lamelligera, Owen, 1835. 

 ? 1896, Diploposthe, Jacobi, Zool. Anzeiger, XIX, No. 505, .June 15, 189G, pp. 268-269. 



Type, Tamia hvvis, Diesing. 

 See Stiles, 1896, Bull. 12, Bureau of Animal Industry, p. 31. From the diagnosis 

 given by .Jacobi I fail to see how Diploposthe differs from Amabilia. 

 -1863, Dipylidium, K. Lkuckart, Die menschlicheu Parasiten, I, p. 400. Type, 



Ta-nia eUiptiea, Batscli, 1786^ To'uia canina, Linua-ua, 1758. 

 1858, " Alyselminthus, Zeder, 1800 pp.,'" of Weinland with Tania cucumerina, 



Bloch, 1782 = 7Vr)nV( canina, Linna'us, 17.5S, as type. 

 1884, Micro twnia, Sedgwick, as subgenus in Claus & Sedgwick, Elementary 



Text-book of Zoology, I, p. 336. Type, Tania cucumerina, Bloch, 1782:^ 



Tania canina, Linmeus, 1758. 

 For species and bibliography sec Diamari's monograi)h (1X93) II Genere Dijiylidium, 

 Lkt., Atti R. Accad. Scienze fisische e nuxtematiche, 2 ser., VI, No. 7, 31 pp., pis. 

 I-III. 

 31873, Cotugnia, Diamari, Boll. Soc. Nat. Napoli, 1. ser., VII (1-2), p. 11. August 



28, 1893. Tyi)e, T<enia digonopora, Pasquale, 1890. 

 See Stiles, 1896, Bull. 12, Bureau of Animal Industry, p. 29. 

 ^1892, Drepanidotwnia, Kailliet, Bull. Soc. zool. France. XVII, p. 116. Type, Ta'nia 



lauceolala, Bloch, 1782. 

 ? 1896, Choanotania, Raili.iet, Rec. m(^d. vet., 8 ser., Ill (5), March 15, 1896, p. 159. 



Type, Tenia infundibuliformis, Goeze, 1782. 

 For species and bibliography of this genus see Stiles, 1896, Bull. 12, Bureau of Animal 

 Industry, pp. .36-45, 60-61. 

 ^1892, Dicranotcenia, Railliet, Bull. Soc. zool. Franco, XVII, p. 116. Type, Tania 



coronula, Dujardin, 1845. 

 For species and bibliography of this genus see Stiles, 1896, Bull. 12, Bureau of 

 Animal Industry, pp. 32-36. 

 •"1858, Hymenolepis,VJKi^i.\i!iT>, Human Cestoides, p. 49, 52. Type, Tania favopunc- 



tata, Weinland, 1858=: Tamia diminuta, Riidolphi, 1819. 

 18.58, Lepidotrias, Weinland, as subgenus of Hymenolepis, Human Cestoides, p. 52. 



Tyy)e, Tania murina, Dujardin, 1S45, proposed 1)y Weinland, but this subgenus 



includes the type of the genus. 

 For species and bibliography of tiie genus see K. Blauchard, 1891. Hist. zool. et 

 mdd. des Tdniades du genre Hyutenolepis, Weinland. Paris. 112 pp., 22 ligs. 



