NO. 1105. PROCEEDINGS OF THE NATIONAL MUSEUM. 219 



Hooks on suckers arranged in several transverse roivs ; hooks of infnndihnlum very 



small (4 n ) arranged in a single row ; known only in Mrds Opliryocotijle.^ 



Hooks on suckers arranged in one median set and two lateral nets ; hooks on rostellian 

 provided with long dorsal root and arranged in a single row : knoirn only in Inrds. 



Echinocotyle.'' 

 Snl) family ? 



34. Anterior extremity of strohila expanded in form of a hammer Finihriaria.^ 



Anterior segments become calciforni and function as psendoscolex Idiogenes.' 



Darainea. 



35. Found in Inrds ; see Stiles, 1S9G, " p. 45. 



Found iu mammals 36 



36. Geuital pores unilateral ; .n, siiiijlo egg in each egg capsule 37 



Genital pores generally alternate; strobila attains 85 mm. or more in length by 



3 mm. in breadth; suckers not iuvaginated; eggs grouped 3 to 15 in each egg 

 capsule. Host: Eastern Jackass hare (Z,epM.s JHe/rt«o/(s) and Cottontail rabbit 

 (L. sylvatieus) I), sahnoni (p. 198). 



37. Suckers (always?) iuvaginated; strobila attains 105 nun. long by 3 mm. broad. 



Host : Arizona cottontail ( L. arisonw) D. retractills (p. 195). 



Suckers not invaginafed 38 



38. Bostellmn armed with double row of about DO hooks, IS /i long ; strobila attains 250 



to 300 mm. long, composed of 500 to 600 segments. Host : Ma)i (Homo sapiens). 



D. madagascarlensis (p. 191). 



Rostellnm large, armed with (f) a single row of numerous minute hooklets ; suckers 



armed with S to 10 rows of hooka. Host: Common Indian Pangolin (Manis peu- 



tadactyla) D. contorta (p. 195). 



COMPENDIUM OF THE PARASITES ARRANGED ACCORDING TO THEIR 



HOSTS. 



In tlie following list are given tlie hosts of the parasites discussed in 

 this paper, so far as they are known to nie. I liave personally exam- 

 ined the species starred (*) for the hosts nnder which they are given. 

 For the name of the collector in each case see text. The nnmbers given 

 with the names of the hosts are those of von Linstow's Compendinm 

 and Nachtrag. The geographical distribution refers to the host. One 



'1870, Ophryocotyle, Friis, Videnskab. Meddel. fra den Naturhist. Foren. Kjoben- 



havn [aar 1869], 1870, pp. 121-124. pi. I. Type, Ophryocotyle proteus, Friis, 



1870. 

 R. Blauchard gives the date as 1869, Braun gives it 1870. Original not at my dis- 

 posal. For species see Stiles, 1896, Bull. 12, P>ureau of Animal Industry, p. 56. 

 '^1891, IJchinocofyle, R. Bl.\nchau1), Bull. Soc. zool. France, IV, p. 423. Type, A'. 



rosseteri, R. Blanchard, 1891. 

 ^1802, Fimbriaria, Frolich, Der Naturforscher, XXIX, ]>p. 13-14. Type, Totiia 



malleus, Goeze, 1782. 

 1850, lihynchotania, DiEsiN(f (as section or subgenus of Tamia), Systema Helmin- 



thum, I, p. 521. Tyjje, Tamia malleus, Goeze, 1782. 

 1892, Epision, Lixton, Proc. U. S. Nat. Mus., XV, p. 100. Type, Epision plieatus, 



Linton, 1892. 

 ■*1868, Idiogenes, Kkabbe, Videus. Meddel. fra d. X'aturhist. Foren. Kjobenhavn (for 



Aaret 1867), 1868, pp. 122-126. Type, Idiogenes oiidis, Kit.vuBE, 1868. 

 ^ Stiles, 1896, Report upon the Present Knowledge of the Tai^eworms of Poultry, 



Bull. 12, Bureau of Animal Industry, U. S. Department of Agriculture. 



