1916. | T. SouTHWELL: Indian Cestoda. 7 
Family THTRABOTHRIIDAE, Linton, r8gt. 
= Tetrabothridae, Diesing, 1850 (in part). 
Family diagnosis:—‘Taenioidea. Scolex unarmed, without 
rostellum. Suckers with an outwardly projecting auricular 
appendage on the anterior border. Neck short. Segments of 
the strobila, with the exception of the hindermost segments, 
always much broader than long. A single set of reproductive 
organs in each segment. Genital pores unilateral. Genital cloaca 
deep. Cirrus pouch small, and nearly spherical, united with the 
genital cloaca by a muscular cloacal canal. Yolk-gland in front 
ofovary. Eggs with three transparent envelopes. Adult in birds 
and mammals. 
Type-genus :—Tetrabothrius, Rudolphi, 1819. 
Genus ‘Tetrabothrius, Rudolphi, 1819. 
= Amphotercotyle, Diesing, 1863 (type, A. elegans, Diesing, 1863). 
= Prosthecocotyle, Monticelli, 1892 (type, Zaenia fostert, Krefft, 1871). 
= Bothridiotaenia, Lonnberg, 1896 (type, Taenta erostris, Lonn., 1889). 
Generic diagnosis :—Tetrabothriidae. With the characters of 
the family. 
Type-species :—Bothriocephalus macrocephalus, Rudolphi, 1810. 
Tetrabothrius erostris, Lonnberg, 1880. 
ZEV £947 Sterna bergit. Tamblegam, Tf. Southwell. Ten specimens. 
(Tern). Ceylon. 
This parasite has previously been recorded from Ceylon by 
Shipley. 
Synonym :—Taenia tmmerina, Abildg., 1790. 
Literature :-—Shipley, 1903 ; Johnston, 1912; Ransom, 19009 ; 
Fuhrmann, 1908 ; Monticelli, 1892. 
Family DAVAINEIDAE, Fubhrmann, 1907. 
(See Rec. Ind Mus... Vol. 1X, Patt V,, Dec. 19173); 
Sub-family DAVAINEINAE, Braun, 1900. 
Sub-family diagnosis :—-Davaineidae. Suckers armed around 
periphery with several rings of hooklets which are unstable or 
persistent. Uterus breaks down into numerous egg capsules, each 
containing one or more eggs. Para-uterine organs not present. 
Adult in mammals and birds. 
Type-genus :—Davainea, Blanchard and Railliet, 1891. 
Genus Cotugnia, Diamare, 1893. 
Generic diagnosis:—Davaineinae. Segments broader than 
long. Several layers of longitudinal muscles, alternating with 
layers of transverse muscle fibres. A double set of reproductive 
