DAVAINEA ASIATICA 233 



LEUCKART, R. Ueber T. mad. (Verhandl. d. D. Zool. Ges. I. Leipzig, 1891 



p. 68.) 

 DANIELS, C. W. T. demerariensis. (Brit. Guiana med. Ann. Hosp. Rep., 1895 ; 



The Lancet, 1896, ii., p. 1455.) 

 BLANCHARD, R. Le Dav. mad. a Guyane. (Bull. Ac. med., 1897 [3]> xxxvii., 



P- 34-) 

 BLANCHARD, R. Un cas ined. de Dav. mad. consid. sur le genre Davainea. 



(Arch, parasitol., 1899, ii., p. 200.) 



2 Davainea (?) asiatica (v. Linst.) 1901. 

 Syn. : Tcenia asiatica, v. Linstow. 



There exists only one headless specimen of this species, 

 which is not quite adult and which is preserved in the Zoological 

 Museum of the Imperial Academy of Science in St. Petersburg. 

 It came from a human being and was found by Anger in Aschabad 

 (Asiatic Russia, near the Northern frontier of Persia). The specimen 

 measures 298 mm. in length. The breadth anteriorly is only 0*16 mm., 

 the posterior part measures 178 mm. across. The number of segments 

 is about 750. The genital pores lie on the same lateral border ; 

 the testes are globular and lie in a dorsal and ventral layer in the 

 medullary layer ; the cirrus pouch is pyriform, 0-079 mm. in length, 

 and 0*049 mm. in breadth ; the female glands lie in the forepart 

 of the segments, the ovary reaching to the excretory vessels ; the 

 vitellarium is small and round. The vagina has a large fusiform 

 receptaculum seminis ; the uterus breaks up into 60 to 70 large, 

 uneven, ovarian follicles. 



LITERATURE. 



LINSTOW, v. Taenia asiatica, eine neue Taenie d. Mensch. (C. f. B., P. u. I., 

 1901 [i], xxix., p. 982.) 



Gen. 6. Tcenia, L., 1758. ] 



Taeniidae, usually of considerable length, the mature segments of which 

 are much longer than they are broad. The scolex has a rostellum and 



1 The Greeks teamed the tapeworms eA/ii8es TrAarefoi, more rarely 

 (= fascia) ; the Romans called them tcenia, tinea, tceniola ; later lumbrici, usually 

 with the addition lati, to distinguish them from the Lumbrici teretes. The pro- 

 glottides were called Vermes cucurbitini ; the cysticerci x A C ai (hailstones), later 

 hydatids. Plater (1602) was the first to differentiate Tcenia intestinornm (= Both- 

 riocephalns latus), amongst the Lumbrici lati of man, from Tcenia longissima ( Tcenia 

 solium). The term saginata was already used by Arnoldus Villanovanus, who 

 lived about 1300; and, according to him, it signifies " cingulum " (belt, chain); 

 while N. Andry, in 1700, traces this word from " solus," because the worm 

 occurs in man alone. Leuckart and Krehl derive the word " solium " from the 

 Syrian " schuschl " (the chain), which in Arabian has become "susl" or " sosl," and 

 in Latin has become " sol-ium." What Linne described under the term Tcenia 

 saginata was really Tcenia solium ; the latter was first distinguished by Goeze, but 

 was forgotten until Kiichenmeister, in 1852, again called attention to the differences. 



