DIBOTHRIOCEPHALUS LATUS 2IQ 



toxins produced by the worms and absorbed by the host. There 

 is no danger of auto-infection, as the cysticercus stage lives only 

 in fishes, not in warm-blooded animals. The case reported by 

 Meschede 1 (ova of Dibothriocephalus latus in the brain of a man who 

 had suffered from epilepsy for six years) is differently interpreted. 



Human beings, like other hosts, can only acquire the broad 

 tapeworm by ingesting its plerocercoids with the previously men* 

 tioned fresh-water fishes; the opportunity is afforded the more 

 readily for such infection by the fact that not only do the lower 

 classes not pay sufficient attention to the cooking of fish, so that 

 all the larvae that are present may be killed, but that in 

 certain localities the custom exists of eating some parts of these 

 fishes in a raw condition ; even the mere handling of the usually 

 severely infected intermediary hosts may occasionally cause infec- 

 tion. This plerocercoid is as well known as the cysticercus of the 

 pig (Cysticercus cellulosce) from which it differs materially in appear- 

 ance. In Germany the occurrence of the plerocercoids of Dibothrio- 

 cephalus latus has been confirmed in the pike, miller's thumb and 

 perch of East Prussia, and more particularly in those taken from 

 the inland sea of Courland. 



LITERATURE. 



A. Anatomy : 

 ESCHRICHT, D. F. Anat.-phys. Unters. iiber die Bothrioceph. (Nov. Act. Ac. 



Caes. Leop. ; Carol, nat. curios., 1841, xix., Suppl. ii.) 



STIEDA, L. Zur Anat. d. Bothr. latus. (Arch. f. Anat. u. Phys., 1864, p. 174.) 

 BOTTCHER, A. Stud. iib. d. Ban d. Bothr. latus. (Arch. f. path. Anat., 1864, 



xxx., p. 97 ; 1869, xlvii., p. 370.) 

 SOMMER, F., and L. LANDOIS. Beitr. z. An. d. Plattw. I. B. latus. (Z. f. w. 



Zool... 1872, xxii., p. 40.) 

 NIEMIEC, J. Untersuch. iib. d. Nervensyst. d. Cestoden. (Arb. a. d. zool.-zoot.- 



Inst., Wien., 1886, vii., p. i.) 

 B. Embryonal development : 

 KNOCK, J. Die Naturgesch. d. br. Bdws. mit bes. Beriicks. sein. Entw. (Mem 



Ac. d. sc. de St. Petersbourg, 1862 [7], v., No. 5.) 

 Journ. de 1'anat., 1879, vi., p. 140. 

 BERTOLUS. Sur le devel. du Bothrioc. de 1'homme. (C. R. Ac. sc., 1863, Ivii., 



p. 569.) 

 SCHAUINSLAND, H. Die embr. Entw. d. Bothr. (Jen. Zeitschr. f. Naturw., 1885, 



xix., p. 520.) 

 C. Infection : 

 BRAUN, M. Zur Frage der Zwischenwirth. v. Bothr. latus. (Zool. Anz., 1881, 



iv., p. 593: 1882, v., pp. 39, 42, 194; 1883, vi. p. 97.) 

 Bothr. lat. u. seine Herk. (Arch. f. path. Anat., 1883, xcii., p. 364.) 

 Zur Entw. d. br. Bandw. Wiirzb. Stuber., 1883. 

 KUCHENMEISTER, F. Wie steckt sich d. Mensch mit B lat. an ? (Berl. klin. 



Wchschr., 1885, xxii., pp. 505, 527.) 

 BRAUN, M. Salm oder Hecht ? (Ibid., p. 807.) 



1 Meschede,. Tagebl. der 45 Versammlung der Naturf. u. Aerzte in Leipzig, 1872, 

 p. 186 ; Arch. /. Psych., ii., p. 501 : Allgem. Zeitschr. f. Psych., xxx?, p. 109. 



