432 
VEllMES. 
were found in the same place, exhibiting very distinctly the specific characters. 
New experiments on the feeding of dogs with Echinococci of the ox, and their 
evolution into Tcenia echinococcus are recorded, 1 . c. p. 88. 
In the ileum of a young horse which died through rupture of the intestine, 
apparently duo to tlie presence of cysts of considerable size communicating 
with the intestine, Megnin(5) found a considerable number (some in the cysts, 
the greater number fixed to the mucous membrane of the intestine) of imma- 
ture unarmed Tcenice of an unnamed species (?) allied to T. perfoliata^ T. pli- 
cata, &c., but found previously in its perfectly developed sexual state in a mule 
by Baillet. He is of opinion that the eggs are carried out with the faeces and 
swallowed with grass by the horse, that the proscolex (which is armed in 
2\ perfoliatd) makes its way into the muscular layer of the intestine, where 
it is transformed into a polycephalous Hydatid, the increasing size of which 
produces the cysts; through the communication between these and the 
intestine the young scoleces successively emigrate into the intestine, where 
they attain sexual maturity. The whole life-cycle of this tapeworm 
would then be performed in a single host without transmigration. (The tape- 
worm figured is apparently identical with T. perfoliata of the horse.) 
Anatomy, 
SoMMEii and Landois’s treatise (8) is a profound and excellently illustrated 
investigation of the anatomy of the broad tapeworm,” with a review of the 
literature on the subject. 
New forms : — 
Acrobothbidba, Nova familia Cestoideorum bothrio sive acetabulo 
terminal!, corpora articulate distinguenda. Acrobothrium^ g. n. Caput 
inerme, bothrio terminali circular!, a corpore collo discretum. Aperturse 
genitales laterales, masculee femineis postposita3. A. typicum, Olsson (6), 
tab. xi. figs. 6-8, in Lotce vulyaris ventriculo et appendicibus pyloricis. 
Linstow (2) describes shortly and figures a series of new Ttcnice from birds — 
T, pachycephala (Anas histrio7iicd) , T. puncta [Corvtis cor one and nebula) ^ T. 
pigmentata {AQias^narila), T. cuneata (Gallus do7nesticus), T. parviceps (Mei'yus 
se7'rato7')y T, 7iaja (Sitta cu7'opcea)\ also an immature form (T. hepatica) 
encysted in the liver of the rat (Mus decu7na7ius). 
Grimm (1) describes T. sagitta, sp.n., from Cobitis ba7'batula, and T.ambigua, 
Duj., from G aster osteus actdeatus. 
VII. NEMATODA. 
1. Bakody, T. Ueber das combinirte Vorkommen der Trichina 
spiralis im Verdauungskanal der Iluhner. Z. wiss. Zool. 
xxii. pp. 422-427, pi. 34. 
2. Butschli, O. Beobachtungen iiber melirere Parasitcn. 
2. Ueber das Manncheii des Trichosomum crassicauda, B. 
3. Einige Beobachtungen iiber den Eispharagus denudatns, 
Duj., des Leuciscus erythrophthalmus. Arch. f. Nat. xxxviii. 
pp. 236-246, pi. 8. 
