CESTOIDA. 
431 
VI. CESTOIDA. 
1. Grimm^ O. Zur Kenntniss einiger weniger bekannten Bin- 
nenwiirmer. Nadir. Ges. Getting. 1872, p. 240. 
2. Linstow, O. von. Sechs neue Tsenien. Ardi. f. Nat. xxxviii. 
pp. 35-58, pi. 3. 
3 . . Ueber den Cysticercua Tamics gracMis, eine freie Ces- 
toden-Amme des Barsclies. Ardi. mikr. Anat. viii. pp. 
535-537, pi. 21. figs. 1-3. 
4. Megnin, J. T. Note sur le developpement des Cestoides 
inermes cbez les grands herbivores domestiques. J. de 
TAnat. Phys. viii. pp. 289-296; C. R. Ixxiv. p. 1292. 
5. . Note sur le developpement d’un petit Taenia inerme 
dans Pintestin d’un cheval, et sur les desordres graves qiiMl 
y a causes. Bull. Soc. Centr. Medecine Veterinaire (3), vi. 
pp. 110-115, pi. 
6. Olsson, P. Om Sarcotaces ocli Acrobothrium, tva nya para- 
sit-slsegten fran fiskar. QSfv. Ak. Porh. 1872, no. 9, pp. 
40-44, pi. ii. 
7. Sangalli, G. DelP Echinococco del fegato. Mem. 1st. 
Lomb. xi. pp. 12. 
8. Sommer, F., & Landois, L. Ueber den Ban dcr geschlechts- 
reifcn Glieder von Bothrioccphahis laiuSy Brems. Z. wiss. 
Zool. xxii. pp. 40-99, pis. 4-8. 
Two dissertations, by A. Gunter (Breslau), Ueber die Echinococcus- 
krankheit der Atbmungsorgane,” and G. Marcks (Halle), Ueber Echino- 
coccus im Gehirn,” have not been seen by the Recorder, but have probably a 
pathological rather than a zoological bearing. 
Evolution and Biology. 
Linstow (8) found Taenia gracilisj Zed., in Mergus merganser y and its cys- 
ticerc in the perch. 
Bothriocephalus {Dihothriuni) cordicepSy Leidy (Zool. Rec. viii. p. 453), in 
Hayden’s * Preliminary Report of the United States Geological Survey of 
Montana ’ (Washington : 1872), pt. iv. pp. 381 & 382, figs. 1 & 2, abounding 
in trout in the Yellowstone Lake, Wyoming, U. S. A. The smaller worms 
are contained in cysts adherent to the exterior of the intestines ; but the 
larger individuals, up to 6 inches in length, are imbedded in the muscles of 
the fish. From 5 to 60 were found in each fish infested. 
Zenker, SB. Soc. Erlang, iv. pp. 71 & 87, introduced a single, but per- 
fectly developed, segment of Tcmia mediocanellata into the alimentary tube 
of a young goat; five weeks afterwards, two young cysticercs were found in 
its dorsal muscles ; seven weeks later, when the goat was killed, two more 
2 F 2 
