ENTOZOA — CYSTICA. 
315 
concludes, that three species of hydatids are present in the bones, viz., 
— 1. Simple serous cysts ; '2. AcephalocystS, or Echinococci, that is, in- 
dependent watery bladders, enclosed in a fibrous covering, which are 
sometimes present in great numbers in one and the same husk ; and 3. 
Cysticercus cellulosce. The author has had the kindness to send to the 
reporter a preparation from the under extremity of a case, in which 
knotty hydatids were very extensively present, but in which the reporter 
has only recognised serous cysts. 
Leuckart found, in the peritonasal parts belonging to the uterus of 
Lepus cuniculus domesticus, ten individuals of a Cysticercus (Zool. 
Bruchst. iii. p. 1), which he looked upon as new, and has named Cyst, 
elongatus, with the following diagnosis : — Capite sub-tetragono ; collo 
nullo ; corpore rugoso, elongato, depress© ; vesica caudali gracili, elongata, 
apice acuminata, corpore parum longiore. From a notice communicated 
to the author by Diesing, a Cysticercus, found by Natterer in the 
Lepus hrasiliensis, must agree with this Cyst, elongatus. A Cysticer- 
cus cercopitheci cynomolgi, which Leuckart found in a cyst of the liver, 
and mentions as a doubtful species, is near Cysticercus tenuicollis. 
Leuckart could not discover the circle of recurved hooks in a Cysticercus 
pisiformis from the liver of a house-mouse; and conjectures, that the 
hooks, as in the Tcenia, had here fallen off from old age. It has been 
announced by Engel, that in an epileptic patient, Cysticerci were found 
in considerable numbers in grooved deepenings of the convolutions of 
the brain, and the muscles of the same patient were also beset with them 
(Schmidt’s Jahrg. 1842, Bd. 53, p. 43). Radius observed a Cysticercus 
in a hydatid of the size of a walnut, in the liver of an old woman, 
which was surrounded by a cartilaginous capsule (ibid. Bd. 34, p. 269). 
Cases of convulsions, madness of swine occasioned by measles, have 
been related by Rehrs (Gurlt and Hertwig’s Magaz. 1842, p. 226). The 
encysted worms, in such swine, occupied almost more space in the cavity 
of the skull than the substance of the brain. 
A view often taken of the origin of the Ccenurus cerebralis, as the 
consequence of preceding inflammation of the brain, has again been 
brought forward by Dominik (ibid. p. 83). 
According to Rocitansky’s observations, acephalocysts are very rare 
in human bones (Handb. der pathol. Anat. Bd. 11, p. 207). They have 
been found in the humerus, tibia, iliac bones, and the diploe of the 
skull, generally in consequence of wounds. Rocitansky has communi- 
cated the following case : — A day-labourer, forty-two years of age, had 
in youth, suffered from swellings of the glands of the throat and shoulder, 
and was afterwards severely affected by syphilis. Four years thereafter, 
a disease of the bones supervened, with gnawing and penetrating pains, 
and in the course of a year he died. The left ilium was changed into 
a fibrous sac, which was filled with acephalocysts (F/cAmococats-bladders) 
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