SCOLECIDA. 
607 
Seidel (1. c.) notices cases of the occurrence of Cysticercus and Echino- 
coccus in the human subject. 
Nettleship (I, c.) mentions having fed a dog on Echinococci from a sheep, 
and in forty-seven days finding several thousand specimens of the young 
Tccnia in the intestines. Some remarks are also added on the anatomy of 
the sexual organs of this tape^vorm. 
Foot records, under the title of Entozoa from some animals in the Royal 
Zoological Gardens, Dublin,” the occurrence of a species of Bothriocephalus 
in the polar bear, and mentions many -well-known facts about the Taeniad 
worms (Proc. Dubl. Nat. Hist. Soc. vol. iv. pp. 201-207). Under the head of 
further observations on Entozoa (1. c, p. 212-210) the author mentions the 
occurrence of Cysticerci in a Calliihrix and in a Russian rabbit. The species 
are not given. Vide also Dubl. Quart. Journ. Scien. January 1866, pp. 42-48, 
& 62-67. 
Bothriocephalus. Krabbe describes the following new species : — B, fuscus^ 
1. c. pp. 27 & 28, pi. 6. figs. 80-88 (structure), and pi. 7. fig. 112 (ovum) from 
the dog in Iceland, with 2 varieties or doubtful species, namely, B. reticu- 
latus, 1. c. p. 29, pi. 6. figs. 89-94 (structure) and pi. 7. fig. 113 (ovum), and 
B. dubius, 1. c. p. 30, pi. 6. figs. 96-100 (structure) ; B. lanceolatus, 1. c. p. 34, 
from Phoea harhata\ B. eleyans, ibid., from Phoca cristata) B. variahilis, 
ibid., from P. cristata ; B. fasciatus, 1. c. p. 36, from Phoca hispida j and B. 
shnilis, ibid., from Canis layopus. 
Trematoda. 
Wagener (1. c.) describes the sporocyst and redia of a new trematode 
larva, provisionally named Cercaria cystophora (p. 146), from the liver of a 
species of Planorbis, accompanied with excellent figures. 
Pseudocotyle squatmee, nov. gen. et spec., Deneden et Hesse (M(5m. Acad. 
Sc. Lett. &c. Belg. xxxv. 1866, p. 11, pi. 2). This trematode worm was 
found living as a parasite upon Squatina anyelus at Ostend in August 1864. 
The genus may be characterized as having no suckers on the side of the 
mouth, and the posterior sucker of the body very variable both in form and 
size — this sucker having neither rays nor hooks. The intestine branching, 
the contractile vesicle of the excretory system opening on the side, whereas 
the orifices of the sexual glands open in the median line. The ova are large 
and without filaments. This genus has aflinities with Tristonia, being in fact 
a Tristoma without buccal suckers, and minus a rayed posterior sucker. The 
new species is fully illustrated in plate 2. 
Acanthocephala. 
Echinorhynchus porriyens, from the duodenum of Balcenoptera rostrata, is 
described by Barker. Proc. Dubl. Nat. Hist. Soc. iv. pp. 293-294. 
Nematoidea. 
Development of the Nematode Worms . — Leuckart (/. c.) gives 
a very detailed aeeomit of what is known, cliiefly through his 
own researehes, on the development of the round worms, not, 
however, speeially referring to Trichina. There are numerous 
Nematoda in which the emigration of tlie embryos from the ori- 
ginal host not only occurs regularly (not the case with Trichina) ^ 
