25 
Genital orifices 
part | line. 
Hab. 
Mus. 
? Length about 23 inches, breadth at broadest 
? Collected during the Euphrates expedition. Brit. 
Genus BoTHRIOCEPHALUS. 
1. BoruriocePHALus ANTARCTICUS. (Annulosa, Pl. XXXI. 
fig. 4.) 
Bothriocephalus antarcticus, Baird, Cat. Entoz. Brit. Mus. 90. 
Head conical, elongated, smooth, with two lateral opposite fossettes. 
At the lower margin of each fossette there are two small rounded 
projecting lobes. Body rounded; from the neck someway downwards 
it is quite round or cylindrical, and the articulations are very 
numerous and very small, appearing like mere ridges across. Lower 
down, the body becomes flatter and the joints larger and more deve- 
loped ; lower margin thin. An impressed line runs along the centre 
of the body through its whole length. Length about 9 inches, 
greatest breadth of body about 3 lines. 
Hab. In the stomach and intestines of a Seal caught about and 
within the Antarctic Circle. Collected during the late Antarctic 
Expedition. Brit. Mus. 
EXPLANATION OF THE PLATES. 
Pu. XXX. 
. Ascaris levissima, Baird :—nat. size. 1a. Head :—magnified. 
eal 
Fig. 2. Mermis rigidus, Baird :—nat. size. 
Fig. 3. Gordius violaceus, Baird :—nat. size. 3a. Portion of body :—magnified. 
Fig. 4. Gordius pustulosus, Baird :—nat. size. 4a. Portion of body :—magnified. 
Fig. 5. Gordius spherura, Baird :—uat. size. 5a. Portion of body :—magnified. 
Fig. 6. Gordius fasciatus, Baird :—nat. size. 6a. Portion of body :—magnified. 
ad 
. Pentastoma annulatum, Baird :—nat. size. 7a. Head :—magnified. 
Pu. XXXI. 
. 1. Tenia calva, Baird :-—nat. size. 1a. Head :—magnified. 
. Tenia Zederi, Baird :—nat. size. 
- Tenia faleiformis, Baird :—nat. size. 3a. Head :—magnified. 
. Bothriocephalus antarcticus, Baird :—nat. size. 4a. Head :—magnified. 
ee 
seed 
Pope 
2. DrscripTion or THE ANIMAL OF CYCLINA SINENSIS. 
By Dr. Jounw Epwarp Gray, F.R.S., V.P.Z.S. 
The description of this animal was written some ten or twelve 
years ago, from a specimen kindly given to me by Mr. John Reeves, 
to whom we are indebted for the knowledge of the greater part of 
the animals of China and Japan now known to zoologists. 
The animal in most particulars agrees with that of the genus Do- 
sinia, next to which I proposed to place it, in my paper on the 
arrangement of the genera of Veneride, published in the ‘ Annals 
and Magazine of Natural History’ for January 1853. 
M. Deshayes regards Venus Chinensis as the type of the genus 
