1870. ] DR. T. S. COBBOLD ON A NEW ENTOZOON. 9 
Buuimuxus pAMarRENsIs, H. Ad. (Plate I. fig. 17.) 
B. testa vir rimata, oblonga, solida, longitudinaliter plicoso-striata, 
plicis obtusis, subarcuatis, albida, interdum strigis corneo-fuscis 
ornata ; spira superne attenuata, apice obtuso, corneo ; anfr. 103, 
convexiusculis, ultimo 2 longitudinis equante ; apertura subovali, 
basi angulata; perist. recto, calloso, marginibus callo junctis, 
columellari dilatato, appresso. 
Long. 24, lat. 9 mill. 
Hab. Damara Land (Coll. H. Ad.). 
This species is allied to B. tauricus, Lang., but differs from it in 
being less rimate, and in the spire being attenuated at the upper part. 
Butimutus pyem£us, H. Ad. (Plate I. fig. 18.) 
B. testa rimato-perforata, ovata, solida, alba, striis longitudinalibus 
et spiralibus minutissimis obsolete decussata ; spira brevi, convexo- 
conica, apice obtuso, sutura impressa; anfr. 6, convexis, ultimo 4 
longitudinis @quante; columella subverticali; apertura ovali ; 
perist. recto, crasso, margine columellari arcuato, dilatato, reflexo, 
perforationem subtegente. 
Long. 13, diam. 8 mill. 
Hab. Damara Land (Coll. H. Ad.). 
DESCRIPTION OF PLATE I. 
Figs. 1, la. Nesta candida, p. 5. 
. Corbula suleulosa, p. 6. 
. Tellina (Tellinella) virgulata, 
6 
1 
2 
3 
p- 6. 
4. Teilidora pusilla, p. 6. 
5. Lucinopsis (Lajonkairia) ele- 
gans, p. 6. 
6. Semele macandree, p. 6. 
7. Chione pulchelia, p. 7. 
8. Loripes decussata, p. 7. 
9. Perna fulgida, p. 7. 

. Limopsis concinna, p. 7. 
. Limea pectinata, p. 7. 
. Melanoides swinhoet, p. 8. 
. Bithynia robusta, p. 8. 
. Rumina (Subulina) teres, p. 8. 
. Helix (Camena) hainanensis, 
p. 8. 
. Pterocyclos hainanensis, p. 8. 
. Bulimulus damarensis, p. 9. 

pygmaeus, p. 9. 
2. Description of a new Generic Type of Entozoon from the 
Aard Wolf (Proteles) ; with Remarks on its Affinities, 
especially im reference to the question of Parthenogensis. 
By T. S. Cosson, M.D., F.R.S., F.L.S. 
On the 4th of November last I received from Professor Flower, 
F.R.S., a small bottle containing some Nematode worms, accom- 
panied by a letter stating that the parasites had been “ found loose 
in the peritoneal cavity of Proteles cristatus.’”’ The mere circum- 
stance that the carnivorous ‘“ host’ had never before been properly 
anatomized, naturally led Mr. Flower to suppose that the worms 
would prove new to science; and this inference could hardly fail to 
be strengthened by the rather uncommon fact of the occurrence of 
hn vr 
