NEMATOHELMINTHES. 
Verm. 7 
Observations are also made on Sphcsrularia homhi (p. 242, fig. 35), and 
a Nematode larva of very similar character is described ; on the embry- 
onal and larval forms of Ascaris communis (p. 238), and on various other 
species already known. 
Chatin (Mem. Soc. Biol. 1877 [1879]) describes Ascaris satyri. sp. n., 
from the orang (not the same as A. lumhricoides, as is ordinarily sup- 
posed), pp. 384-387 ; and points out {tom. cit. p. 266) that A. Icptodcra^ 
Rudolphi (from the lion) is distinct from A. mystax (from the domestic 
cat). 
Filaria otarice, sp. n., Chatin, tom. cit. p. 204 (from Otaria stelleri). 
DocJimius halsami, sp. n., Parona & Grossi (Rend. 1st. Lomb. x. [1877] 
pp. 190-195). 
Galeb (26) forms a new sub-genus Helicothrix (pp. 14-16 of separate 
copy), found in the Hydrophilidm ; and describes the following new 
species: found in the Blattidce, 0. blatticola (p. 11, pi. xx.), 0. kunckelli 
(p. 12, pi. xxiii.), 0. mgyptiaca (p. 12, pi. xxv. figs, 1 & 2), 0. panesthice 
(p. 13, pi. xxvi. figs. 5-7), 0. heterogamice (p. 13, pi. xxvi. fig. 9) ; in 
the Hydrophilidoit 0. hydroi (p. 15, pi. xxv. figs. 1-7), 0. hydrohii 
(p. 15). 
T. S. Cobbold points out (Veter, li. p. 85) that TricJionema arcuatnm is 
the young of Strongylus tetra^canthus. 
Krabbe (29) describes Ascaris decipiens^ sp. n. (p. 45) and A. cono- 
cephalus, sp. n. (p. 49). 
Anatomy and Physiology. 
Galeb’s (26) observations illustrate the fact that different insects, 
though similar in habit, may be inhabited by different parasites ; in the 
ova, which are very transparent, the germinal vesicle does not disappear 
at the time of segmentation, but elongates or divides, and that previous 
to the same phenomenon in the egg. The generative organs appear to 
be formed by the proliferation of a cell in the abdominal region, and not 
by the division of primitive cells into ovarian and investing cells. He 
believes that every intermediate stage may be made out between the 
Polymarii and Meromyarii, The eggs first laid give rise to males. 
Trichinosis in Badgers ; Veter. Journ. vii. p. 352. 
Manson’s paper from the Custom’s Gazette on ‘‘ Chinese Hmrnatozoa*' 
is reprinted in Veter. Journ. vi. pp. 115-121, 262-267 ; Da Silva Lima’s 
paper on Hcematozoa is translated in Veter, li. pp. 88-96. 
Chatin (C. R. Ixxxvi. p. 974 ; Ann. N. H. 5, ii. p. 108) describes in an 
Agamonema a rare form of hepatic organ, which is a differentiated gland 
instead of being merely a cellular layer or a collection of small coeca. 
Cobbold (25) gives a very complete bibliographical list of papers, 
some of which were only published in 1878. 
Chatin (M^m. Goc. Biol. 1877 [1879] p. 278) describes some simple 
muscle-cells, as found in a Nematoid of a new (unnamed) genus parasitic 
in Callicthys. 
The second case recorded of the direct relation of a Nematoid parasite 
to an insect and a mammal is given by Galeb (27). 
