66 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
a blood-space. The author gives a detailed description of the complex 
structure, but the important point is his demonstration or corroboration 
of the fact that the funnel is the anatomical and physiological end- 
organ of the nephridium. 
N emat ohelminthe s . 
Anguillulidse in Orchids * * * § — Dr. J. G. de Man describes three 
species of Anguillulidse, observed in diseased pseudo-bulbs of tropical 
orchids. Most of the pseudo-bulbs belong to the species which is called 
Calanthe Veitcliii, which is itself a hybrid form cultivated at Chelsea, so 
that Dr. de Man’s first supposition of the importation of these worms 
from the tropics is highly improbable. The first species described is 
new, and is called Aphelenchus tenuicaudatus. This species may, at 
first sight, be distinguished from all other species of the genus hitherto 
observed in Europe by the elongated, slender, finely terminating tail. 
In the Australian species, however, described by Mr. Cobb, under the 
name of A. longicaudatus , the tail-end is likewise hair-like, but it differs 
in the situation of the vulva. The second species is identified as 
Bhabditis curonata , but like many other writers, Dr. de Man finds a want 
of exactness and completeness in Cobb’s description, so that he is not 
quite certain that the identification is correct. The species was origi- 
nally discovered by Cobb in the roots of banana plants in the Fiji 
Islands. The third species is called B. oxycerca ; numerous individuals 
of this species, both male and female, have been found, and it resembles 
somewhat B. teres, but it is distinguished from all other species by the 
quite different distribution of its eight bursa-ribs, and by some other 
characters which the author enumerates in full detail. This species 
appears to be viviparous. 
Development of Strongylus paradoxus.f— Herr Hs. Spemann has 
followed the development of this common parasite of the pig, and con- 
firms the results which Boveri reached in regard to Ascaris megalocephala. 
Of the first two blastomeres, one contains almost all the yolk, which 
makes orientation easy. The cell fre>e from yolk forms ectoderm only, 
and the greater part of it ; the other forms endoderm, mesoderm, and 
part of the ectoderm. The germ-cells belong to no layer, but are 
distinct from an early stage. 
New Gordiidse.J - Hr. F. Bomer gives an account of the Gordiidse 
in the Hamburg Museum, including Gordius aquaticus L. ; G. tolosanus 
Dujardin ; G. molaceus Baird ; G. aeneus Villot ; G. f ulgur Baird ; and 
G. longissimus sp. n. (132 cm. in length); Chordodes pilosus Mobius ; 
Gh. bouvieri Villot; Ch. liguligerus sp. n. ; Ch. variopapillaius sp. n. ; 
and Ch. hamatus sp. n. 
Acanthocephala in Beptiles.§ — Dr. A. Sabbatini has studied the 
Acanthocephala occurring in the reptiles of the Campagna, and finds 
six species variously distributed in nine snakes and lizards. 
* Proc. and Trans. Liverpool Biol. Soc., ix. (1895) pp. 7G-94 (3 pis.), 
f Zool. Jahrb. Abth. Anat., viii. (1895) pp. 301-17 (5 ids.). 
t Tom. cit., pp. 790-803 (1 pi.). 
§ Ricercbe Lab. Anat. Roma, iv. (1894) pp. 205-23 (1 pi.). 
