44 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
individuals the tube becomes longer, narrower, and rolled on itself, and 
the whole length is now about 65 cm., with a diameter of one-fifth of a 
millimetre. All this development appears to be pure loss, for it is im- 
possible that the head of Tsenia can be evaginated, nor can the long 
tube, which has all the characters of the vesicle of a cysticercus, pass 
into the adult. 
These remarkable peculiarities are as yet unknown in Cestofles ; 
at first s'ght the great development of the body of the larva of T. 
Grimaldii may be compared to that of T. crassicollis of the Cat ; but the 
difference between the two species is radical ; in the hitter there is no 
rupture of the recej^taculum capitis such as, in the former, allows of the 
development of the body within the interior of the vesicle. 
Several encysted worms have already been observed in Dolphins ; 
the very curious Stoenotsenia Deljphini of Gervais has some resemblance 
to the cysticercus of T. Grimaldii ; others have reported on the presence 
of true cysticerci, but all these descriptions, with the exception of those 
of Phyllobothrium, are not sufficient for us to be able to recognize the 
animals meant. 
Monstrous Specimen of Taenia saginata.”' — Dr. L. Trabut gives an 
account of a Taenia saginata with six suckers and of a trihedral form, 
taken from an officer who had been in Tonkin. Owing to its form it 
ceases to be a flat worm : a section across a ring is well represented by 
a Y ; all the sexual orifices are situated along the edge which corres2)onds 
to the lower limb. The author considers that he has had to do with 
two worms half united by their male surfaces. Similar anomalies have 
been described in the case of other species of Taenia by Kiichenmcister 
and others, but never before has the head been seen. 
Swedish Cestoda.j — Herr E. Lonnberg gives a systematic account 
of Swedish Cestodes, diagnosing forty species, of which eight are new. 
He establishes two new genera, Tritaphros and Ptyclu bolhriiim, and gives 
a valuable list of 128 hosts with the j)^u’asites he has found in or on 
them, including not only Cestodes, but Trematodes, Nematodes, Acan- 
thocephala. Crustaceans, and others. 
5. Incertae Sedis. 
New and little-known Rotifers.| — Dr. W. B. Burn gives an account 
of Stephanops infermedius, a new species, which appears to stand between 
S. lamellaris and S. muticus, although he thinks it would be better to 
unite the three species. He also has some notes on (Pcistes umhella, 
which he has found in a shallow j)ool on Tooting Common. 
Echinodermata. 
Echinodermata of Deep Water off the S.W. Coast of Ireland.§ — Prof. 
F. Jeffrey Bell gives an account of the echinoderms collected in July 
last by the Eev. W. S. Green. The most important capture was that of 
six specimens of Phormosoma placenta. The author has been able to 
* Arch. Zool. Exper. et Gen., vii. (1889) pp. x. and xi. 
t Bihang Handl. K. Svensk. Vet.-Akad., xiv. (1889) pp. 1-G9 (2 pis.). 
X Science-Gossip, 1889, pp. 179-81. 
§ Ann. and Mag. Nat. Hist., iv. (1889) [ip. 132-15 (2 p!s.). 
