ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 161 
ursinus ; and gives a systematic diagnosis of the genus Bertia and the 
new genus Linstowia. 
All the forms hitherto described satisfactorily from monotremes and 
marsupials belong to the sub-family Anoplocephalinse, with the three 
genera Moniezia , Bertia, and Linstowia. There are interesting parallels 
between the species found in non-placental and those in placental hosts 
of similar habit. 
New Genus of Tseniadae.* — Dr. M. Lube has studied various species 
of tapeworms found in lizards. He refers them to a new genus Oocho- 
ristica, and gives the following diagnosis : — Unarmed Tseniadae, without 
a rudimentary rostellum ; without axial “ Muslcelzapfen ” ; with marginal 
irregularly disposed genital apertures ; and with a very rapid modification 
of the uterus, of such a nature that in the ripe proglottides the ova are 
found imbedded in the parenchyma. 
New Cestode from Varanus.j — Herr E. Riggenbach describes Scy- 
phocepJialus bisulcatus, g. et sp. n. from Varanus salvator. It has three 
suckers, one terminal and two peripheral ; the strobila is distinctly 
jointed ; the genital apparatus is closely like that of BotJiriocephalus ; 
the genital openings are median and peripheral. 
Unidentified Eggs.J — Dr. T. Kanamori reports various cases where 
the eggs of some unidentified parasite were found associated with dis- 
eased conditions of the liver, the rectum, and the cerebral cortex in man. 
The same eggs seem to have been seen in five cases, but there was no trace 
of the parent animal. The author is on the outlook for a new parasite. 
Tetracotyle Petromyzontis.§ — Mr. H. W. Brown found large num- 
bers of this Trematode in the brain-cavity of the lamprey. It is, he 
says, a remarkable fact that a vertebrate should live on, apparently 
without discomfort, whilst its brain is packed with hundreds of flukes. 
It may be doubted, however, whether our methods of observation arc 
adequate to estimate the degree of cerebral comfort in a lamprey. 
Parasite in Frog’s Eye.|| — Herr Groenouw observed a small appa- 
rently living body in the vitreous humour of the frog’s eye, but did not 
examine it microscopically. From the description Prof. M. Braun con- 
cludes that the parasite was Diplostomum rachiacum (= Tylodelphys 
rhacidis ). 
Incertse Sedis. 
Some Points in the Morphology of Enteropneusta.1T — Dr. A. Willey 
suggests a theory of gill-slits according to which these arose in the 
interannular depressions, while the gonads were disposed in zones corre- 
sponding with the epidermal annulations. The primary function of the 
gill-slits was the oxygenation of the gonads, their secondary function 
being the respiration of the individual. In most cases the gonads have 
been secondarily emancipated from the gill-clefts in correlation with the 
* Zool. Anzeig., xxi. (1898) pp. 650-2. f Tom. cit., pp. 565-6. 
+ MT. Med. Facultat Univ. Tokio, iv. (1898) pp. 145-8. 
§ Quart. Journ. Micr. Sci., xli. (1899) pp. 489-98 (1 pi.). 
||’ Klin. Monatsbl. Augenheilkunde, xxxvi. (1898) pp. 60-62, 85-92 (1 fig.). 
See Zool. Centralbl., v. (1898) p. 842. 
H Proc. Cambridge Phil. Soc., x. (1899) p. 37. 
