6 Verm. 
VERMES. 
III. — Hoplonemertini. 
Fam. Amphiporidce. 
Fam. Tetrastemmidm. 
Fam. Nemertidw. 
An analytical and a phylogenetic table are given. It is shown that the 
genus Lobilahrum, De Blainville, was “ established on a specimen the 
tip of whose snout had been abnormally severed by an oyster.” The 
number of European species of Nemertini is stated to be 67. 
Anatomy, Development, &g. 
Hubrecht (8) gives a brief summary of his anatomical results ; he finds 
a dorsal median nerve-cord, in some a transverse commissure at the caudal 
end, the whole of the nervous tissue is impregnated with haemoglobin ; 
he also noted indications of metamerism. 
E. O. Taschenberg (28) enters into a detailed account of the anatomy 
of Tristoma papillosum and T. coccineum. 
The observations of Lang (10) were made on a transparent Plauarian 
(P. graffi^ sp. n.) ; towards the middle of the body he found a rather large 
bilobed nervous knot, consisting of fibrous bands and ganglion-cells ; it 
gives ofl: a large number of nerves, ten or eleven being counted on either 
side of the middle line ; in this latter there runs an unimpaired and 
thinner nerve ; fine anastomosing nerve-filaments connect the nerve- 
trunks with one another. The brain lies in a pyriform “lacuna.” 
Other marine Planarice only differ in details of size, &c. No circulatory 
or water- vascular system was detected. 
Geddes (2) has investigated the green colouring-matter of Convoluta, 
and finds that in sunlight gas is evolved by them, of which 45 to 55 per 
cent, is oxygen ; large quantities of vegetable starch can be obtained from 
their bodies, and the ash contains iodine ; they may be called vegetating 
animals. Hhythmically contractile pseudopodia were observed in the 
ectodermal cells; the term “ sagittocysts ” is suggested for the rod-like 
bodies in the Planarian integument ; the chlorophyll is diffused through 
the protoplasm of the containing cells, and is not collected into granules. 
Observations made on Bonellia did not demonstrate the presence of 
chlorophyll. 
See also E. Ray Laiikester, Q. J. Micr. Sci. xix. pp. 434-437. 
According to Graff (3), Planar ia linmli has the lens of the eye made 
up of a number of cells, the longitudinal nerve-trunks are well developed, 
and are united at the posterior end, above the sucker, without any 
diminution in size. Development is effected without any metamorphosis, 
and within the cocoon ; each cocoon contains from two to nine embryos, 
’ and is attached by a stalk to the gill- lamella of the King-crab. 
Vejdovsky (29) finds in Stenostomum leucops, auctt., an oval gland, lying 
above the water- vessels in the pharyngeal region, which opens behind the 
cerebral ganglion ; he looks upon its orifice as homologous with the 
cephalic pore of the OligocJiocta. The Stenostomidoi among the TurheU 
laria are regarded as most near to the Amedullate Oligochmta. 
