38 Verm. 
VERMES. 
the stomach, and in their place is a rich reticulum of blood-vessels. 
Describes intracellular digestion (pp. 525-527). The food of Phoronis 
consist chiefly of Diatoms and Protozoa. Description of mesenteries, 
diaphragm, and body-cavities (pp. 528-534). In addition to usual main 
and lateral mesenteries, author describes a pair of “Nebenmesenteria ” in 
P. psammophila. The Nephridium (pp. 534-539) of Phorqnis is what 
Hatschek calls a Metanephridium, since it serves both as an excretory 
organ and as a genital duct. Vascular system (539-549). The larger 
vessels possess layers of circular and longitudinal muscles, a peritoneal 
epithelium outside, and an endothelium inside. Author brings evidence 
to show that the red blood-corpuscles of Phoronis are derived from the 
endothelium. Nervous system (pp. 549-551). The lateral nerve of Cald- 
well does not possess a lumen. 
Lophophoral organs. Sexual organs (pp. 551-559). Systematic position 
of Phoronis (pp. 5G0-564). Author sums up in favour of a relationship to 
the Polyzoa, although he does not consider it to be so near that Phoronis 
can be classed as an aberrant form of Polyzoa. Calls attention to fact 
that in a young Phoronis , just after the metamorphosis, there is only one 
mesentery, viz., the “ Hauptmesenterium,” which passes off at the end of 
the body into a funiculus. 
Ward describes a cerebral organ in Sipunculus nudas, consisting of a 
canal opening to exterior in dorsal middle line, just behind the tentacular 
fold, and extending backwards to anterior ventral surface of brain, where 
it ends blindly with a swollen extremity. Author suggests that this 
organ results from the fusion of the two ciliated pits described in the 
larva by Hatschek. Giant cells and giant fibres are absent from the 
nervous system of the Sipunculids in contrast to the Echiurids. 
ROTIFERA. 
New Genus, and New Species and Varieties. 
Anurcea procurva, Ascension, scutata , Brisbane, Tiiorpe, n. spp. 
Brachionus % dorcas , Gosse, var. spinosus , n. var. B. forficula , Galicia, 
Wjerzejski (1) ; B.furcululus ) Cape of Good Hope, Thorpe : n.spp. 
Callidina lutea i russeola , pp. 2-33, miilleri , holzingeri , p. 44, lejeunice , 
p. 44, Zelinka, n. spp. 
* Dinops , n. g., for D. longipes , n. sp., Guildford, Western (2). 
Distyla depressa , Riv. Lea, musicola t Eppiug Forest, Bryce, n. spp. 
Floscularia torquilobata, Queensland, Thorpe, n. sp. 
Qastropus hudsoni , Black Forest, Imiiof (1), n. sp. 
Lacinidaria natans , Middlesex, Littleton, Western (2), n. sp. 
Mastigocerca cylindrical Black Forest, Imhof (1), n. sp. 
Monoslyla arcuata , Eppiug Forest, Bryce, n. sp. 
Notommata cuneata ) Devonshire, Thorpe, n. sp. 
Pleurotrocha grandis , Wandsworth, Western (1), n. sp. 
