40 Verm. 
VERMES 
NEMERTEA. 
New Genus and New Species. 
Amphiporus reticulatus , Naples, BOrger (2), n. sp. 
^BalanocephaluSy n. g., for B. pellucidus, n. sp., Naples ; Kennel (2). 
Carinelta desiderata , tubicola , Naples, id. (2). 
Oerstedia aurantiaca, Nice, claparedii , St. Yaast, Plessis, n. spp. 
Brosorochmus bistriatus , Naples, BOrger (4), n. sp. 
Biology, Faunistic. 
Burger (3). Plessis. 
, Histology. 
Burger (2). Burger (5), Nervous System. 
The latter is an important investigation carried out by means of the 
method of Ehrlich. 
Morphology. 
BOrger (4) found that in Nemertes gracilis and Brosorochmus bistri- 
atus , n. sp., the excretory vessels are several centimetres long, instead of 
several milimetres, as in most forms. The excretory system consists of 
much branched canals opening iuto a main vessel on each side, which 
leads to the external pore. The canals are lined by a ciliated epithelium, 
and end in blind club-shaped dilatations, which are also lined by an 
epithelium. Each end-sac is provided with a mass of cilia proceeding 
from the thickened end into the lumen of the sac. This mass of cilia, 
when in full action, has appearance of a single flagellum (Wirnperflamme). 
The excretory canals embrace the lateral blood vessels very closely, but 
never come into open communication with them in the Enopla A basal 
membrane covers the canals, but is absent from end-sacs. Author con- 
siders that the nephridia of Nemertines are genetically different structures 
from those of other Blatyhelminths ) in which the canals consist of per- 
forated cells ending in a single flame-cell ; while in the Nemertines the 
canals and end-sacs are lined by an epithelium consisting of innumerable 
cylindrical cells, and are therefore intercellular instead of intracellular. 
ENTEROPNEUSTA. 
Spengel divides this group into following Genera : — Balanoglossus , 
Delle Chiaje, Btychodera , Eschscholtz. Glandiceps , n. g. ; Schizocardium, 
n. g. 
Development. 
Morgan (1, 2) gives a detailed account of the structure of Tornaria 
(pp. 408-420), its metamorphosis (pp. 420-428), and au account of the 
