320 General Notes. [ April, 
History. The feature in question consists of branches of minute 
spines of different forms, some resembling long-stemmmed agarics 
or parasols with small shades. The question whether these novel 
shapes are spines or pedicellariz or not, is not regarded by Mr. 
yman as a very important one, ‘since the pedicellaria is only a 
spine peculiarly modified. But it may be said that their supple- 
mentary character and abnormal shape’give these parasol spines 
the position of what used to be carefully distinguished as pedicel- 
lari.” Mr. Lyman has also distributed a preliminary list of the 
known genera and species of living Ophiuride and Astrophytide, 
with their localities, and the depths at which they have’ been 
found; and references to the principal synonyms and authorities, 
Cambridge, December, 1880. The heart of the Stomapod 
Crustacea is said by Claus in Zvologischer Anzeiger to consist of an 
anterior heart-like wider section, and of an elongated many- 
chambered dorsal vessel, the anterior part corresponding with the 
Decapod heart and situated in the region of the maxilla and 
maxillipedes. The dorsal vessel has twelve pairs of venous 
nerve extends along the dorsal side of the dorsal vessel, forming 
a large ganglion ce!l on each chamber. In the same journal 
for November 29, Dr. Krancher writes on the structure of the 
stigmata of insects. He distinguishes five types; of simple stig- 
mata without lips, two forms, the simplest (1) representing a hole 
surrounded by a chitinous ring, and (2) where the stigma con- 
sists of a row of single stigmata surrounde a common 
chitinous ring, and whose tube-like continuations form the 
trachea. Of stigmata with lips, the lips (3) are represented by a— 
it until it dies of weakness, but presumably leaving, like the 
ichneumons that prey upon caterpillars, the vital parts untouched 
until the last. The hag is fitted for its work by its suctorial 
mouth, which is terminal, soft, not provided with jaws, and form- 
ing a round opening when in use, as well as by two teeth on each 
