Zoology. 945 
. The ribs are developed detween the myocomata; they are, 
intervertebra 
ribs are originally one-headed and Connected with 
Bb aoni intercentra 
3. All forms and connections of the other ribs can be derived 
_ fom that condition 
4. The lower arches of the caudal vertebre are either formed 
by true ribs, the oldest fishes (Ganoidei, Dipnoi), or by processes 
- of the intercentra (Teleostei, Stapedifera 
_ §. The soo nid between the Dipmcine and the Stapedifera 
isl miss 
N Knie. etineks on the nomenclature of the elements of the 
“bra olumn. 
_ Owen’s names, “ neurapophysis” and “ pleurapophysis,” are not 
omet: the neural and pleural arches are no processes of the 
vertebræ, but are distinct parts. 
two elements Pred ep the neural arch ought to be 
called the “ RnTORES ; :” the two elements composing the pleural 
ach, the “ plenroids 
spines connected with the neuroids ought to be called, 
ne neural spines; those connected with the pleuroids, 
al spines, 
te real centrum of the vertebra ought to be called centrum ; 
ie oo composing it, hemicentra (Albrecht), not 
The “oie intercentrum ought to be preserved. 
the Part of the intercentrum, centrum, or neuroid to which 
capitulum is articulated, may retain the name par apophysis ; 
Part of the centrum or neuroid to which the tuberculum is 
G ape retain the name diapophysis—Dr: G. Baur, New 
onn., 1887. 
N News.—LowER INVERTEBRATES. pr. A.C. Stokes — 
Some more new species of North American Hypotri- 
i in the Annals and Magazine of Natural TEST 
T a recent meeting of the Linnean Society of 
South Wales Mr. John Mitchell called attention to the fact 
of the Australian species of trilobites of the genus — 
aspis differ from the diagnosis of the genus in having the 
(not smooth) and the facial suture discontinuous. 2 
V. Lilljeborg, of Upsala, has worked up the Entomostraca a 
by Dr. Leonard Stejneger in his late expedition to 
Rander“ Islands The results appear in the ages eC 
: c tw $ tet lie 
` glacialis and Diaptomus ambiguus, a d. 
"istatus Kréyer is reported as eased abundant, 
Sad bodies s : 
forming long windrows on the beaches. 
