AvuGusT 25, 1889. ] 
It should be further noticed that in nearly 
every instance where the name of an Eastern At- 
lantic species has been adopted for species of our 
Western Atlantic fauna, even in those from 
deep water, Dr. Dall has either changed it or 
given additional varietal names, sometimes only 
for the very insufficient reason of differences in 
size, asin the instance of Kellia suborbicularis 
(Mont.) (p. 889), where only two specimens 
have been recorded from the coast : Thomp- 
son’s Gouldii from New Bedford harbor and 
one from Massachusetts Bay, off Salem, U.S. 
F. C. (Verrill and Bush, 1898). 
Such great dissimilarities exist ‘in the hinges 
of the five figured species referred to the genus 
Erycina as to render it improbable that they 
can be retained in so close generic relation. 
All these doubtful points will doubtless be 
satisfactorily adjusted by Dr. Dall in his more 
extended discussion of the subject, which is to 
appear in the Trans. Wag. Inst., Philadelphia, 
Vol. III., Pt. 5. 
The Lasza rubra Montagu quoted from Ber- 
muda (p. 876) was found there abundantly 
by Professor Verrill and party, 1898. Com- 
pared with specimens from Guernsey it is found 
to have a much more swollen form with very 
large, swollen umbos, and attains twice the 
size of any of our numerous English examples. 
In one valve, anterior to the beak, there is a 
short, deep, socket, not sunken below the sur- 
face of the hinge-margin, but formed by two 
thin, triangular, raised teeth, nearly parallel— 
the outer one next to, and parallel with, the 
dorsal margin, and the inner one, much longer, 
diverging from the beak and curving outward 
from the inner edge of the moderately wide 
margin, the highest point of each being near 
the distal end. In front of this is a small, lit- 
tle prominent tooth on the inner edge of the 
hinge-margin, directly under, but separated 
from, the beak. There is also a similar socket, 
a considerable distance behind the beak, but it 
is longer and the two teeth are less trian- 
gular and but little raised, the upper or outer 
one scarcely discernible ; within, and somewhat 
in front of this, separated and diverging from 
it, and running backward from the beak, is the 
sunken socket, to which a long, conspicuous, 
white resilium is attached. In other words, 
SCIENCE. 
251 
the hinge-margin broadens out distally, form- 
ing a triangular-shaped ledge at the side of this 
inner tooth, which has a concave side in which 
the resilium lies. In the English rubra the 
resilium is amber color and the teeth are not so 
strongly developed as in Bermuda specimens of 
the same size. In the opposite valve of the 
former there are three prominent teeth, the lat- 
teral ones well separated from the dorsal mar- 
gin, which fit into these sockets and a corre- 
sponding resilium-pit. This distinct species: 
may take the name Laswa Bermudensis, sp. nov. 
In the second article Mr. Hedley gives in his 
preface an interesting account of the atoll of 
Funafuti and the positions and conditions under 
which the various forms of mollusks are found, 
calling attention to the peculiarity in their lack 
of development, they being of smaller size than 
the representatives of the species from other 
localities. He also calls attention to the great 
difficulties encountered in preparing his article, 
owing to the great paucity of descriptive ma- 
terial. 
Of the two-hundred and ninety-seven spe- 
cies, besides varieties, enumerated, about thirty- 
seven are described as new. Three new 
genera are also introduced (Obtortio, p. 412, 
type Rissoa pyrrhacme Melvill and Standen; 
Cotumax, p. 486, type C. decollatus sp. nov. + 
and Thetidos, p. 472, type T. morsura sp. nov.). 
The first is probably erroneously referred to: 
Turbonillide, as there is nothing in the descrip- 
tion or figure to suggest such a relation, so that 
a careful study of the animal is needed before 
such a question can be correctly determined. 
The second is placed with the Cerithiide, its. 
nearest ally, Cerithiopsis; while the third is an 
addition to the Mangilliine but seems synony- 
mous with Nassarina Dall (1889). Although the 
few figures given are unfortunately crude and 
coarse, they are of sufficiently large size to 
bring out the characters necessary for identifi- 
cation. 
KATHARINE J. BUSH. 
YALE UNIVERSITY. 
‘Uber die thermo- und piezo-elektrischen Higen- 
schaften der Krystalle des ameisensauren Baryts, 
Bleioxyds, Strontians und Kalkes, des Schwefel- 
sauren Kalis, des Gilycocolls, Tawrins und 
