272 Scientific Intelligence. 
ences, hart ha Ha citations of types, &e. Of rears este. the following 
are new: Zryonia Stim., founded upon a new species, 7. clathrata 
aie extine ‘ from the Colorado Desett; Potahdpyitied Stim., 
ioe ag: 
ora tei to cane to them, but leaves that to be done by others who 
may have an opportunity to study thoroughly “theie softer parts, denti- 
tion, &., Seal determine whether or not they really possess all the char- 
acters of the newly founded groups. 
_ Another commendable feature in this memoir is, that the author has 
the new genera very naturalist must be aware that much of the con- 
fusion in the nomenclature of natural history has arisenefrom the neglect 
of this simple rule in the subdivisions of the group which may after- 
wards take place, some retaining the original name for one > group of the 
ies, and others for others, with no chance for agre Many, 
sateen the maiority, say that, in such cases, the old name "should always 
used for the group jndledige the first species, or in other words, that 
the first me mentioned or ee oma under the old name, should 
regarded as type. Others, however, insist that the original name 
should be dead for the tee nluding the majority of the species 
ribed, or included; wh others contend that the type most 
he 
the right to determine, arbitrarily which shall fetal the old name, and 
which shall receive new ones. Now all such confusion is avoided by 
ie stating which species is recognized as the type in founding a neW 
vie work undef review bears t throughout marks of great care and 
thoroughness. The Smithsonian Institution is doing a good work for she 
advancement of science in publishing the results of “such investigaio™ 
. On the method of flight of os Flying-fish ; by Horace Mass 
(a . letter to F. W. Putman).—I h sa Aina flying-fish to 
ay. They are very abundant, and ies you »may know all about 
them from persons more competent to see and describe than I, yet I ven- 
ture to send you a few notes o nip in my journal. I had s upposed 
at they must acquire some kotiederable momentum below the wee - 
th 
sea it, and for that — vere to see if the motion 
‘aa at motion ‘inisekietate oe 
course; but I also think their motion is kept up by the fins, and 
ed by them. ‘They do not ee 
' 
aay ee See: 
