136 Scientific Intelligence. 
I will close this long letter with one observation upon Crustacea, 
which may have a more immediate interest for you, if you have not 
yet noticed the fact yourself. On my return from Florida two years 
ago, I noticed among many specimens of Lupa dicantha, one in which 
the tail presented a triangular form intermediate between thai of the 
male and that of the female. Unable to ascertain from a single speci- 
men whether it was a mere variety or perhaps an improperly developed 
female, I awaited another opportunity for a fuller investigation, which 
the market of Charleston, 8. C. afforded largely during the ee gi of 
February last, when | ascertained that that form was at times as co 
mon in the market as either the males or the females, and cae carol 
anatomical examination, I satisfied myself farther, that these specimens 
matter, clearly indicated that they are imperfectly developed females, a 
kind of neuters among crabs, the great number of which leads to the 
adie that they are not without function in the cad economy of 
mals. The tail is soldered to the carapace, the last joints ‘es 
at pics the alimentary canal terminates, being moveable. At the 
same time males and females were dissected, and showed the sexual 
for similar conditions in other species, | found in the collection of Pro- 
fessor L. Gibbes, —— « oe Sribrerias and of L. Sayi with the 
same conformation of their 
1 cannot help returning as pets fis oe to say, that I have now twenty 
species of Lepidosteus from the United States in my collection, a good 
ip che cpt which to base a revision of the fossil fishes. 1 could 
y how many other new things I have collected, for I have aie 
on Spethed | half my packages.’ 
VY. Astronomy. 
. New Planets, (21).—On the evening of the 5th of April, 1853, Pro 
rea Gasparis of Naples, discovered a new planet in the conden 
Leo, in R.A. about 11 4™ and Decl. 6° 50’. It cneges a star of the 
12th magnitude. The following elements were computed by Messrs. 
Forster and Kriiger of Bonn, from observations at No piei; April 6 and 
13, and Bonn, April 27 and Ma ay 10. 
Epoch, 1853, ge 10°431400, M. T. Berlin 
Mean anomaly, 341° 52/ 26”- ‘3 Mean a 
ong. ase. node, << oe 32 26 35 3}. 1853-0 
‘“* perihelion 44 2 
Angle between perih. and node, Ist “6° 8 9 
Inclination, “0 
Angle of excentricity, - 14 21 14 2 
Log. of se ie major, = - 0561038 
mean daily motion, - 2708450 
2, (25)—On the 6th of April, M. Chacornac, at Marseilles, discovered 
another planet which M. Valz proposes to call Phocea. It appears 
like a star of the 9th magnitude, and of a bluish color, Comparison 
it 
