vaa 
1883. ] Zoölogy. 555 
and Claus, I have seen drawings of the developmental stages, 
from the protozoéa onward, made by Mr. Alexander Agassiz at 
the Tortugas islands in 1881, and by Mr. J. W. Fewkes, at the 
Bermudas, in 1882. No observer has re-discovered Müller's nau- 
plius; yet in the light of our knowledge of the development of 
Mysis, Euphausia and Lucifer, I see no good ground for refusing 
toaccept Miiller’s reasons for believing his nauplius and zoéa stages 
to be parts of one life-history.— Walter Faxon, Cambridge, Mass., 
March 9, 1883. 
Discovery oF Eurypauropus 1N Europe.—Dr. R. Latzel, of 
Vienna, writes us under date of February 23, that last summer he 
discovered in Austria the genus Eurypauropus of Ryder. It is there 
represented by two species, the rarer one of which is very similar 
to Eurypauropus spinosus Ryder. He has also detected Pauropus 
huxleyi of Lubbock. We believe this is the first time Pauropus 
has been detected on the continent. 
REPUGNATORIAL PORES IN THE LYSIOPETALIDÆ.— Having re- 
in cave species, where there are apparently no enemies of these 
Myriopods, their pores become at least externally obsolete. —A. 
S. Packard, Fy 
POISON-APPARATUS OF ScorPIONS.—M. oyeux-Laffuie finds that 
the poison organ of the scorpion (S. occitanus) is formed by the 
last abdominal segment, where two small oval orifices serve for 
the exit of the poison; there are two glands, equal in size, and 
ymmetrically arranged ; each occupies a space, covered externally 
by the chitinous skeleton, and having internally an interior and 
Posterior membrane, formed by striated muscular fibres, which 
are inserted into the chitinous skeleton. By their contraction the 
Polson is forced outwards. The wall of the gland consists of a 
