1883.] Zoology. 555 



and Claus, I have seen drawings of the developmental stages, 

 from the protozoea 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 Miiller'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 

 to accept Miiller's reasons for believing his naupliusand zoea stages 

 to be parts of one life-history. — Walter Faxon, Cambridge, Mass., 

 March g, 1883. 



Discovery of Eurypauropus in 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 Lysiopetalid^e. — Having re- 

 ceived, through the kindness of Dr. Latzel, specimens of Lyswpe- 

 talum carinatum Brandt, from Dalmatia, which is a very large 

 species, I have been able to examine the repugnatorial pores, 

 which are very distinct, their crateriform openings being 

 situated each between two ridges on the anterior edge of the 

 raised portion of the scute. In L. illyricum Latzel, from Aus- 

 tria, they are with difficulty perceived, the area in which they are 

 situated not being discolored with yellow ; but they can be de- 

 tected with a half-inch objective. The two European species 

 mentioned are provided with setae, while our L. lactarium is 

 naked. In the latter species the repugnatorial pores are situated 

 in the middle of the yellow lateral spot, between two carinas, which 

 are higher and closer together than any of the others. They can 

 be seen with a Tolles triplet. 



Reexamining the cave Lysiopetalid, Pseudotremia cavernarum 

 Cope, from Wyandotte cave, and a variety carterensis which in- 

 habits the Carter caves, Ky., I cannot with certainty discover their 

 site, as they are nearly, if not quite, obsolete. It is possible that 

 in cave species, where there are apparently no enemies of these 

 Myriopods, their pores become at least externally obsolete. — A„ 

 S. Packard, Jr. 



Poison-apparatus of Scorpions. — M. Joyeux-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 

 symmetrically 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 

 poison is forced outwards. The wall of the gland consists of a 



