80 Miscellaneous. 



horizontal crust-strains increased in intensity. During protracted periods of 

 crush and deformation, the earlier intrusions suffered, together with the 

 original thrust-masses and downslip-slices. They were cleaved and faulted, 

 locally altered, sheared or fragmented just as their sedimentary roof and floor. 

 Later dykes and veins ramified in them and in the environing sediments, and 

 the direction of these later dykes often gives valuable evidence of the local 

 horizontal crust-strains associated with continued local subsidences." 



And at. pages 13-14 of the Introduction it is conclusively stated 

 that 



" In the Fassa and Monzoni district there are the same evidences as in the 

 Sella country of cross-folding and cross-thrusting. But now I furnish a mass 

 of new evidence to show how greatly extended in time these movements were, 

 how extremely complex their deformational effects, and how essentially the 

 history of intermittent intercalations of igneous material was knit up with a 

 long history of local subsidences taking place within the Periadriatic region of 

 the Alps and producing effects which inevitably interfered with the movements 

 of Alpine distribution." 



MISCELLANEOUS. 



A Correction to " Notes on some Medusa? from Japan!' 

 By R. Kirkpateick, F.Z.S. 



In a short paper entitled " Notes on some Medusae from Japan," 

 published in the ' Annals ' for December 1903, I gave an account 

 (p. 616) of a Medusa which I thought belonged to an undescribed 

 genus and species, and to which I applied the names " Oono- 

 meandrus chrysostephanus." This Medusa, however, was described 

 and figured by Tilesius in 1818 (Mem. Acad. Sci. St. Petersbourg, 

 1818, torn. vi. p. 554, pi. xviii.) under the name Medusa saltatrix 

 (from Nagasaki). 



Haeckel (' System der Medusen,' Zweiter Nachtrag, p. 636) places 

 Tilesius's species under Poly orchis, though he had, in manuscript, 

 referred it to a new genus, Spirocodon. 



In 1886 Goette (Sitzungsber. Akad. Wiss. Berlin, 1886, xxxix. 

 p. 832) refers this species to the genus Spirocodon, Haeckel, and 

 places the latter in a new subfamily, Spirocodontida, between the 

 subfamilies Poh/orchidcv and Berenicidce of the family Cannotidw. 



I am much indebted to Mr. E. T. Browne for suggesting that the 

 specimen described by me was the Medusa saltatrix of Tilesius and 

 for calling my attention to the above-mentioned references to the 

 literature on the subject. 



As there has been no figure of Spirocodon saltatrix since the 

 " leidliche Abbildung" published by Tilesius in 1818, I trust that 

 the carefully drawn figures of Mr. Highley, published in connexion 

 with my notes, will prove of interest. 



