to 



Sv. Leonh. Törnquist. 



1890 Mozograptus peregrinus Geinitz, pars, Die Graptolithen d. K. Mineralog. Mu- 

 seums in Dresden, p. 21, Taf. A, fig. 31. 



My most perfect specimen, which has a length of 15 mm., exhibits the same 

 general shape as the type species. As all specimens come under my notice are 

 more or less deformed by lateral pressure, it is difficult to get an exact idea of the 

 size, direction, and distance of the thecae, but, by comparing a considerable number 

 of examples, the following results can be arrived at. The thecse number about 12 

 in 10 mm., are perpendicular to the stem, and have a length of 3 mm. to 4 mm., 

 being, however, in the sicular region shorter, and a little more distant from each 

 other. From the typical form the variety differs in having noticeably longer tbecse; 

 and it resembles the above-cited figures given by Geinitz so much that I do not 

 hesitate to identify it with them. 



Localities and horizon. Thuringia: I have found this graptolite at 

 Pausa and Thierbach, and good specimens obtained from Raitzhain and 

 Altmannsgrün are in the collection sent to me by Mr. Eisel. It is a rather 

 common fossil in Eisei/s zone of Rast rites -peregrinus (12 b). 



Rastrites longispinus Perner. 



1897 Rastrites peregrinus A. Var. longispinus Perner, Etudes sur les Graptolites de 



Bohême, IlLieme Partie, Section a, p. 9, fig. 7, Pl. 13, 

 figs 32, 35. 



The initial part forms a semi-circle, whereas the mature division is rectilinear. 

 The thecee have a length of 3 to 4 mm. and stand normal to the common canal. 

 In the typical form the internodes are stated by Perner to vary in length from 

 1.2 mm. to 1.5 mm.; there are accordingly 7 or 8 thecae in 10 mm. My collection 

 contains numerous fragments from several Bohemian localities which seem to be 

 referable to this species, but none of them are perfect enough for an exact deter- 

 mination. 



The graptolite described and figured as Rastrites peregrinus Barr, in Lap- 

 worth's paper »On Scottish Monograptidœ» (p. 313, Pl. X, fig. 1), seems to repre- 

 sent this species or a variety of the same. It has subsequently been reproduced by 

 the same author in »A Catalogue of the Western Scottish Fossils», Pl. 1, fig. 3, 

 and in his paper »On the Graptolites of County Down», Pl. V, fig. 1. A similar 

 form, likewise designated as Rastrites peregrinus, is figured by Frech in »Lethsea 

 Geognostica», vol. I, p. 266, fig. 319:3. 



Rastrites rastrum Richter. 



Pl. II, fig. 1—6. 



1853 Monograpsus peregrinus (var. rastrum) Richter, Thüringische Graptolithen; 



Zeitschr. d. Deutsch. Geolog. Gesellsch., V Bd; p. 461, 

 Tab. XII, fig. 31. 



