24 
BIBLIOGRAPHY. 
chromatophores, for those of E. tomentosus, Huds., are also ribbon- 
shaped and frequently spirally twisted. 
Following the example of Kjellman (Handbook), M. Kuckuck 
retains Ect. siliculosus , Dillw., sp., Ect. conjervoides , Roth., sp., 
and Ect. penicillatus , A g., as distinct species, but he reduces 
Kjellman’s Pylaiella varia to the rank of a variety of Ect. 
litoralis. One new species, Ect. dasycarpus , characterized by its 
slender, blunt, cylindrical, terminal sporangia of variable length up 
to 250 p, but very constant width 10-15 p, is described. The 
paper, which it should be remarked is illustrated by six excellent 
figures of Ect. siliculosus , E. confervoides , Ect. dasycarpus , and 
Ect. peniculatus , concludes with an account of the morphology of 
the species described. 
Ectocarpus siliculosus , Dillw ., sp ., forma varians nov. f. ein 
Beispeil fur ausserordentliche Schwankungen der plurilocular en 
Sporangienform (an example of extraordinary variation in the form 
of plurilocular sporangia). By P. Kuckuck, Berichte der 
Deutschen Botanischen Gesellschaft, June, 1892). — In this paper, 
which may be considered a continuation of the one mentioned 
above, M. Kuckuck describes and figures a very interesting form 
of E. siliculosus characterized by the very extraordinary variety 
of shapes assumed by the plurilocular sporangia, which may be 
either bluntly cylindrical, 2-3 times as long as broad, with swollen 
compartments, or ovate cylindrical, or filiform up to 34 times as 
long as broad, sessile or stalked, terminal or intercalary. 
Had not the author met with all the forms of sporangia on 
filaments from the same tuft he would have thought that the form 
with short truncate sporangia and swollen compartments was a 
distinct species related to Ect. Eeinboldii, Rke., but differing from 
it by the zoospores escaping by a common opening situated either 
at the apex, side, or base of the sporangia, not through many open- 
ings, one to each compartment as in that species. 
Atlas der deutscher Meeresalgen. By J. Reinke. — The third, 
and, we regret to say, concluding, part of Dr. Reinke' s great work 
has at last made its appearance. Originally it was intended to 
publish six parts containing in all 150 plates; the greater part of 
this programme, however, has, from want of means, had to be 
abandoned, only three parts containing 50 plates having actually 
been printed. No book dealing with the marine algas on quite so 
imposing a scale has been published since the appearance of the 
superb “Etudes Phycologiques ” and “Notes Algologiques ” of 
Bornet and Thuret. Throughout, the volume is a record of the 
thorough and scholarly manner in which Dr. Reinke treats auy 
subject he attempts, and it will be of the utmost importance in 
advancing the study of algology. It is scarcely necessary to say 
that great skill and care have been bestowed on the execution of 
the admirable plates, and that great credit is due to all concerned 
in their execution. The present part contains the description and 
