61 
expedition to Yucatan last. winter. He has also compiled in 
the publication the little previous knowledge of the region 
from the incidental collections of Johnson, Linden, Schott and 
Gaumer. His collections embrace 136 forms new to the re- 
gion, of which two (Euphorbia Armourii and E. astroites heterap- 
pendculata) are described as new. We congratulate the Museum 
upon the character of its publications, and specially upon the 
style of issue, which seems to include all the excellent points of a 
perfect departmental serial. . 
The series included are: Botany, Geology, Zoology, Ornithol- 
osy and Ethnology. 
Die Laubmoose. ‘Part 27, Hypnaceae. K.G. Limpricht. (Rab. 
Kryptfl. 4: part 3, 1-64. 1896). 
This part begins the third volume of the mosses, which is to 
include three families or groups as called by the author, compris- 
ing the Isothecieae, Brachythecieae and Hypneae. Of these, the 
Isotheciae are treated in this number, including the genera Cylin- 
Arothecium, Climacium, Isothecitum, Orthothecium, Homalothecium, 
Platygyrium and Pylaisia. The Camptotheciums also are described 
and the key to the Brachytheciums is given. The keys, descrip- 
tions and illustrations are of the usual high order of merit, and we 
Welcome this part as throwing much light on the species of the 
same genera occurring in the United States. We note that Platy- 
&yrium repens var. sciuroides is described from specimens so 
Named and distributed by Sauter in Breutel’s Musci Frondosi, No. 
206. According to some studies recently undertaken by Mr. 
Grout, at the Herbarium of Columbia College, the description of 
this variety under the name is antedated by P. repens var. orthocla- 
dn Kindb., showing that Kindberg did not sufficiently study and 
Compare his variety with European exsiccatae, and that Limpricht 
Was not aware that an American name antedated his description. 
A similar case occurs in Climacium, where Austin published in 
the Muscj App. No. 289. 1874, a variety of C. Americanum, 
Which he called var. fiuitans. Subsequently Renauld and Cardot) | 
Published a description (Bot. Gaz. 15: 59. 1890) for this same — 
_ Variety under the name of C. Americanum var. Kindbergi, a 
_ Rame much less suitable and acceptable to us than Austin’s for 
_ this aquatic form of the species. It is interesting to learn that: 
