1872.] Dati d 
from the sea-level up to nearly 4000 feet. A valuable introductory portion 
precedes the list of species, with much interesting matter concerning aspect and 
climate, and a comparative view of the number of Perthshire Lepidoptera. The 
weak point is the break-down at the end of the Crambide: a brief list of 
Tortrices is given, but the Tineina, &c., are (alas!) nowhere. The county is 
divided into districts according to the various watersheds, with a good outline 
map explaining them. In considering the methods of sub-division to be employed 
we are told that a division by parishes was rejected as unnatural. With all 
respect for our Perthshire friends, we feel tempted to enquire whether the actual 
boundaries of the county are not, for the most part, equally unnatural. What if 
the persecutions by our friends should cause an exodus of Vertebrates and Inverte- 
brates into the neighbouring counties of Argyle, Stirling, Inverness, &c. ? 
TRICHOPTERYGIA ILLUSTRATA ET DESCRIPTA. A MONOGRAPH OF THE TRICHOP- 
TERYGIA. By the Rey. A. Marruews, M.A., Oxon. London: E. W. Janson, 28, 
Museum Street. January, 1872. 
We have, at last, to congratulate the entomological world and our esteemed 
correspondent upon the publication of this de minutissimis opus maximum ; the 189 
closely printed quarto pages and 31 plates of which (comprising upwards of 320 
separate objects) cause the 98 octavo pages (very rivulets of type meandering 
through wide meadows of margin) and 9 plates of Gillmeister to look insignificant 
enough. To show how the study of these wonderful atoms has increased since 
1845, the date of the latter work, it may not be out of place to note that the sin- 
gle genus and 36 species of Gillmeister have now increased to 21 genera and 149 
good species, of which latter 78 are recorded from Great Britain. 
The descriptive part of Mr. Matthews’ work is written wholly in Latin, the 
portion relating to the general characters being also given in English, in which lan- 
guage the introductory chapter is also written. 
The author places the Trichopterygia between the Philhydrida (or Hydradephaga) 
and Brachelytra, commencing the group with Nossidiwm, and finishing with Ptinella, 
from which genus the Brachelytra proceed by an almost imperceptible gradation. 
Admitting the decided relations between this group and certain of the Trichopte- 
rygia, it seems, however, to us that the links between the latter and Gyrinus or 
Cercyon (as the case may be) are quite unsatisfactory. But this will only afford 
another instance of the impossibility of reducing natural classification to a straight 
or circular line. 
The original descriptions of all genera and species already published are given 
in Latin, according to the authors’ names, in alphabetical order. Next follows an 
elaborate account of the external anatomy, with notices of larve and pups and of 
the limited portions of the internal anatomy known to the author. Then, after a 
synoptical table of genera, commences the descriptive portion of the work, the 
following genera and species being characterized as new: LHuryptiliwm (p. 63), for 
the reception of Trichopteryx sawonica, Gillm.; Throscidium (p. 64), for two new 
species, Germainii and Fairmairii (both from S. America) ; Motschulskiwm (p. 72), 
in honor of the well known Russian Coleopterist now deceased (whose acumen ap- 
