426 Mr. Blandford on the Scolyto-platypini, 
region are hardly the place for introducing classificatory 
novelties, which can only be appreciated by a study of 
forms from all parts of the world, without respect to 
country. 
At present our knowledge of extra-European Scolytids, 
other than Tomicint and Platypini, is of the most 
fragmentary kind. Those of North America are known, 
but present no anomalous forms. Central and South 
America possess some curious groups, but, with the 
exception of the Camptoceri, which are closely allied to 
the true Scolyti, they are at present undescribed, or at 
most briefly diagnosed in Chapuis’ Synopsis des Scoly- 
tides, a mere preliminary sketch of a work never 
carried out, and quite useless for classificatory purposes. 
Nothing much is known of these groups in Africa nor in 
Australasia, which, nevertheless, contains some interest- 
ing forms; and little can be said of the Asiatic genera, 
with the exception of the Dactylipalpi, which are in all 
respects allied to the South American Phleotrupi and 
Phieobori, and not remote from the Hylesinint. A very 
moderate study of undescribed forms has convinced me 
that the Scolytide, other than the two above-mentioned 
groups, are more variable and extensive than has been 
supposed, and that a satisfactory knowledge and classi- 
fication of this section of the family will be a work of 
considerable time. 
With the small knowledge that we possess of part of 
the family, it is not surprising that the Platypint have 
remained isolated, and that other forms bearing an 
obvious relationship to them have been somewhat 
wanting. In 1858, Motschulsky* described a rather 
mysterious genus Genyocerus from India, to which he 
added a subsequent species from Japan,t with a strong 
resemblance to a Platypid. This genus has not been 
rediscovered, and has been properly rejected by Chapuis 
from the Platypide on account of the antennal structure. 
Among the remarkable and suspicious features of the 
Indian G. albipennis, Motsch., are the mandibles, which 
are very long, falcate and recurved. It is not unlikely 
that Motschulsky has either mistaken for the true 
mandibles appendages such as are found on the 
mandibles of the males (Chap.) of Diapus, or even a 
* Etudes Ent., vii. p. 68, figs. 18-18iv, + Id., ix. p. 19. 
