160 RHYNCHOPHORA. 
Four examples. The two latter species are tolerably like X. pi/osus in appearance, 
and serve to link it with such a very dissimilar form as X. zrasus. 
PHLCEOSIN US. 
Phieosinus, Chapuis, Syn. Scol. p. 37 (Mém. Soc. Liége, 1878, p. 245) ; Leconte, Rhynch. N. Am. 
p. 381. 
Species of this genus, a separation from Hylesinus, under which name several of 
them have been described, have been recorded from the Palearctic and Oriental 
regions, Japan, North and Central America. 
In the latter region two have at present been found. 
While the species of Hylesinus (s. str.) are attached to broad-leaved trees, those 
of Phleosinus, of which the habits have been recorded, depredate upon Conifere, 
especially the Cupressinee. 
1. Phieosinus, sp. 
Hab. GUATEMALA, Quiché Mts. (Champion). 
The two small specimens taken by Mr. Champion in the Quiché Mountains are 
probably only a varietal form of P. dentatus (Say); they were regarded by me as identical 
with P. haagi, Eichh., after comparison with the example of that insect in the 
Chapuis collection. Since then I have been able to see Kichhoff’s original type, now 
in possession of Herr Schaufuss, and have been led to doubt the correctness of my 
former collation. A good series of P. dentatus has not been before me, and an 
examination of my own series of N.-American Phleosini, together with examples of 
the recognized species lent me by Dr. Horn, has served only to increase the difficulty 
attending their recognition. They are all nearly allied, and, except in the case of 
examples taken together, there is a difficulty in correctly assigning the sexes. It is 
quite possible that the number of species existing in the United States is greater than 
has been supposed. My own specimen of P. cristatus (from Ricksecker) differs in 
various ways from that in Dr. Horn’s possession, and I am unable to regard his 
example of P. serratus as the male of P. dentatus, as Mr. Schwarz has suggested. It 
is quite unlike examples of P. dentatus sent to me under the name of P. graniger, 
Chap., by Mr. Hopkins. 
2. Phleosinus coronatus. 
Phleosinus coronatus, Chap. Syn. Scol. p. 89 (Mém. Soc. Liége, 1878, p. 247) }. 
Hab. Mexico, Yucatan }, 
This species was described from a single immature specimen. Therefore it would 
be useless to add anything to the original diagnosis. 
