CURCULTONlDiR, SCOLYTIDiE. 
Ins. 99 
from the Cossonini by having the prosternum very narrow between the 
coxae, and by possessing a deep transverse gular groove beneath in front 
of the eyes. Phlccophagus, with its longer rostrum and weaker gular 
groove, is almost intermediate. Dryotrihus, Horn, would be placed, 
in Wollaston’s arrangement, in the first group of his Pentarthrides. 
An arrangement is proposed differing radically from that offered by 
Wollaston for the 6''ossow^m, and which, “ if found in accordance with 
natural affinities, will result in a great reduction of the number of 
genera.” This new arrangement is based upon an examination of no 
more than eight N. American genera, whereof two are new, the proper^- 
tion of one-fourth of novelty in such a limited number being at variance 
with the proposed reduction above mentioned. Homaloxenus dentipes^ 
Woll., is recorded from Florida; i?oro^^?cews, Woll., is merged in Cossonus, 
Clairv., and B. minor, Woll., dubiously referred to C. corticola, Say; 
Rhyncolus protr actus, Horn, is o. Macrorrhyncolus ; Phloeophagus pallidiis, 
Boh., is a Stenomimus ; Cossonus pinguis, Horn {Jide Horn), = Caulo- 
philus latinasus, Say, and is dubiously queried as identical. with C. sculp- 
turatus. 
Gononotus, g. n., id. 1. c. p. 336. Probably near Lymantes, and perhaps 
with some relation to the European Styphloderes. Differs from Dryoph- 
thorus, and from Dryotribus (with which latter it is associated as a group, 
Dryotribi) by its 7- jointed funiculus. For G. lutosus, sp. n., id. 1. c. 
p. 337, Florida. 
Macrancylus, g. n., id. 1. c. p. 338. Cossonini : slender, cylindrical, not 
depressed ; with stout rostrum, not separated from the front, gradually 
but slightly tapering externally, and with the antennae inserted near its 
base. No affinities suggested. For M. linearis, sp. n., id. 1. c. p. 339, 
Florida. 
Allomimus, g. n., id. 1. c. p. 339. Nearly allied to the preceding genus, 
but less elongate, and very much more coarsely sculptured, with the 
antennae inserted near the middle of the rostrum, and the antennal 
grooves directed towards the eyes. For Cossonus duhius, Horn. 
Himatium errans, sp. n., id. 1. c. p. 427, Columbia (the genus is 
hitherto only known from Malabar). 
Pentharthrum wollastoni, W. Roelofs, CR. Ent. Belg. xix. p. vi., Ceylon 
(7 millim. long); P. rodriguezi, C. O. Waterhouse, Ann. N. H. (4) xviii. 
p. 120, Rodriguez Island : spp. nn. 
SCOLYTID.®. 
J. L. Leconte, P. Am. Phil. Soc. xv. pp. 341-391, rejecting the Euto- 
mides (which, having the flanks separate from the pronotum, are allied to 
Rhipidandrus, Lee., and associated with the Tenebrionidoe, though still 
of doubtful position and affinities), follows Lacordaire’s arrangement in 
the main features, though inverting it, and proposing various minor 
groups. In the Platypodidoc, Platypus disciporus, Chapuis, = flavicornis^ 
F., var. ; P. hlanchardi. Chap., = A-dentaius, 01. ; P. parallelus, Chap., 
and P tremiferus, perfossus, and rugosus, (jhap.,=. compositus. Say (paraU 
lelus, Fab., being ir recognisable). Crypturgus and Dolurgus are removed 
