108 Mr. F. Walker on some new species of Chaleidites. 
accumulation, to have contributed essentially to the formation of 
the coal. 
We may moreover remark, that this genus being excluded from 
the monocotyledonous division; Flabellaria borassifolia of M. de 
Sternberg, from the coal-mines of Bohemia, being also rejected 
from the family of the Palms to be arranged with the gymno- 
spermous division; and the genus Artisia appearing to be simi- 
larly situated; a few fruits only remain in these ancient strata to 
represent this large division of the vegetable kingdom, and the 
structure of these is too imperfectly known to allow of our placing 
them with any probability in this natural division, when we are 
unacquainted with either their stems or leaves. 
Hence everything leads us to conclude from the researches 
which have hitherto been made, that the terrestrial vegetation of 
the period of the coal-formation was limited to two of the large 
divisions of the vegetable kingdom—the acrogenous or vascular 
Cryptogamia, and the gymnospermous dicotyledonous Phanero- 
gamia. 
XIX.—Characters of some undescribed species of Chaleidites. 
By Francis Waker, Esgq., F.L.S. 
1. Chalcis Alphius, mas et fem. Nigra, antennis nigris, pedibus 
flavis nigro et piceo cinctis, metafemoribus rufis flavo-variis aut 
nigris, alis limpidis. (Corp. long. lin, 2—23; alar. lin. 33—4.) 
Male.—Body black, convex: head and thorax punctured: head 
nearly as broad as the thorax ; vertex broad ; front impressed: an- 
tenn black, filiform, nearly as long as the thorax : prothorax trans- 
verse, subquadrate: scutum very large; sutures of the parapsides 
distinct ; axille remote from each other; scutellum obconic, having 
arim behind : propodeon obconical, declining, rugulose : podeon very 
short : abdomen smooth, shining, narrower and much shorter than 
the thorax ; metapodeon occupying more than half the dorsum ; oc- 
toon and following segments short: legs yellow; coxz black; pro- 
femora and mesofemora black, their tips yellow; metafemora red, 
thick, partly yellow on the outside and armed beneath with nine or 
ten little black teeth; protibie encircled with red; mesotibiz en- 
circled with a piceous band; metatibiz curved, piceous at the base 
and in the middle ; tips of the tarsi piceous: wings limpid; squa- 
mul yellow ; nervures fulvous; humerus much less than half the 
length of the wing; ulna not half the length of the humerus ; radius 
more than half the length of the ulna; cubitus hardly half the length 
of the radius ; stigma very small. 
- The colour of the legs varies ; the protibiz are sometimes red ; the 
mesotibiz black, yellow at the base and at the tip; the metafemora 
altogether black ; the nervures of the wings piceous. The antenne 
