INSECTA — HYMENOPTERA. 
235 
larvae rest in seed-like cells, surrounded by one common gall. Upon 
roses are found Cynips hicolor, in single galls, about the size of peas ; 
C. dichrocerus, in woody galls on the stem ; C. semipiceus, in warted 
woody galls on the root. 
Chalcidid^. — Walker has continued his description of the Chalci- 
didce collected by Darwin (Ann. Nat. Hist. x. p. 113). From Valpa- 
raiso there are one Torymus, two Callimone, one Asaphes, one Lam- 
protatus, one Lyrcus — a new genus, the characters of which are not 
given — one Pteromalus, two Entedon, one Eulophus, two Tetrastichus 
— a genus formed by Haliday from the Cirrospilus lycidas. From Val- 
divia (p. 271) are one Pachylarthrus, one Dicyclus, three Lamprotatus, 
one Pteromalus, one Closterocerus, one Platygaster, one Inostemma, one 
Romilius ; this last genus is new, but here also the characters are 
omitted. The same author (Entomologist, p. 334) has continued his de- 
scriptions of new Chalcididce : Isosoma egesta, Selimnus diores, Pte- 
romalus Bryce, Pt. felginas, and Entedon daurises, are from Geneva ; 
Smiera lamyrus, from Mexico ; Sm. pylas, of unknown locality ; Sm. 
dares, Chalcis orseis, Hookeria hydara, from Brazil. Selim/nus is a new 
genus, seemingly allied to Eurytoma. 
Chrysidid^. — Guerin (Rev Zool. p. 144) has described twenty spe- 
cies of this family : Stilhum viride, from Madagascar ; Stilhum 6-den- 
tatum, from Senegal and Algiers (the latter is not a Stilhum, but Chrys. 
nobilis, KL, Pyria stilboides, Spinola) ; Chrysis (Pyria) Mouattii, 
GTieudii, and bispilota, from Madagascar; orientalis, from Sumatra; 
also a curious Chrysis, with a six-toothed point to its abdomen, Chr. in- 
sularis, from Cuba ; Chr. syriaca, with a four-toothed point, from Syria ; 
episcopalis, from Chili; Miegii and Groelsii [Chr. analis. Spin.), from 
Barcelona ; igniventer, from Algiers (probably Chr. scutellaris, F., sup- 
posing the blue margin of the end of the abdomen to be overlooked) ; 
Mionii, from Senegal ; Chr. truncata, from North America {Pyria tri- 
dens, Enc.) ; brasiliensis, from Brazil ; Polinieri, from Senegal ; Chr. 
bella, from Madagascar, with a toothless point to the abdomen ; a new 
sub-genus, Pleurocera, formed from a Chilian species ; PI. viridis, only 
differs from Chrysis in the antennse being dilated in the middle exter- 
nally, and the point of the abdomen slightly four-toothed ; lastly, Hedy- 
chrwm viride, from Constantina. 
Crabronid^. — Gene (1. c. p. 29) has published his remarks on the 
Stigmus ater ; as this small insect is abundant in Italy, he supposes it 
to be very useful, from destroying the Aphidoe. 
Sphegidj3. — Dalhbom (Disp. Meth. p. 2) has formed a peculiar genus, 
Psammophila, from those species of Ammophila which have a one- 
jointed peduncle to the abdomen. Among the Pompilidce he has cha- 
racterized (ibid. p. 3) a new genus, Isonotus, which includes the P. 
sanguinolentus, F., and which principally differs from Pompilus by the 
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