304 
HYMENOPTEBA. 
of Bassus ; in all, 197 species found in Finland, Lapland, and Russian 
Karelia, and comprising many described as new. The $ of Euryproctus 
defectivuSj Holmgr., is described, p. 36 ; E. geniculatus^ H., = geniculosus, 
Gray. ; Mesoleptus seminiger^ Gray., = Perilissus filicornis, Gr., yar. ; 
ChorincBus lapponicus, H., = scaber, Gr. ; Bassus areolatus, Holmgr., = 
sulcator^ Gr. ; Metopius sicarius, Gr., = dissectorius, Pz. ; M. micratorius^ 
Gr., = necatorius, F. Varieties of some species are ’briefly described, 
but not named. The same author, 1. c. p. 83, refers Bassus pulcher, Zett., 
to (Edemopsis dorsata, Zett., as $ . 
Colpotrochia and Exochus. General obseryations, and figures of C. 
elegantula, Schr., fig. 1, E. femoralis^ Fourcr., fig. 3, mansuetor^ Gr., fig. 4, 
flavicepSy Ratz., fig. 5, gravipes, Gr., fig. 6, prosopius, Gr., fig. 7, flavo- 
marginatus, Holmgr., fig. 8, tibialis, Holmgr., fig. 9, notatus, Holmgr., 
fig. 10; S. C. Snellen yan Vollenhoyen, Pinacographia, pp. 11-13, pi. yiii. 
Posocentrus, g. n., L. Proyancher, Nat. Canad. yii. p. 272. Distin- 
guished from Mesoleptus and Tryphon by the pentagonal areolet ; from 
Mesostenus by the abdomen being scarcely pedunculated, and with a 
transyerse impression on its second segment ; and from the Pimplides by 
its inflated face. P. huardi, sp. n , id, 1. c. p. 273, Quebec. 
Mesoleptus micans, depressus, and maculosus, p. 114, variabilis, p. 115, 
incompletus, p. 270, longipes, p. 271, erectus, p. 317, Quebec, sanctihya- 
cinthi, p. 251, Yamaska, id. 1. c. ; M. prceter missus, p. 30, lugubris (? = 
sordidus, Gr.), p. 31, vividus smdi sylvaticus,^^. 32, Finland, glacialis,p. 33, 
Russian Karelia, F. W. Woldstedt, 1. c. : spp. nn. 
Euryproctus vafer, sp. n., Woldstedt, 1. c. p. 35, Finland. 
Perilissus discedms, p. 37, and stigmaticus, . p. 38, Finland, id. 1. c. 
spp. nn. 
Mesolius palmeni, p. 39, autumnalis, p. 42, and sahlbergi, p. 44, Lap- 
land, alutaceus, p. 40, almi, p. 41, and longicornis, p. 43, Finland, id. 1. c. 
spp. nn. 
Tryphon perfidus, id. 1. c. p. 47, Finland; T. canaliculatus, p. 116, 
humeralis and canadensis, p. 117, laurentianus and sanguineus, p. 118, 
tardus and annulatus, p. 119, moyeni, p. 120, clypealis and dufresnii, 
p. 309, excavatus, p. 310, L. Proyancher, 1. c. Quebec : spp. nn. 
Polyblastus holmgreni, p. 49, Lapland, and P. affinis (? Tryphon albo- 
vinctus, Gr.), p. 83, Finland, Woldstedt, 1. c. spp. nn. 
Exenterus umbellatarum, p. 51, and pratorum, p. 52, spp. nn., id. 1. c. 
Finland. 
Cteniscus concolor, sp. n., L. Proyancher, 1. c. p. 139, Quebec. 
Colpotrochia affinis, sp. n., S. 0, Snellen y. Vollenhoyen, 1. c. p. 12, 
pi. yiii. fig. 2, Arnhem. 
Exochus semilividus, sp. n., id. 1. c. p. 13, pi. yiii. 'fig. 11, Switzerland. 
Orthocentrus canadensis, p. 142, plewralis, p. 328, spp. nn., L. Proyan- 
cher, 1. c. Quebec. • 
Bassus fuscitarsus and pulchripes, id. l. c. p. 143, Quebec ; B.frigidus, 
p. 58, Russian Lapland, and B. confusus, p. 84 (= deplanatus, Gr., $ ), 
Finland, Woldstedt, 1. c. ; spp. nn. 
Catocentrus dilatatus, sp. n., L. Proyancher, 1. c. p. 316, Quebec. 
