Mr. F. Walker on some North American Chalcidites. 19 



Sp. 3. CI. Croulinensis, n. s. 

 Testa longitudinaliter rotundato-ovata, convexiuscula, tenuis, pel- 



lucida, nitida, glabra, alba, ad apicem purpurascens, lateribus fer- 



ruginosis, antice subangulata, postice rotundata. Umbones pro- 



minuli, recti, fere contigui. Denticulus cardinalis obtusus et valde 



indistinctus. Long. ^ 1 q> lat. Jf unc. 



Croulin Island, between Skye and the mainland of Ross- 

 shire towards Applecross, where six specimens were found by 

 Mr. Barlee and myself with the other species. 



Abra (Leach) profundissima. Ligula profundissima, Forbes, 

 Brit. Assoc. Rep. 1843, p. 191. Two young specimens occurred 

 to us with the last. 



Lepton nitidum, Turton, Br. Biv. p. 63. A single valve was 

 found by us in dredging off Skye ; but it is questionable whether 

 this species is not the fry of L. squamosum. 



The Corbula granulata of Nyst is I believe the Poromya ana- 

 tinoides of Forbes's Report on the iEgean Invertebrata. 



Necera costellata {Corbula, Desh.), Forbes, Loven, p. 48. Mr. 

 Barlee procured a specimen of this exquisite shell from Loch Fyne, 

 and kindly placed it in my cabinet. 



The Necera abbreviata of Forbes is the N. vitrea of Loven, 

 p. 48. 



Norton near Swansea, June 21, 1847. 



VI. — Characters of undescribed Chalcidites collected in North 

 America by E. Doubleday, Esq., and now in the British Mu- 

 seum. By Francis Walker, F.L.S. 



[Continued from vol. xix. p. 398.] 



17. Eupelmus Fonteia, fem. Cupreus, antenna nigra, pedes fulvi, 

 femora piceo cincta, tarsi flavi, alee sublimpida. 



Corpus angustum, lineare, convexum, cupreum, nitens, scitissime 

 squameum, parce hirtura : caput transversum, breve, thorace paullo 

 latius ; vertex latus ; frons impressa, abrupte declivis : oculi picei, 

 mediocres, non extantes : antennae nigrse, clavata?, 11-articulatae, 

 thorace vix longiores ; articulus l us longus, gracilis ; 2 US longicyathi- 

 formis; 3 U8 minutus; 4 US et sequentes mediocres, usque ad 10 um cur- 

 tantes et latescentes ; clava longiconica, compressa, articulo 10° 

 duplo longior : thorax sublinearis : prothorax transversus, brevis, 

 antice angustus, utrinque viridivarius : mesothoracis scutum exca- 

 vatum, latitudine longius ; parapsidum suturse sat bene determinate, 

 postice non approximate ; paraptera et epimera magna ; scutellum 

 obconicum ; mesothoracis sternum maximum, cyaneo-viridivarium ; 

 metathorax sat magnus, subquadratus, declivis : petiolus brevissimus : 

 abdomen fusiforme, supra depressum, subtus carinatum, thoracis lon- 

 gitudine et latitudine ; segmentum l um magnum, 2 um et sequentia 



2* 



