Acta Societatis pro Fauna et Flora Fennica, XIII, n:o 7. 179 



truncatum submedianum attenuata, margo dorsalis arcua- 

 tus, ventralis arcuatulus, hic postice ascendens; crista 

 longa, prominula; margarita antice albida, postice coerule- 

 scens. Long. 80 — 100, alt. 45—50, cr. 23 — 25 mm. 

 (West. 1. c.) 



Hah. Siiecia in Skane (ad Honsinge: S. Nilsson) et VVest- 

 manland (in lacu Hellingen : V. L.). 



A. fedderseni mh. G. subrhombea, solida, postice late rostrata; 

 margo ventrahs antice ascendens, postice rectus; ligamen- 

 tum validissimum; vestigium distinctum dentium lateralium 

 sub ligamento. Long, 96, alt. 57 mm. (Morch sub nom. 

 A. incrassat»). 

 Hah. Dania in Jylland (ad Rindsholm: A. Feddersen). 



A. oblonga Mill. (Mem. soc. agr. sc. Angers, 1883)? C. vix 

 obliqua, parum ventrosa, junior vix ventrosula, antice et 

 infra (ubi medio forte) compressa, olivaceobrunnea, rugis 

 levibus postice elatis, postice plus quam duplo longior, 

 in rostrum fere medianum, lente compressum, oblique 

 truncatum, biangulosum elongata, margo superior et infe- 

 rior leviter et subasqualiter curvati, ille angulo parvo v. 

 obsoleto in marginem posteriorem longum lente declivum 

 transiens, hic medio subretusus, postice subrecte sat alte 

 ad rostrum ascendens ; area humihs, longa, umbones rufi, 

 depressi, leviter rugati v. decorticati. Long. 80, alt. -i3, 

 cr. 23 mm. 



Hah. Dania in Ladegaardsaaen pr. Kjobenhavn (A. F.) et 

 ad Haraldsted so (H. L.) 



Cum ullo dubio amiciss Drouet ad hanc speciem speci- 

 mina mea pro dolor juniora e loco danico citato duxit. Forte 

 majore fide ad A. oblongam Mill. pertinent specimina majora 

 (I. 110, a. 55, cr. 33 mm.) qucie e lacu Takern in Ostergotland 

 Snecio' accepi. 



(11) C. obliqua, margine dorsali subrecte et scepius alte ascendente. 

 a medio alto utrinque subcequaliter attenuata, rostrum suhne- 

 dianum, late truncatum, margo ventralis vix curvatus, utrinqm 

 ascendens, pars posterior 2 — 5^2 O'«»'0 triplo) longior, area cont 

 ■pressa, crista scepe alta, angulata. 



