184 C. A. Westerlund. Synopsis MoUuscorum Extramarinor. Scandin. 



A. mbrchiana Cless. (Mon. in Chemn. Cab., 1876). C. obliqua, 

 subovalis, brevis, medio ventricosa, luteo-viridis, superne 

 rufescens, area brunnea, antice abbreviata, declive 

 rotundata, postice sesqui longior, rostro breviusculo, sub- 

 mediano, subangusto, apice rotundato, margo dorsalis 

 arcuatulus, posterior subrectus, lente descendens, ventralis 

 arcuatus, utrinque a^qualiter ascendens; area perangusta, 

 angulo subnullo; ligamentum breve, forte; lunella rotun- 

 data. Long. 62, alt. 40, cr. 25 (20) mm. 



Hah. Dania in Sja^lland (Glimso, Tiesso etc). 



A. parvula Drt. (Et. Nay. Fr., 1852). C. elongato-ovalis, obliqua, 

 ventrosula vel subcompressa, brunneo-rufescens (fuscoviridis 

 Loc), nitida, striatula, lineis incrementi nonnullis (6 — 8) 

 sat fortibus, antice brevis, angustata, rotundata, margine 

 anteriore forte declivi, superiore arcuato, ascendente, po- 

 steriore subrecto, inferiore curvatulo, postice ascendente; 

 pars posterior 2 V2 longior, in rostrum late truncatum 

 paullo inframedianum elongata; area compressa, postice 

 angulata, cristata ; margarita coerulescens, superne hepa- 

 tica. Long. 60—70, alt. 32—40, cr. 22 (40—30—14: 

 Loc) mm. 



Hah. Suecia in Flatensjon ad Stockholm (Hj. W.). — Da- 

 nia in rivulo ad Vigersdal (H, L.). 



A. redacta Drt. C, minima, ovata, tenuis, ad marginem striato- 

 lamellosa, grisea; margo dorsahs arcuatus, in fine excisus; 

 margo ventralis convexus; margo anticus late semicircu- 

 laris; pars postica breviuscula, in rostrum breve attenuato- 

 subacutum desinens; crista prominula, incisa; nates de- 

 pressulae, plicato-undatse, rubiginosa?; ligamentum tenue, 

 breve, obtectum: laminulse Hneares, breves; sinus Lanceo- 

 latus; impressiones superficiales; margarita palhde coeru- 

 lescens. Long. 60, alt, 39, cr. 20 mm. (Drt.) 



Hah. Dania in Bavelseso et in Glumso (H, L.). 



