— 52 - 



tura ovata, intus aureo-micans, pariete arcnatnla, obli- 

 qua; peristoma obscure niargioatum, marginibus aequa- 

 liter arcuatis, (exteriore superne ad insertioneiii foi'te 

 curvato) iu pariete callo teuuissimo albido coiijunctis. 

 — Long, ll'/a, d. T'/g, ap. l^j^ l, 5 mm lata; 1. 13, 

 d. 1% ap. 1. 9, d. 7^2; 1. 10, d. 6, ap. 1. 6%, d. 5. 

 Port Clarence, frequens, lacus Imau-ruk. 



Succinea annexa u. 



Testa elongato-ovata, fragiUs, dense striata inter rugas 

 incrementales fuscas (in sj). max,) validas et extus ah- 

 rii'ptas, aufr, penultinno dense distincte spiraliter Uneata, 

 anfr. ult. transversim irregulariter alternatim rufo- et 

 albidostrigata; sutura impressa ; spira exserta. apice 

 raamillato ; anfr. 4, ult. convexus, penult. tumidus, antep. 

 altus, extus convexus (subtus visus), suninms sutura tenui 

 a praecedente sejuncta, glohosus; apert. ovata, pariete 

 obliqua, columella arcuata, marginibus linea tenui alba 

 junctis. — L. 14, d. 8, ap. 1. 8, d. 6 mm; 1. 10, d. 6^/2, 

 ap. 6 longa, 4^/2 mm lata. 



Port Clarence. 



Limnaea Onychia n. 



Testa rimata, ovata, rufesceuti-cornea , tenuis , dense re- 

 gulariter striata, extus vix nitidula, intus nitida; spira 

 brevissinia, lateralis, saepissime erosa; anfr. 2^/2, ulti- 

 mus testani fere totam efüciens, penultimus subtus tu- 

 midus, ult. convexus; apert. maxima, lata elliptico- 

 ovata, basi circularis, superne in auriculo libero acu- 

 tiusculo producta, marginibus plica eolumellari sub- 

 conjunctis , columella arcuata, paruni contorta. Dimens. 

 spec. max.: Long. 6 '/s, diam. obliq. 5, transvers. 4 mm ; 

 ap. 5 mm longa, 4 mm lata. 



Japan, ad litora lacus Biva. 



