]\Ir. iJ. (.iwyii Jt't}iv}'s oil Xon'-cjiKu M<)Ui.i.sca, 440 



1)1. 07. f. o, 4. ( '. ()-l()U t'., i)i-ol.a1)lv (Iriftc'l from low-water 



mark; I\ 0-10 t". 

 11. ixcuxsi'irrA, Aider. B. C. iv. 20, and v. 207, pi. 07. f. 5. 



C. 0-100 f.; P. 3f. 

 *K. TURGIDA, Jeftreys. 



Shell forming a short cone, rather thin, nearly transpa- 

 rent, and glossy : scidjdnre consisting of extremely delicate 

 and close-set spiral stria* (which arc microscopic), and a very 

 tine hut conspicuous thread-like marking round the peri- 

 phery : colour white : sph-e bluntly pointed : icJiorls five, 

 tumid ; the last occupies three-fourths of the spire : suture 

 deep : mouth roundish : outer lip thin : inner lip filmy, and 

 scarcely perceptible : umbilical chink narrow but distinct : 

 operculum car-shaped, with a very small sj)ire and strong 

 tlexuous lines of growth. L, 0*()7.'"), 13. 0"0,). 



Allied tu 11. inconsjyicua ; but the diflcrcnce will appear 

 by a comparison of the description of each. 



Not uncommon at Drobak and Vallo, from 40 to 100 f. 

 Owing to my not being provided with proper sieves, I did 

 not at the time detect this small species in the dredged ma- 

 terial ; and therefore I could not observe the animal. I 

 Avould again venture to protest against the division of Bissoa 

 into several genera, such as Alvania and Cingula^ "without a 

 single distinctive character being established. It is cer- 

 tainly not a scientific mode of classification. But natiu-alists 

 must i^lease themselves ! 



*Hydrobia ULV.E, Penn. B. C. iv. 52, and v. 208, pi. 09. f. 1. 



C. 40-100 f., probably drifted ; P. 3 f., and var. Barleei, 



1300 f., living, but possibly also drifted. 

 11. VKNTK* )SA, Mont. B. C. i. 52, and v. ] 52, pi. 4. f. 7. This, 



Avith several land- and freshwater shells, were dredged in 



deep Avater ; but they Avere dead, and had cA'idcntly been 



carried into the fiord by streams. 

 CiECUM GLABRUM, Mont. B. C. iv. 77, and v. 209, pi. 70. f. 5. 



C. 40-100 f. 

 Tlkkitella terebra, L. B. C. iv. 80, and v. 209, pi. 70. f. 0. 



C. ;5-80f.; P. 10-422 f. 

 ScALAUiA Trevklyana, Lcacli. B. C. iv. 93, and v. 209, 



pi. 7] . f. 4. C. 40-100 f. ; P. 10-458 f. 

 *Aclls Walleri, Jeffr. B. C. iv. 105, and v. 21U, pi. 72. f. 4. 



C. 40-00 f. ; P. 422-1380 f. 

 OnOiiTOiHA fLAVL-LA, Lo^^ B. C. iv. 118, and v. 211, pi. 73. 



f. 1. C. 40-00 f.; P. 25-40 f. 

 O. RL^SOiDES, Ilanlcv. B. (J. iv, 122, and v, 211, pi. 73. f. 4 



(;. 30-lOO'f. 



