Mr. J. Gwyn JeftVcyri on No)'ice(jiaa Mollusca. 445 



pi. 67. f. 3, 4. C. 0-100 f., probably drifted from loAv-water 



mark; P. 0-10 f. 

 R. iNCONSPicuA, Alder. B. C. iv. 26, and v. 207, pi. 67. f. 5. 



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

 *R. TUEGIDA, Jeffreys. 



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

 rent, and glo3sy : sculj)ture consisting of extremely delicate 

 and close-set spiral stria3 (which are microscopic), and a very 

 fine but conspicuous thread-like marking round the peri- 

 phery : colour white : sjyire bluntly pointed : ivhorls five, 

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

 deep : vioufh roiindish : outer lij^ thin : inner lij) filmy, and 

 scarcely perceptible : wnhiUcal chink narrow but distinct : 

 operculum ear-shaped, Avith a very small spire and strong 

 flexuous lines of growth. L. 0'075, B. 0-05. 



Allied to U. inconspicua ; but the diflference will ajjpear 

 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 

 would again venture to protest against the division oiliissoa 

 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 naturalists 

 must please themselves ! 



*Hydrobia ULVJi, Penn. B. C. iv. b'2, and v. 208, pi. 69. f. 1. 



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



1366 f., living, but possibly also drifted. 

 II. VENTROSA, Mont. B. C. i. 52, and v. 1 52, pi. 4. f. 7. This, 



with several land- and freshwater shells, were dredged in 



deep water ; but they were dead, and had evidently been 



carried into the fiord by streams. 

 C.*:cuM GLABKUM, Mont. B. C. iv, 77, and v. 209, pi. 70. f. 5. 



C. 40-100 f. 

 TuRKiTELLA TEREBRA, L. B. C. iv. 80, and V. 209, pi. 70. f. 6. 



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

 iScALARLV Trevelyaxa, Lcacli. B. C. iv. 93, and v. 209, 



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

 *AcLis Walleri, Jeffr. B. C. iv. 105, and v. 210, pi. 72. f. 4. 



C. 40-60 f. ; P. 422-1380 f. 

 Odostomia f'LAVL'LA, Lov. B. C. i\'. 118, and v. 211, pi. 73. 



f. 1. C. 40-60 f.; P. 25-40 f. 

 O. KissoiDES, lianley. B. C. iv. 122, and v. 211, pi. 73. f. 4. 



C. 30-100 f. 



