1864. ] DR. L. PFEIFFER ON NEW LAND SHELLS. 603 
lineis seu undis incrementi conspicuis : intus dente cardinalt 
uno, parvo, extante ; callositate claviculoidea antica, margini 
contigua ; fossa cartilaginea postice sita ; cicatricibus adduc- 
torum rotundatis, margini dorsali contiguis ; linea pallii sim- 
plici. 
Long. ‘8, lat. °4, alt. *12 poll. 
Hab. in sinu Pugetiano (Kennerley). 
2. KENNERLIA BICARINATA, 0. S. 
K. ¢. “K. filosee”’ simili, sed haud rostrata; postice latiore ; 
carinis in valva convexa duabus, in valva planata una, ex umbo- 
nibus postice decurrentibus ; lamina prismatica radiatim sul- 
cata, haud spongiosa ; valva convexa tenuiter indentata ; liga- 
mento elongato, tenuissimo. 
Long. °5, lat. °25, alt. :06 poll. 
Hab. in insula Catalina, Californie ; 40-60 uln., rara (Dr. J. G. 
Cooper. State Geological Survey Coll. no. 1063; Mus. Smithsonian 
Inst.). 
The shape and keels at once distinguish this beautiful little species 
from its Northern ally, with which, in the hinge and threading of 
the outer layer, it exactly agrees. The ligament in both species is 
extremely thin, holding the valves together from the umbo to the 
posterior end. The fossil Pandora bilirata, Conr., may prove iden- 
tical with this recent species; but the diagnosis, figure, and type 
specimen are so imperfect that it would be too hazardous to affiliate 
them. 
3. KeNNERLIA GLACIALIS, Leach (Pandora gl.), Sby. Sp. Conch. 
f. 4, 5,6; Hanl. Rec. Shells, p. 49 (diagn. auct.). 
...valva dextra callo conspicuo fossam cartilagineam firmante ; 
ossiculo fortiore. 
The known species of Kennerlia are thus confined to the North 
Pacific and the Arctic seas. The diagnosis of No. 1 belongs to a 
paper on Dr. Kennerley’s new species in the Journ. Ac. N.S. Philad. ; 
and that of No. 2 to a series of papers on Dr. Cooper’s new species 
in the Proc. Calif. Ac. N.S. They are inserted here to complete 
the monograph, as far as known to the writer. The “ Pandora 
striata, Quoy” (Add. Gen. ii. p. 371), is a Myodora. The latter 
genus is so well defined that no alteration is proposed in it. 
4. DescripTIoNns oF SEVEN New Species or LAND SHELLS, 
FROM THE COLLECTION or H. Cumine, Ese. By Dr. L. 
PFEIFFER. 
1. Hexix peaseana, Pfr. (172c). T. perforata, turbinata, 
solidula, irregulariter striata, et striolis antrorsum descenden- 
tibus confertissimis sculpta, viv nitidula, fusculo-carnea, macu- 
lis et punctis corneis irregulariter notata et fascia unica supra- 
