12 
ings mingled together, the first arising from the anterior point of the 
outer lip, and proceeding to the inner edge of the aperture; the second 
from the middle of the outer lip, and extending along the anterior mar- 
gin of the volutions to the apex ; spire acuminated, of half the length 
of the shell; volutions seven to eight, rather convex, suture slightly 
prominent ; aperture somewhat wide and short; outer lip smooth 
and thin; inner lip even and also edentulous, no varix at its inner 
border; channel short and wide; a few strize traverse the anterior 
part of the dorsum. 
Length, 4° of an inch; width, 2°, of an inch. 
27100 > 100 
Hab. ? Cab. Gaskoin. 
18. CotumBELLA HIRUNDO. Testa ovato-pyramidalis, levis, 
nitens, pallida, strigis punctisque brunneis leviter maculata ; 
spird mucronata, dimidium longitudinis teste aequante; an- 
Sractibus novem vel decem planis ; apertura latiusculd ; labio 
externo crasso albo semicirculari, dentibus duobus vel tribus 
latis posticis internis, margine externo crasso albo; labio in- 
terno levi, subspirali, dente solitario majusculo ad posticam 
partem; canali longo, latiusculo, recurvo, rostris prominenti- 
bus, externo divergente quasi furcato ut in formd caude hirun- 
dinis. 
Shell ovato-pyramidal, smooth and shining, pale in colour, lightly 
speckled with fine brown streaks and dottings, with intermissions of 
colour along the darker coloration of the posterior edge of the volu- 
tions ; spire sharply mucronated, bemg about half the length of the 
shell; nine to ten flat volutions; aperture rather broad; outer lip 
thick, white, semicircular, with two or three broad denticulations 
within posteriorly, converges abruptly to form the channel ; external 
margin strong and white; inner lip smooth, subspiral, with a single 
rather large node or tooth at the posterior part ; channel long and 
moderately wide, recurved, beaks prominent, outer one diverging, 
giving a forked appearance, as in the tail of the swallow. 
This species is of the stamp of Col. bicanalifera of Sowerby, Proc. 
Zool. Soc. part ii. page 113; Sowerby’s Thesaurus, fig. 144. 
Length, 55°, of an inch; width, 2.6 of an inch. 
Hab. Per the ‘Samarang.’ Cab. Gaskoin. 
19. CotuMBELLA CALIFORNIANA. Testa oblongo-ovata, sub- 
pyramidalis, levis, nitens, brunnea, vel brunneo variabilis, ali- 
quando lineis tenuibus, fortioribus, aut latiusculis irregulari- 
bus; spird acuminatd dimidium teste subequante ; anfracti- 
bus septem convexis; aperturd latd subquadrangulari; labio 
externo tenuiusculo intus denticulato, labio interno leviter den- 
ticulato ; dorso anticé transversim striato; peritremate pur- 
pureo-nigricante ; canali brevi. 
Shell oblong-ovate, smooth and shining, rather pyramidal, of a 
brown colour, varying much in intensity and markings, in being 
sometimes uniform, in others with one or two thin darker coloured 
cinctures, or with broad and continuous dark regular markings 
