jellow, with four longitudinal crimso-Q stripes corresponding to the angles of th© 

 small, lozenge-shaped apertures. Diameter f inch. 

 Hah. China. 



29. Cynthia ARANEOSAa Ovate, or subglobular, of a pale orange color, surface 

 divided into slightly prominent, irregular, polygonal spaces, separated by au 

 irregular reticulation of crimson lines;, tubes short, lineated and shaded with 

 jed, the branchial longest, the anal conical j apertures nearly circular V7hea ex- 

 panded. Length 1 inch. 



Hub. China. 



GASTEROPODA. 



50. CoEiocELLA PUNCTATA. Oblo-ug-oval, gibbous, hyaline, everywhere 

 eovered with flake-white punctce ; mantle smooth, coveFed with small circular 

 clear spots, slit and folded at the anterior margin, forming a siphon ; head flat- 

 tened, quadrate, projecting a little beyond the margin of the mantle; tentacula 

 linear, very long and slender, having the eyes sessile at their external bases ; foot 

 somewhat longer than the mantle, truncate and bi-marginate in front, pointed 

 behind. Length f inch. 



Hab^ Ousima. 



51. CoiRiocELLA TUEEROSA. Orbicular J m-an tie thick, cartilaginous, with nu- 

 merous irregular protuberances, four of which are large and prominent ; siphon 

 oblong, conical, projecting forward; head smiU; tentacula stout, of moderate 

 length ;: foot much shorter than the mantle. Color pale brownish^ spotted be- 

 aeath with sulphur-yellow. Length 2 inches. 



Hah. China. 



32. Aplysia LiEviGATA. Smooth, convex, oblong, somewhat produced ante- 

 riorly ; lobes of the mantle rather short; siphon conical, foot with a blunt pos- 

 terior termination ; dorsal tentacula cylindrical, orals dilated at their extremities ; 

 color brownish above, sides with small dart grey spots and a few patches of 

 white puncta3 ; head and foot green Shell suboblong, very thin, membranaceous, 

 of a pale hom-coJor ; arcuated incision short but deep ; summit triangular, 

 small, thick and callous. Length 2 inches^ 



Hab. Ousima. 



33. NoTARCHFs ciREosus. Oblong, back rounded ; foot short and pointed 

 behind, somewhat acuminate ; body covered with numerous rather long appen- 

 dages, much ramified on the back, but mostly simple on the head and tentacula ; 

 dorsal tentacula short, tapering, with the upper half slit ; orals large. Color 

 biuish-grey, sprinkled with black dots; the appendages edged with sulphur- 

 yellow ; a few clear green circular spots in different parts of the body. Length 

 3 inches. 



Hah. China. 



34. NoTAECHt-s LiNEo-LATUS. Oblong-ovats, rather produced before, short and 

 pointed behind ; a few small, scattered, ramose appendages ou the back and sides ; 

 color greenish, with minute, crov/'ded, longitudinal black lines ; a few small 

 round nucleated spots on the sides; tentacles slender, the dorsal ones very long ; 

 eyes conspicuous, situated at a considerable distance in front of the dorsal ten- 

 tacles. Length 2 inches. 



Hah. Loo Choo. 



35. Placobranchiis. suttatfs. Depressed, ovate ; head and tentacula very 

 large ; eyes small, placed together on a mammilla between and behind the tenta- 

 cula; color dark olive, front brownish, mantle covered with circular greenish 

 spots, and blotched with flake-white along the edges^ Within, branchial strife 

 prominent, of a dark green color. Length 1 inch. 



Hah. Loo Choo. 



36. EoLis HUMiLis. Rather slender, wine-yellow ; branchife dark brownish- 

 gsey, with pale yellowish tips, arranged in six clusters, the first two of which 8.rs> 



