378 [June, 



trumpet-shaped, with four inconspicuous red ocelli at the margin. Length 1 

 inch. 4 



Hab. China. 



25. Cynthia gemmata. Free, encrusted with sand and shells, compressed, 

 rounded ; tubes nearly equal in size, short, slender, tapering, flattened, bright 

 yellow, with four longitudinal crimson stripes corresponding to the angles of the 

 small, lozenge-shaped apertures. Diameter f inch. 



Hab. China. 



26. Cynthia araneosa. Ovate, or subglobular, of a pale orange color, surface 

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

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

 red, the branchial longest, the anal conical ; apertures nearly circular when ex- 

 panded. Length 1 inch. 



Hab. China. 



GASTEROPODA. 



27. Coriocella punctata. Oblong-oval, gibbous, hyaline, everywhere 

 covered with flake-white punctse ; mantle smooth, covered 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. 



28. Coriocella tuberosa. Orbicular; mantle thick, cartilaginous, with nu- 

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

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

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

 neath with sulphur-yellow. Length 2 inches. 



Hab. China. 



29. Aplysia laevigata. 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 dark grey spots and a few patches of 

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

 of a pale horn-color ; arcuated incision short but deep ; summit triangular, 

 small, thick and callous. Length 2 inches. 



Hab. Ousima. 



30. Notarchus cirrosus. 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 

 bluish-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. 



Hab. China. 



31. Notarchus lineolatus. Oblong-ovate, rather produced before, short and 

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

 color greenish, with minute, crowded, 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. 



Hab. Loo Choo. 



32. Placobranchus guttatus. Depressed, ovate ; head and tentacula very 

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

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



