Siboga expeditie

I

iiiiii

THE

PROSOBRANCHIA OF THE SIBOGA EXPEDITION

PART III

GYMNOGLOSSA

Sib o ga- Expeditie

XLIX'c

THE PROSOBRANCHIA OF THE SIBOGA

EXPEDITION

BY

M. M. SCHEPMAN

Bosch en Duin near Utrecht (Holland)

PART III

GYMNOGLOSSA

With 1 plate

=*4©Htr=-

late E. J. BRILL

PUBLISHERS AND PRINTERS

LEYDEN — 1909

S

PART III

GYMNOGLOSSA

This third part, containing the Gymnoglossa of the Siboga Expedition, is much less bulky
than its predecessors, containing only 32 species, of which a few are new to science. It is a
very difhcult group, and I am much obliged to Mr. J. Cosmo Melvill for his liberal assistance
in naming and classifying the doubtful specimens and for procuring specimens for comparison.

I wish here to express my acknowledgement to the library of Teyler's Institution at
Haarlem and its librarian, who has in the most obliging manner facilitated the use of the
conchological books, represented there in an unusual abundance.

The classification of some specimens remained still a little doubtful, f. i. in the only
Eulimella and in one species of Elusa, even after making use of the papers of Dall and
Bartsch, who have recently made a special study of this section of mollusks. I have repeated
the descriptions of the new species of Mucronalia and Stilifer, from my monograph with
Dr. Nierstrasz, in order to render this part more complete, than it would have been, by simply
quoting them. For these species I have to thank Dr. J. Thiele for the loan of specimens
from the Zoological Museum of Berlin.

b

SI l'.OG A-EXPEDITIE XLÏX' C.

don ( j\ mni iGi ossa < ïray.
Fam. Eulimidae.

Eulima Risso.

ï. Eulima Martinii A. Adams

ADAMS. Sow. Thes. Conch. Vol. II, p. ;■>;. PI. 169, fig. 5.

Reeve. Conch. Ie. Vol. XV, Eulima, fig. 6.

TRYON. Man. of Conch. Vol. VIII, p. 266, PI. 68, fig. 90.

ESSIN. Martini-Chemn. Conch. Cab. Ed. II. Vol. I, Eulimidae, p. 4, PI. 1, fig. 10.

Stat. 33. Bay of Pidjot, Lombok. 22 M. Mud, coral and coralsand. 1 Spec.

The specimen though rathcr small (about 18 .Mill.i is sufticiently characterized by its
numerous whorls, agreeing with the upper whorls of a Japanese specimm

2. Eulima arcuata Sowerby.

SOWERBY. Reeve Conch. Ie. Vol. XV, Eulima, hg. 14.

TRYON. Man. of Conch. Vol. VIII, p. 266, PI. 68, fig. 94 {major var.).

CLESSIN. Martini-Chemn. Conch. Cab. lul. II, Vol. I. Eulimidae, p. 18, PI. 4, fig. 6.

Stat. 78. Lumu-Lumu-shoal, Horneo-bank. 34 M. Coral and coralsand. 1 Spec.

3. Eulima polygyra A. .Adams.

Adams. Sow. Thes. Conch. Vol. II, p. 799, PI. 169, fig. 36.

REEVE. Conch. Ie. Vol. XV, Eulima, fig. 24.

TRYON. Man. of Conch. Vol. VIII, p. 270, PI. 68, tig. 18.

CLESSIN. Martini-Chemn. Conch. Cab. Md. II, Vol. I, Eulimidae, p. 24, PI. 5, fig. 4.

Stat. 51. Madura-bay. 69—01 M. Fine grey sand, coarse sand with shells. 1 Spec.
Stat. 162. Between Los],: and Broken-islands, West coast of Salawatti. 18 M. Coarse and
fine sand with clay and shells. 1 Spec.

Both specimens have losl their apical wliorls, and wcre consequently of rather uncertain
identification, so I asked the assistance of Mr. Melvill, who wrote that the specimen from
Stat. 162 is more typical than that from Stat. 51.

4. Eulima uut/a ,\. Adams.

Adams. Proc. Zool. Sur. Lond. 1851, \>. 2;

Sow. Th. il. ; , ./. PI. H '-■ 30.

235

REEVE. Conch. Ie. Vol. XV, Eulima, fig. 15.

TRVON. Man. of Conch. Vol. VIII, p. 268, PI. 68, fig. 3.

CLESSIN. Martini-Chemn. Conch. Cab. Ed. II, Vol. I, Eulimidae, p. 10, PI. 2, fig. 9.

Stat. 240. Banda. 9 — 45 M. Black sand, coral. 1 Spec.

The specimen sufficiently agrees with fig. 30 of the Monograph of Adams in Sowerby's
Thes. Conch. (1. c), less so with the other quoted figures. Mr. Melvill wrote about the Siboga-
specimen: "Does not exactly agree, but comes near it". The specimen is perhaps more hyaline,
the margin of the outer lip, can scarcely be called straight. As even the figures in the Thesaurus
Conch. are considerably different, so much that they can scarcely be considered to belong to
one and the same specimen and one might consequently conclude, that the species be slightly
variable, I have left this single specimen without a new name.

5. Eulima aciculata Pease.

PEASE. Proc. Zool. Soc. Eond. 1860, p. 438.

Reeve. Conch. Ie. Vol. XV, Eulima, fig. 36.

CLESSIN. Martini-Chemn. Conch. Cab. Ed. II, Vol. I, Eulimidae, p. 19, PI. 4, fig. 11.

Stat. 43. Pulu Sarassa, Postillon Islands. Up to 36 M. Coral. 1 Spec.

As far as I ara aware, this species has only been recorded from the Sandwich-isles, but
If it be the same as E. acicula Gould, it seems to be more widely spread, at least I have
received specimens under this latter name from Mauritius.

6. Eulima attcnuata Sowerby.

SowERBY. Reeve. Conch. Ie. Vol. XV, Eulima, fig. 46.

Tryon. Man. of Conch. Vol. VIII, p. 282, PI. 70, fig. 97.

CLESSIN. Martini-Chemn. Conch. Cab. Ed. II, Vol. I, Eulimidae, p. 3, PI. 1, fig. 6.

Stat. 52. 90 3'-4 S., ii9°s6'7E. Savu Sea. 959 M. Globigerine ooze. 2 Spec.
Stat. 178. 2° 40' S., I28°37'.5E. Ceram Sea. 835 M. Blue mud. 1 Spec.

The specimens don't agree in every respect with the description, a. o. I see no faint
band at the suture, the mouth of one of the specimens from Stat. 52, seems to be more
effuse, but comparing it with the specimen from Stat. 178, I think this may be caused by its
being slightly damaged. So_ I think it is preferable, not to describe a new species on such
slicht differences.

7. Eulima vitrea A. Adams.

A. Adams. Sow. Thes. Conch. Vol. II, p. 799, PI. 169, fig. 35.

REEVE. Conch. Ie. Vol. XV, Eulima, fig. 19.

CLESSIN. Martini-Chemn. Conch. Cab. Ed. II, Vol. I, Eulimidae, p. 10, PI. 2, fig. 7.

Stat. 74. 5°3'.5S., H9°o'E. Makassar Strait. 450 M. Globigerine ooze. 1 Spec.

Exactly agreeing with the quoted descriptions.

3

sp.

L, [19 40 E. Sulu Sea. 522 M. Stony bottom. 1 Spec.

Th imen resembles the figure ol /:'. attenuata in Rei I onch. Ie, but is stil]

differenl iperture is too much broken for identification, the columella being partij lost.

Eulima Melvilli n. sp. PI. XVII. fig. 5.
S: h-Ubian, Sulu Archipelago. 16 — 23 M. Lithothamnion-bottom. 1 Spec.

Shell conical, scarcely distorted to the right, thin, semipellucid, smooth, white Nucleus
wanting; remaining whorls about <>',,, moderately convex, slightly angular just below the deep
suture, which seems to be margined interiorly, at least I sec a margin shining through the shell;
sculpture consisting of verj faint, often irregular orowth-striae and a few varices, which seem
to be often faint, but of which 3, higher on the spin-, are more conspicuous, on what is now
the left side of the ventra] face of the shell; last whorl rather elongate, without angle. Aperture
oval, angular above, its outer margin regularly curved, rather blunt, thickened interiorly by a
layer of shelly matter, basal margin rounded, columellar margin nearly straight, but thickened a
about the middle and slightly reflected over what may scarcely be named an umbilical slit.

Alt. S';,;. diam. 3»/ti apert. alt. 21 ,. lat. i1,, Mill.

This new species is unlike any described form. It is characterized by its comparativelj
short, inflated shape. With a few of the preceding species it might perhaps bc: placed by some
authors in the genus Subularia. 1 have restricted that group to the species named Leiostraca
by Adams.

Subularia Monterosato.

1. Subularia bivittata II. «X. A. Adams.

II. & .\. ADAMS. Genera of recent Mollusca, Vol. I, p. 239.

Adams. Sow. Thes. Conch. Vol. II, p. 804, PI. 170, fig. 18, 19.

R.EEVE. Conch. Ie. Vol. XV, Leiostraca, fig. 6.

TRYON. Man. of Conch. Vol. VIII, p. 279. PI. 70, fig. 70.

CLESSIN. Martini-Chemn. Conch. Cab. Ed. II, Vol. I, Eulimidae, p. 41, PI. 8, fig. 3.

Stat. 519. 6° i6'.5 S., H4°37'E. Java Sea. 82 M. Fine yellowish-grey mud. 1 Spec.

in (l.c.) says: "Vaterland?", though Adams (Thes. Conch.) and Tryon (1. c.) quoti
1". The Siboga-specimen has heen dredged considerably more southwards.

2. Subularia} circumstriata n. sp. PI. XVII, fig, 6.

Stat. 208. 5 39'S., 1220 12' IC Banda Sea. 1880 M. Solid green mud. 1 Spec.

Shell fusiform, thin, white (probably bleached) nucleus slightly worn, but apparently
heterostrophe, postnuclear whorls about 5, those forming the spire, a linie convex, separated
by a deep, channelled suture. Last whorl elongated, narrow below. Sculpture consisting of fine

237

growth-striae, sligfhtlv stronger at irregular intervals, rendering the surface folded, but forming
no ribs, and a few indistinct varices; spiral sculpture : a fine raised line at some distance below
the suture, a few distant, impressed striae at the lower part of each whorl and very fine
microscopic striae on the whole surface; last whorl with abouth 16 impressed striae, beginning
a little above the periphery, becoming stronger near the base. Aperture strongly broken, part
of the outer and even of the columellar margin wanting. Outer margin probably thin, regularly
curved, columellar margin rather straight above, tortuous below, reflected towards the left.
Shape of aperture, as far as may be judged, elongate, acutely angular above.

Alt. 83/4 (but may have been more), lat. 3-, apert. alt. 4x/4 Mill.

A very puzzling specimen, and were it not for it peculiar characters, I should not have
named and described it; in shape it resembles 6". Mctcalfci A. Ads., but it is more ventricose
than my specimens of that species from Lifu, with a much longer last whorl, a different suture,
nay, differing in every particular. lts spiral striation is an exceptional feature in the genus, and
it is much to be regretted, that the base of columella is wanting, for if this were present, it
might prove to be bent towards the left and backwards, which would locate the species in the
genus or subgenus Bacula H. and A. Adams (1863) containing Arcuella mirifica Nevill (Journ.
Béng. Soc. Vol. 43, 1S74, PI. 1, fig. 10, copied by Tryon Man. of Conch. Vol. YIII, PI. 70,
fig. 70) which latter species is also spirally striated, with a distinct subsutural zone; but though
the columella is tortuous below and so it might be that it would terminate in an angle of the
same construction as that of B. mirifica • this seems to be too bold a supposition, to locate
it in that genus. Untill fresh or at least complete specimens have been collected, this species
will remain one of the numerous enigmas amongst the difficult Gymnoglossa. If it has really lived
at the great depth of 1886 M., the probability of getting more materials, will not be very great.

Niso Risso.

1 . Niso venosa Sowerby.

SoWERBV. Proc. Mal. Soc. Lond. Vol. I, 1895, p. 279, PI. 18, fig. 10, n.

Stat. 4. Djangkar (Java). 9 M. Coarse sand. 1 Spec.

Stat. 51. Madura-bay, 69 — 91 M. Fine grey sand, coarse sand with shells and stones. 1 Spec.

Both specimens are very young and it is only by comparison with a specimen from
the original locality, received from the author, that I was able to identify them. The smallest
specimen, from Stat. 51, has only a length of 51/. Mill. and but very faint traces of "the bright
reddish-brown, vein-like lines which here and there cross the whorls". Indeed I see but one brown
line at the upper part of the aperture and two short lines below the suture of the last whorl,
the upper whorls being uniformly white, with the spiral, supra-sutural line, which even is wanting
on the uppermost whorls. However this is also the case in the typical specimens, as far as may
be judged after one specimen that has lost its nuclear whorls. The specimen from Stat. 4 is a
slightly bleached shell. Clessin seems not to have noticed this species though his monograph
has been published in 1902.

5

2. .\ . n. sp. PI. XVII, fig. - .

St.tt. 51. Madura-bay. 69 91 M. Fine rej and, coralsand with shclls and 1 Spec,

Bougainville Strait. 141 M. Fine and coai ie sand with dead

-.llclls. 1 S]

Shell pyramidal, solid, smooth, porcellaneous, white, umbilicated. Whorls i.j, slowly

slightly convex, separated by a conspicuous suture; last whorl angulated at the

hery, by a slightly cordlike keel; base convex, with a strong keel bordering the umbilicus,

this latter is pervious, funnel-shaped, with a rather strong keel interiorly along its wall; this

is crenulated by rounded crenules, about 10 in last whorl, considerably diminishing the

width of the umbilicus. Practically 1 sec no sculpture, but a few growth-striae, which are for

the majority very faint and rarely have the charact< r of very indistinct varices.

Aperture elongately subrhombic, protracted below, with an acute angle above, a thin,
regularly arched outer margin, scarcely angulated by the peripheral keel; base strongly angular
by the terminating of the keel bordering the umbilicus, columellar margin curved, concave, a
little reflected, scarcely angulated by the umbilical keel.

Alt. 12. lat. 5'-; apert. alt. (obl.) 3, lat. 2; entrance of umbilicus 2 Mill.

This new species has a superficial resemblance with X. candidula, but is much smaller
and that species has a rounded last whorl, it resembles in shape .Y. goniostoma, but that species
is still larger, more elongated and quite different in colour. I have named it in honour of
Mr. EDGAR A. Smith, the well-known keeper of the mollusca in the British Museum.

Mucronalia A. Adams.

1 . Mucronalia gracilis Pease.

l'i \-i . American Journ. of Conch. Vol. III, p. 295, PI. 24, fig. 27.
TRYON. Man. of Conch. Vol. VIII, p. 284, PI. 70, fig. 4.

SCHEPMAN, in Schepman & Nierstrasz. Parasit. Prosobranch. d. Siboga-Expedition, Leiden,
1909, p. 2.

Stat. [31. Beo, Karakelang-islands. 13 M. 1 Spec. on Echinothrix diadema L.

The only specimen seems to be still young, it agrees very well with the figure of Tryon,
which i^ a copy "f the original one. but it is smaller, being only about 3 instead oi | Mill..
the number of whorls 1 about 7; agrees with that of the description, but an adult specimen in
my collection, has a larger number of whorls.

2. Mucronalia philippinarum Sowerby.

iWERBY. Proc. Mal. Soc. Lond. Vol. I\', p. 127, PI. 11, fig. 5.
S» 111 ï'MAN. in Schepman & Xierstrasz. Parasit. Prosobranch. d. Siboga-Expedition. Leiden,

■ 3-
Stat. 220. Pasir Pandjan I coast of Binongka. Reef. 1 Spec. on Heterocentrotus iiuwiil-

latus Lin.

The specimen agrees as well with SoweRBY's description and figure, as with a specimen

6

239

from Cebu received from the author, though it is slightly smaller than the latter; this may
depend on age, but the general aspect and the particulars of the suture are the same.

3. Mucronalia eöurnca Deshayes.

DESHAYES. Moll. du Réunion, p. 57, PI. 7, fig. 25.
TRYON. Man. of Conch. Vol. VIII, p. 290, PI. 71, fig. 43.

KÜKENTHAL. Abh. Senckenb. Gesellsch. 1898, p. 1, Tf. 1, fig. 2, 3; Tf. 3, fig. 14.
SCHEPMAN, in Schepman & Nierstrasz, Parasit. Prosobranch. d. Siboga-Expedition, Leiden,
1909, p. 3.

Stat. 254. s°4o'S., 132° 26' E. Arafura Sea. 310 M. 1 Spec. on Ophiothrix deposito. Koehler.

Unfortunately the only specimen was broken, consequently the identification slightly
doubtful, however the upper whorls and texture of shell agree with the numerous specimens
I have seen. Deshayes and Tryon (1. c.) have described the species as a Stilifer. The Siboga-
specimen is provided with an operculum.

4. Mucronalia Mittrei Petit.

PETIT. Journ. de Conch. Vol. II, 1S51, p. 27, PI. 2, fig. 8, 9.
Tryon. Man. of Conch. Vol. VIII, p. 290, PI. 71, fig. 42.

Schepman, in Schepman & Nierstrasz. Parasit. Prosobranch. d. Siboga-Expedition, Leiden,
1909, p. 3.

Stat. 312. Saleh-bay, North coast of Sumbawa. 274 M. 1 Spec. on Oplüotlirix crassispina Koehler.

By its shape, especially by that of the penultimate whorl, which is uncommonly developed,
I cannot distinguish the shell from the species described by Petit as Stylifer Mittrei, only the
Siboga-specimen is much smaller. Petit had only one specimen, without exact indication of
locality, and he did not know if it were a parasite; probably the operculum was wanting, at
least Petit does not mention it. With a view on the preceding species it is not strange that
this species should be referred to the genus Mucrottalia, on account of the operculum in the
Siboga-specimen. Moreover its other conchological characters, sufficiently agree with those of
the species dealed with sub 2 and 3, to unite them in the same group. It may be even the
question, if after all so many species will stand, when more materials will have been collected.
Length of shell 6 MM., breadth 4 Mill.

5. Mucronalia parva Schepman. PI. XVII, fig. 1.

SCHEPMAN, in Schepman & Nierstrasz. Parasit. Prosobranch. d. Siboga-Expedition, Leiden,
1909, p. 4.

Stat. 312. Saleh-bay, North coast of Sumbawa. 274 M. 3 Spec. with the preceding species.

Shell small, elongated-oval, imperforate, white, smooth ; whorls about 6 of which the
two apical ones are mucronate, the other whorls are broader, strongly convex, with a deep
suture, last whorl less convex. Aperture ovate, with an acute angle above, right margin thin,
considerably flexuous, columella arched ; a thin layer of enamel on the body whorl. Operculum
thin, horny.

7

.. l.it. i (; apert. alt. i Mill.

This resemblance with the preceding one, but is much more slender,

it is nol the juvi ate, for it should never reach the breadth of thai species, if it proved

to be thi this would be an extraordinary case of dimorphism in Mollusca; only the

that it has been found on the same animal, is a reason to be cautious. Mucronalia

■ ':■'.'.. Proc. Mal. Soc. Lond. VI, p. 163, fig. 13) is also a specii similar by lts size

ape, but with cylindrical whorls.

Mucronalia varicosa Schepman. PI. Wil. fig. 2.

SCHEPMAN, in Schepman Cs: Nierstrasz. Parasit. Prosobranch. d. Siboga-Expedition, Leiden,

•• 4-

i' ;. i :.'.;>.. i30°47.5 1-".. War New Guinea. 32 M. 2 Spec. on Astrochalcis tubercu-
losns Koehler, 1 loosened <>ne and 4 specimens without exact Locality, perhaps
from the same station.

Shell small. oval, imperforate, white, rather smooth, with very line growth-striae and a few
rihlike varices on the last whorl. Whorls aboul <>. of which the two apical ones are mucronate,
the other whorls are convex with a deep marginate suture. Aperture subovate, its upper angle
moderatel) acute, right margin thin, slightly expanded, regularly flexuous, stronger so near the
upper part, columellar side slightly arched, a little thickened near the base, with a thin layer
namel on the bodywhorl. < >perculum thin. horny.

Long. 4. lal. :' .. to 2 ,; apert. alt. 21/i Mill.

The species varies slightly in shape, some specimens being more swollen than others,
which may depend on sex; the varixlike striae on the last whorl are remarkable, they remind
thos< "t Stilifer variciferus Hedlcy (Mem. Austral. Museum, Vol. III. p. 411. fig. 5), but that
is quite another shell, belonging to the section of exaratus. These varices probably result of
former margins, which by being expanded, caused these rihlike processes.

After this description was written I found a fine specimen from Stat. 164. amongsl the
Eulimidae, hut this was loosened and consequently not immediately recognizcd as a parasite,
lts length is ~,[.,: Mill. and it has the varices very wel! developed.

Stilifer Broderip.

The description of the soft parts or animal of Stilifer are rather different from each
other; if one compares the description of Stilifer Turtoni Brod. by Jeffreys (British Concho-
logy, Vol. I\'. ]). 195) and bis figures of the animal (1. c. PI. 3, fig. 2), with that of Stilifer
celebensis Kükenthal (Abh. Senckenb. Gesellsch. band 24, [898, p. 6, PI. 1, fig. 6; PI. 3. lig. 16)
one would ly think that the authors deal with the same gfenus.

&'

1. Stilifer sp.

S' HEPMAN, in Schepman & Nierstrasz. Parasit, Prosobranch. d. Siboga-Expedition, Leiden,

Stat. 300. 1 ■ . 1 E. Timor Sea. 918 M. 2 Spec. <>n Aspidodiadema tonsum A

8

241

Unfbrtunately both specimens are defective, the spire of the shells being wanting; as
they have a very fragile appearance, I was not able to observe them sufficiently, to give even
a provisional description, nor could I identify them with any of the known species of Stilifer
or Mucronalia. On account of the lobes I have located the species in the genus Stilifer.

2. Stilifer sibogae Schepman. PI. XVII, fig. 3, 4.

SCHEPMAN, in Schepman & Nierstrasz. Parasit. Prosobranch. d. Siboga-Expedition, Leiden,
1909, p. 5.

Stat. 153. o° 3'.8 N., I30°24'.3E. Bougainville Strait. 141 M. 1 Spec. on Salmacis Dussu-

mieri Agass.
Stat. 164. i°4i'.5 S., i30°47'.5 E. Near New Guinea. 32 M. 4 Spec. on Pleurechinus macu-

latus Mort.
Stat. 178. 2° 40' S., I28°37'.5E. Ceram Sea. S35 M. 1 Spec. on Prionechinus sagittiger Agass.

Shell small, oval, imperforate, white, smooth, with very fine growth-striae and traces of
still much finer spiral striae; whorls about 6, of which the two apical ones are mucronate and
in some specimens of a brown tinge, in others white (bleached?); the subsequent whorls are
more or less convex and separated by a deep, margined suture. Aperture broadly ovate, with
a sharp angle above, right margin thin, regularly arched if seen in the aperture, nearly straight
if seen laterally, columellar margin strongly curved, thin, running without angle into the basal
margin, with a thin layer of enamel on the bodywhorl. The aperture is placed very oblique
on the axis of the shell. No operculum.

Long. 31/,,, lat. 21/,,; apert. alt. i1/,, lat. about i'/t Mill.

Though the depth on which the specimens have been caught, varies considerably. I have
found no reason to describe more than one species, those from Stat. 164 are smaller and have
white nuclear whorls, but I find no other characters to separate them; the convexity of the
whorls and consequently the more a less elongated shape of the shell, may depend on sex.

Fam. Pyramidellidae.
Pyramidella Lamarck.

1. Pyramidella dolabrata Linné.

Linné. Syst. Nat. Ed. X, p. 760, Nu 522.

KlENER. Coq. Viv. Vol. IX, Pyramidella, p. 3, PI. I, fig. 2 [terebellum).

ADAMS. Sow. Thes. Conch. Vol. II, p. 805, PI. 171, fig. 1, 2, 3.

REEVE. Conch. Ie. Vol. XV, Pyramidella, fig. 13.

Tryon. Man. of Conch. Vol. VIII, p. 300, PI. 72, fig. 71—74.

CLESSIN. Martini-Chemn. Conch. Cab. Ed. II, Vol. I, Eulimidae, p. 48, PI. 11, fig. 1.

Stat. 93. Pulu Sanguisiapo, Tawi-Tawi-islands, Sulu Archipelago. 12 M. Lithothamnion-bottom,

sand and coral. 2 Spec.
Stat. 274. 5°28'.2S., I34°53'.9E. Near Aru Islands. 57 M. Sand and shells, stones. 1 Spec.

v. Martens who quotes the species, with the name terebellum from Mauritius and Indian

9

SIROGA- EXPEDITIE XLIXC. i-,

- 1-1

an Ni.' on, Malaj Archipelago Moll. Mauritius, p. joi), says: "Es ist mir nicht

möglich, west- and ostindische Exemplare bestimmt zu unterscheiden". The Siboga-specimens,
in accordance with this view, are more like doladrata, the name mainly taken for the Wesl
Indian specimens, than like terebellum.

2. Pyramidella Milda) ventricosa Quoy & Gaimard.

iy and Gaimard. Voy de l'Astrol. Zool. PI. 65, fig. 17.
KlENER. Coq. Viv. Vol. IX. Pyramidella, p. 4, PI. 1, fig. 1.
ADAMS. Sow. Tli,-. Conch. Vol. II. p. 806, PI. 171. fig. 13, 15.
ki nch. Ie. Vol. XV, Pyramidella, fig. 15.

TRYON. Man. of Conch. Vol. VIII, p. 299, PI. 72, fig. 63, 64.

5SIN. Martini-Chemn. Conch. Cab. Ed. II, Vol. I, Eulimidae, p. 55. PI. 13, fig. 2.

47 Bay of Bima, near South fort. 5 5 M. Mud with patches of fine coralsand. 1 Spcc.
.;. 86. Dongala, Palos-bay, Celebes. i M. Fine grey mud (rivermud). 1 Spcc.

Thi nens are very young. Many authors quote Gi 1 rin as the author of this species.

As I was not able to settle the question, I foliowed the recent opinion of Daii. and Bartsch
(Synopsis of the Genera etc. of the lam. Pyramidellidae, in Proc. Biol. Soc. Washington Vol.
XVII, p. 4), wiid quote however only the name of Quoy.

3. Pyramidella (Lonchaeus) turrita A. Adams.

ADAMS. Sow. Thes. Conch. Vol. II, p. 807, PI. 171, fig. 17.

Reeve. Conch. Ie. Vol. XV, Pyramidella, fig. 3.

TRYON. Man. of Conch. Vol. VIII, p. 301, PI. 72, fig. 84, 85.

Clessin. M rtini-Chemn. Conch. Cab. Ed. II, Vol. I, Eulimidae, p. 55, PI. 13, fig. 1.

Stat. 513. East ><( hangai Besar, Saleh-bay. Up to 36 M. Sand, coral aiul mud. 10 Spcc.

The quoted localities I find, are: Albrochos Island, North Australia (Adams, Reeve,

New Caledonia (Tryon, 1. c), Lifu (Melvill and Standen, Cat. tiadf. Coll. of

shells from Lifu and Uvea, Journ. Conch. 1895, p. 122). Funafuti (Hedley, Mem. Austr. Mus.

Vol. III. 1899, p. 412. Queensland (Hedley, Proc. Lin. Soc. New South Wales, 1907, Vol.

32, p. 482); though these localities are all Australian, it is not strange to find the species also

Sumbawa, in the Southern part of the Malay Archipelago.

4. Pyramidella (Otopleura) auriscati Chemnitz.

Cm 1 ch. 1 ab. Vol. XI. p. 20, PI. 117, fig. 1711, 12.

Kil oq. Viv. Vol. IX. Pyramidella, p. 5, PI. 1. fig. 4 [plicai

Ad rh -. Conch. Vol. II, p. 812, PI. 172, fig. i, 2.

REEVE. Conch. Ie. Vol. XV, Pyramidella, fig. 21.

'I . .Man. of C.nch. Vol. VIII. p. 305, PI. 73, fig.

CLESSIN. Martini-I hemn. Conch. Cal I ■ II, Vol. I, Eulimidae, p. 70, PI. 14, fig. 5.

Stat. },;. Sailus ketjil, Pal nds. Up to 2; M. Coral and coralsand. 3 Spcc.

it. 313. Mast of Dai ar, Saleh-bay. Up to 36 M. Sand. coral and mud. 1 Spcc.

243

Syrnola A. Adams.
i. Syrnola elegans A. Adams.

A. Adams. Sow. Thes. Conch. Vol. II, p. 808, PI. 171, fig. 19.

REEVE. Conch. Ie. Vol. XV, Pyramidella, fig. 2.

TRYON. Man. of Conch. Vol. VIII, p. 306, PI. 73, fig. 7.

CLESSIN. Martini-Chemn. Conch. Cab. Ed. II, Vol. I, Eulimidae, p. 60, PI. II, fig. 2.

Stat. 104. Sulu-harbour, Sulu-island. 14 M. Sand. 1 Spec.

The only specimen is not intact, the spire and aperture being slightly damaged. I owe
the identification to Mr. J. C. Melvill.

2. Syrnola sp.

Stat. 66. Bank between islands of Bahuluwang and Tambolungan, south of Saleyer. 8 — 10 M.
Dead coral, Halimeda, Lithothamnion. 1 Spec.

This specimen is too bad for identification or description, the nuclear whorls are wanting,
the mouth is severely damaged.

3. Syrnola sp.

Stat. 178. 2°4o'S., I28°37'.5E. 835 M. Blue mud. 1 Spec.
Same observation as for the preceding species, the shell is really only a fragment.

Elusa A. Adams.
1. Elusa subcarnca n. sp. PI. XVII, fig. 8.

Stat. ij. Sailus ketjil, Paternoster-islands. Up to 27 M. Coral and coralsand. 1 Spec.

Shell subulate, gradate, solid, light flesh-coloured, rather shining. Nucleus wanting, sub-
sequent whorls about 8, at first rapidly increasing in breadth, than subequal, rendering the shell
subcylindrical ; the whorls are separated by a conspicuous suture and are angular just below it.
Sculpture consisting of broad, slightly convex ribs, with distinct intermediate grooves, number
of ribs about 20 on last whorl, moreover there are very fine growth-striae, last whorl elongately
rounded. Aperture oval, angular and even canaliculate above, rounded below, with a blunt,
only slightly arched outer margin ; columellar margin arched with a rather strong plait in its
upper part, columellar and outer margins connected by a thick layer of enamel on the body-
whorl. Interior of aperture with rather coarse lirae, terminating at some distance from the outer
margin. Columellar margin slightly reflected over an umbilical slit.

Alt. 97„, lat. 21/,; apert. alt. i3/4, lat. 1 Mill.

I know no species to which this new one is nearly allied ; it is remarkable for its sub-
cylindrical shape and fiesh-colour.

- 1 1

ü. sp. PI. XVII, fig. 9.
5., 119 ; ; I 5a> 159 M. Globigerine ooze. ; S]

ilate, rather solid, yellowish-brown, shining. Nuclear whorls eroded, subsequent
whorl ieparated b) a conspicuous suture in a rather broad channel, caused by the

the whorls just below and stil] stronger above the suture; the whorls are nearl)
bul slightlj convex towards their base. Sculpture consisting of broad, flat ribs on the
r whorls, becoming faint on the fourth whorl and nearly disappearing on the subsequent
. with the exception of a few occasional ribs; moreover the shell is covered with very fine
growth-striae and extremely fine spiral striae, only visible under a strong lens; last whorl with
an obtuse angle near the base and in some specimens a few stronger spiral striae below the
angle. Aperture ovate, angular above, rounded below, with a thin, nearl) straight outer
margin, columellar margin regularlv curved, slightly reflected, no umbilical slit; the margins an-
connected by a moderately thick layer of enamel; interior of aperture smooth.
Alt. 10, lat. 2 , : apert. alt. 21 ;. lal. 1 ! , Mill.
Alt. 1 1. hu. 2 , : apert. alt. 23 ., lat. 1 '/, Mill.

A very puzzling species, externally resembling an /{///sa hut without columellar plait.
I ha. I two specimens to Mr. Melvill, who writes about it : aI incline to Elusa if not a

abnormal Eulimella\ the longitudinal riblets of the apical whorls are like Elusa but there
is no columellar plait visible, the apex seems heterostrophe, the brown colour is like Elusa also".
As t'. the plait, 1 have opened three whorls of a specimen, but could not detect tracés of a
plait. Should we consider the species as an abnormal Elusa, or as an abnormal Eulimella, or as
a representative of a hew group? In accordance with Mr. Melvill's predominant view, I have
foliowed the fust method, without being quite certain, that it will prove to be the right manner.

Eulimella Forbes.
1. Eulimella} sibogae n. sp. PI. X\' II, fig. 10.

Stat. 52. (j '3 .4 S., 1 190 5^-7 I— Savu Sea. 959 M. Globigerine ooze. 1 Spcc.

Shell rather large for the genus, subulate, smooth, yellowish-white. Nuclear whorls a

little eroded, subsequent whorls ;!;,, slightly convex, separated by a distinct suture. Sculpture

of fine and coarser growth-striae, which laiter form however no distinct ribs, crossed

by very indistinct spiral striae, scarcely perceptible on many parts of the shell: last whorl

elongately-rounded. Aperture mot quite intact ovate, angular above, outer margin thin, regularly

arched, l^ase probably rounded, but subangular, perhaps 1>\- the partly broken margin); columellar

margin straight, slightly reflected, nearly covering a tracé of an umbilical slit. Interior ol

mooth.

Alt. 1 ; apert. alt. 28/4. lat. 1 ';, Mill.

This is also a very dubious species, it is nearly too bad tbr description, in so difficult
a group, but still in too good condition, to Ik; neglected, s" it may 1»- located here, untill
further investigation will clear up its somewhal obscure position in the system.

12

245

Turbonilla Risso.

i. Turbonilla subcylindrica n. sp. PI. XVII, fig. n.

Stat. 102. 6° 4'. 1 N., i20°44'E. Sulu Sea. 535 M. Fine, yellow sand. 1 Spec.

Shell rather large, subcylindrical, attenuate towards the spire, white, with a faint
yellowish-brown band at the upper part of the whorls, upper whorls more brown. Nuclear
whorls bulbous, smooth, abruptly turned to the left, consisting of a little more than one lateral
volution; postnuclear whorls about n1/», with a deep suture, making the shell subgradate,
especially the upper whorls. Sculpture consisting of substraight ribs (about 2 1 on last whorl),
which are rather broad and are separated by large interstices, about as broad as the ribs, but
not deep ; moreover I see a microsculpture consisting of very fine growth-striae and still finer
spiral striae, and traces of a slight contraction in the upper part of each whorl, especially of
the upper ones, scarcely appreciable in the lower whorls. Last whorl elongate, rounded below.
Aperture oval, with an angle in its upper part, a thin, subsinuous outer margin, and arched
columellar margin, with an oblique plait above the middle, and is reflected below. No traces
of an umbilical slit.

Alt. io1/*, lat. 2; apert. alt. i1/,, lat. 5/6 Mill.

This new species is allied to Turbonilla templaris Melv., but it is much larger, even
than a specimen which I owe to the liberality of the author (long 61/,, Mill.) more cylindrical
and less contracted at some distance below the suture, moreover that species is uniformly glassy
white, whereas the new species is faintly banded.

13

PLATE XVII.

Fig. i. Mucronalia paria Schepman.

Fig. .:. Mucronalia varicosa Schepman.

Fig- 3- Stilifer sibogae Schepman juv.

Fig. 4. Stilifer sibogae adult specimen on Salmacis Dussumieri Ang.

Fig. 5. Eulima Melvilli n. sp.

Fig. 6. Subularia circumstriata n. sp.

Fig- "• Afaö Smithi n. sp.

8. Elusa subcarnea n. sp.

Fig. 9. lilitsa dubia n. sp.

Fig. 10. Eulimella sibogae n. sp.

Fig. 11. Turbonilla subcylindrica n. sp.

:h:

Siboga-Expeditie. XLIX. i. M. M. Schepman, Prosobranchia

k •

b

XVII

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Fa P. W. M. Trap impr.

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RÉSULTATS DES EXPLORATIONS
ZOOLOGIQUES, BOTANIQUES, OCÉANOGRAPHIQUES ET GÉOLOGIQUES

ENTREPRISES AUX
FNDES NÉERLANDAI8E3 ORIENTALE3 en 1899 1900,

a bord du 8IBO&A

SOUS LE COMMANDEMENT DE

G. F. TYDEMAN

PUBLIÉS PAR

MA.X WEBER,

Chef de 1'expédition^

*I. Introduction et description de 1'expédition, Max Weber.
*II. Le bateau et son équipement scientitique, G. ¥. Tydeman.
*111. Re'sultats hydrograpkiques, G. F. Tydeman.
IV. Eoramiuifera, F. W. Winter.
*l\öis. Xenophyophora, F. E. Schulze.
V. Radiolaria, M. Hartmann.
*VI. Porifera, G. C. J. Vosmaer et I. Ijima ').
VII. Hydropolypi, A. Billard.
*VIII. Stylasterina, S. J. Hickson et MÜS H. M. England.
*IX. Siphonophora, Miles Lens et van Riemsdijk.
*X. Hydrouiedusae, O. Maas.
*XI. Scypbomednsae, O. Maas.
* XII. Ctenophora, M"e F. Moser.

•XIII. Gorgonidae, Alcyonidae, J. Versluys, S. J. Hickson et
XIV. Pennatulidae, S. J. Hickson. [O. C. Nutting').

XV. Actiniaria, P. Mc Murrich.
*XVI. Madreporaria, A. Alcock ') et L. Dode r lei u.
XVII. Antipathavia, A. J. van Pesch.

XVIH. Turbellaria, L. von Gr af f et R. R. van S tammer.
XIX. Cestodes, J. W. Spengel.
*XX. Nematomorpba, H. F. Nierstrasz.
*XXI. Chaetognatha, G. H. F o wier.
XXII. Nemertini, A. A. W. Hubrecht.
XXIII. Myzostomidae, R. R. von S turn m er.
XXIVi. Polychaeta errantia, R. Horst.

XXIV'2. Polychaeta sedentaria, M. Caullery et F. Mesnil.
*XXV. Gephyrea, C. Ph. Sluiter.
*XXVI. Enteropueusta, J. W. Spengel.
*XXV1A«. Ptcrobranchia, S. F. Har nier.

XXVII. Brachiopoda, J. F. van Beminden.
XXV III. Polyzoa, 'S. F. Har m er.
*XXIX. Copepoda, A. Scott ').
*XXX. Ostracoda, G. W. Muller.
*XXXI. Cirrhipedia, P. P. C. Hoek').
XXXII. Isopoda, H. J. Hansen.
XXX111. Amphipoda, Ch. Pérez.
*XXX1V. Caprellidae, P. Mayer.

XXXV. Stomatopoda, II. J. Hansen.
*XXXVI. Cumacea, W. T. Calman.
XXXVII. Schizopoda, H. J. Hansen.
XXXVIII. Sergestidae, H. J. Hansen.
XXXIX. Decapoda, J. G. de Man.
*XL. Pantopoda, J. C. C. Loman.
XLI. Halobatidae, J. Th. Oudemans.
*XLII. Criuoidea, L. Döderlein ') et C. Vaney.
*XLIII. Echinoidea, J. C. H. de Meijere.
*XLIV. Holothurioidea, C. Ph. Sluiter.
*XLV. Ophiuroidea, R. Kohier.
XLVI. Asteroidea, L. Döderlein.
*XLVII. Solenogastres, H. F. Nierstrasz.
*XLVIII Chitonidae, H. F. Nierstrasz.
*XLIX'. Prosobranchia, M. M. Schepman ').
*XLIX'2. Prosobranchia parasitica, H. F. Nierstrasz et M. M.
*L. Opisthobranchia, R. Bergh. [Schepmau.

*LI. Heteropoda, J. J. Tesch.
*LII. Pteropoda, J. J. Tesch.

LUI. Lamellibranchiata. P. Pelseneer et Ph. Dautzenberg.
*LIV. Scaphopoda, M'lo M. Boisse vain.

LV. Cephalopoda, L. J o u b i n.
*LVI. Tunicata, C. Ph. Sluiter et J. E. W. Ihle ').
LV1I. Pisces, Max Weber.
LVIII. Cetacea, Max Weber.
LIX. Liste des algues, Mme A. Weber.
*LX. Halimeda, MHe E. S. Barton. (Mme E. S. Gepp).
*LXI. Corallinaceae, Mme A. Weber et M. F os 1 ie.
LXII. Codiaceae, A. et Mme E. S. Gepp.
LXHI. Dinoflagellata. Coccosphaeridae, J. P. L o t s y.
LXIV. Diatomaceae, J. P. Lotsy.
LXV. Deposita marina, O. B. Böggild.
LXVI. Résultats géologiques, A. Wichmann.

Siboga-Expeditie

•3P

THE

OF THE SIBOGA EXPEDITION

BY

M. M. SCHEPMAN

Bosch en Duin near Utrecht (Holland)

PART III

GYMNOGLOSSA

With 1 plate

Monographie XLIX1^ of:

UITKOMSTEN OP ZOOLOGISCH,
BOTANISCH, OGEANOGRAPHISGH EN GEOLOGISGH GEBIED

verzameld in Neder landsch Oost-Indië 1899 — 1900

aan boord H. M. Siboga onder commando van
Luitenant ter zee ie kl. G. F. TYDEMAN

UITGEGEVEN DOOR

^E

Dr. MAX WEBER

Prof: in Amsterdam, Leider der Expeditie

(met medewerking van de Maatschappij ter bevordering van het Natuurkundig
Onderzoek der Nederlandsche Koloniën)

BOEKHANDEL EN DRUKKERIJ

E. J. BRILL
LEIDEN

öiC

Publié Décembre 1909

* Les numéros avcc un astérique ont déja paru ; ceux marqués 1) seulement en partie

Voor de uitgave van de resultaten der Siboga-Expeditie hebben
bijdragen beschikbaar gesteld:

De Maatschappij ter bevordering van het Natuurkundig Onderzoek der Nederlandschc
Koloniën.

Het Ministerie van Koloniën.

Het Ministerie van Binnenlandsche Zaken.

Het Koninklijk Zoologisch Genootschap >Natura Artis Magistra" te Amsterdam.

De >Oostersche Handel en Reederij" te Amsterdam.

De Heer B. H de Waal Oud-Consul-Gencraal der Nederlanden te Kaapstad.

M. B. te Amsterdam.

CONDITIONS GÉNÉRALES DE VENTE.

i '. L'ouvrage du „Siboga" se composera d'une série de monographies.

2°. ("es monographies paraitront au fur et a mesure qu'elles seront prêtes.

;:. Le prix de chaque monographie sera différent, maïs nous avons adopté comme base générale du prix de
ventc: puur une feuille d'impression sans fig. flor. o. 15; pour une feuille avec fig. flor. 0.20 a 0.25;
pour une planche noire flor. 0.25; pour une planche coloriée flor. 0.40 ; pour une photogravure flor. 0.60.

4°. II y aura deux modes de souscription :

a. La souscription a l'ouvrage complet.

b. La souscription a des monographies séparécs en nombre restreint.
Dans ce dernier ras, le prix des monographies sera majoré de 25 °/0.

50. L'ouvrage sera réuni en volumes avec titres et index. Les souscripteurs a l'ouvrage complet recevront
ces titres et index, au fur et a mesure que chaque volume sera complet.

*J ± * Souscription Monographies

al'ouvrage complet séparées

ie Livr. (Monogr. XLIV) C. Ph. Sluiter. Die Holothurien der Siboga-Expedition. Mit 10 Tafeln. / 6. — / 7.50

2e Livr. (Monogr. LX) E. S. Barton. The genus Halimeda. With 4 plates „ 1.80 „ 2.40

3e Livr. (Monogr. I) Max Webèr. Introduction et description de 1'expédition. Avec Liste des

Stations et 2 cartes „ 6.75 „ 9. —

4e Livr. (Monogr. II) G. F. Tydeman. Description of the ship and appliances used for scientific

exploration. With 3 plates and illustrations • . . . „ 2. — „ 2.50

5e Livr. (Monogr. XL VII) H. F. Nierstrasz. The Solenogastres of the Siboga-Exp. With 6 plates. „ 3.90 „ 4.90

6e Livr. (Monogr. XIII) J. Versluys. Die Gorgoniden der Siboga-Expedition.

I. Die Chrysogorgiidae. Mit 170 Figuren im Text. „ 3. — „ 3.75

7e Livr. (Monogr. XVI a) A. Alcock. Report on the Deep-Sea Madreporaria of the Siboga-
Expedition. With 5 plates '. . . „ 4.60 „ 5.75

8e Livr. (Monogr. XXV) C. Ph. Sluiter. Die Sipunculiden und Echiuriden der Siboga-Exp.

Mit 4 Tafeln und 3 Figuren im Text „ 3. — „ 3.75

9e Livr. (Monogr. Vla) G. C. J. Vosmaer and J. H. Vemhout. The Porifera of the Siboga-
Expedition. I. The genus Placospongia. With 5 plates „ 2.40 „ 3. —

ioe Livr. (Monogr. XI) Otto Maas. Die Scyphomedusen der Siboga-Expedition. Mit 12 Tafeln. n 7.50 „ 9.50

11e Livr. (Monogr. XII) Fanny Moser. Die Ctenophoren de.r Siboga-Expedition. Mit 4 Tafeln. „ 2.80 „ 3.50

12e Livr. (Monogr. XXXIV) P. Mayer. Die Caprellidae der Siboga-Expedition. Mit 10 Tafeln. „ 7.80 „ 9.75

13e Livr. (Monogr. III) G. F. Tydeman. Hydrographic results qf the Siboga-Expedition. With

24 charts and plans and 3 charts of depths „ 9. — „ 11.25

14e Livr. (Monogr. XLIII) J. C. H. de Meijere. Die Echinoidea der Siboga-Exp. Mit 23 Tafeln. „ 15. — „18.75

15e Livr. (Monogr. XLVa) René Koehler. Ophiures de 1'Expédition du Siboga.

■ ie Partie. Ophiures de Mer profonde. Avec 56 Planches „ 16.50 n 20.50

i6e Livr. (Monogr. Lil) J. J. Tesch. The Thecosomata and Gymnosomata of the Siboga-
Expedition. With 6 plates „ 3.75 „ 4.70

17e Livr. (Monogr. LVIrt) C. Ph. Sluiter. Die Tunicaten der Siboga-Expedition.

I. Abteilung. Die socialen und holosomen Ascidien. Mit 15 Tafeln . . . . . „ 6.75 „ 9. —

18e Livr. (Monogr. LXI) A. Weber— van Bosse and M. Foslie. The Corallinaceae of the Siboga-
Expedition. With 16 plates and 34 textfigures ■ v 12.50 „ 15.50

19e Livr. (Monogr. VIII) Sydney J. Hickson and Helen M. England. The Stylasterina of

the Siboga Expedition. With 3 plates „ 1.50 „ 1.90

20e Livr. (Monogr. XLVIII) H. F. Nierstrasz. Die Chitonen der Siboga-Exp. Mit 8 Tafeln. „ 5.— „ 6.25

2 ie Livr. (Monogr. XLVó) René Koehler. Ophiures de 1'Expédition du Siboga.

2e Partie. Ophiures littorales. Avec 18 Planches v 10.25 „ 12.75

22e Livr. (Monogr. XXVItó) Sidney F. Harmer. The Pterobranchia of the Siboga-Expedition,

with an account of other species. With 14 plates and 2 text-figures „ 6.75 „ 9. —

23e Livr. (Monogr. XXXVI) W. T. Calman. The Cumacea of the Siboga Expedition. With

2 plates and 4 text-figures „ ï.80 v 2.40

24e Livr. (Monogr. LVD*) C. Ph. Sluiter. Die Tunicaten der Siboga-Expedition.

Supplement zu der I. Abteilung. Die socialen und holosomen Ascidien. Mit 1 Tafel. „ —.75 „ i- —

•

» 1*1 i .v :

'1 - -lilllCh

parécs

Rud. Bergh. Di<- Opisthobranchiata der Siboga-Exped. Mit 20 Tafeln. , 11.25 „ 14.10

26« I )tto Maas. Die Craspedoten Medu9en der Siboga-Exp. Mit 14 Tafeln. , 9.25 , 12.50

. 1 J. Versluys. Die Gorgoniden der Siboga-Expedition. 1

II. Die Primnoidae. Mit 10 Tafeln, 178 Figuren ira Text um\ einer Karte. . . „ 12.50 , 16.75

\.\1 G. Herbert Fowler. The Chaetognatha bf the Siboga Expedition.

With 3 plates and 6 charts , 4.20 , 5.25

Mon J. J. Tesch. Die Heteropoden der Siboga-Expedition. Mit 14 Tafeln. f 6.75 v 9. —

30* Livr. Monogr. XXX] G. W. Muller. Die Ostracoden der Siboga-Exped. Mit 9 Tafeln. , 3.50 „ 4.40

3ir I.ivr. (Mom Franz Eilhard Schulze. Die Xenophyophoren der Siboga-Exped.

Mit 3 Tafeln , 2.40 „ 3. —

32» I.ivr. (Mofiogr. LIVi Maria Boissevain. The Scaphopoda of the Siboga Expedition.

With 6 plates and 39 textfigures , 4.80 , 6. —

33e I.i\r. (Monogr. XXVI) J. W. Spengel. Studiën iibêr die Enteropneusien der Siboga-Exp.

Mit 17 Tafeln und 20 Figuren im Text „ 14. — , 17.50

34e Livr. [Monogr. XX) H. F. Nierstrasz. Die Xcmatomorpha der Siboga-Exp. Mit 3 Tafeln. , 2.80 , 3.50

35c Livi \ I II r) Sydney J. Hickson und J. Versluys. Die Alcyqniden der Siboga-
Exped. I. Coralliidse, II. Pseudocladochonus Hicksoni. Mit 3 Tafeln und 16 Figuren im Text. „ 2.20 „ 2.75

36* I.ivr. r. XXXL/.i P. P. C. Hoek. The Cirripedia of the Siboga Expedition.

A. Cirripedia pedunculata. With 10 plates . . . . „ 5.40 „ 6. 75

37e I.ivr. (Monogr. XI. II./ L. Döderlein. Die gestielten Crinoiden der Siboga-Expedition. Mit

In und 12 Figuren im Text . „ 8. — „ 10. —

38e I.ivr. (Monogr. IX) Albertine D. Lens and Thea van Riemsdijk. The Siphonophores

nf the Siboga Expedition. With 24 plates and 52 textfigures „ 13.50 , i^-75

i XLIX'a) M. M. Schepman. The Prosobranchia of the Siboga Expedition.

Part 1. Rhipidoglossa and 1 'ucoglossa, with an Appendix by Prof. R. Rf.rgh.

With 9 plates and 3 textfigures „ 4.80 „ 6. —

40c Livr. (Monogr. XI.) J. C. C. Loman. Die Pantopoden der Siboga-Expedition. Mit 15

In und 4 Figuren im Text . „ 6.25 , 7.80

41e Livr. i.Monogr. LVIr) J. E. W. Ihle. Die Appendicularien der Siboga-Expedition. Mit 4

Tafeln und 10 Figuren im Text „ 4.80 „ 6. —

42^- Livr. (Monogr. XLIX1) M. M. Schepman und H. F. Nierstrasz. Parasitische Proso-

branchier der Siboga-Expedition. Mit 2 Tafeln „ 1.20 „ 1.50

43e Livr. (Monogr. XI. 1X7') M. M. Schepman. The Prosobranchia of the Siboga Expedition.

Part II. Taenioglbssa and Ptenoglossa. With 7 plates 4.50 , 5.60

Livr. (Monogr. XXIXo) Andrew Scott. The Copepoda of the Siboga Expedition.

Part I. Free-swimming, Littoral and Semi-parasitic Copepoda. With 69 plates. . „ 26. — „ 32.50

45e Livr. (Monogr. ].\'l/>) C. Ph. Sluiter. Die Tunicaten der Siboga-Expedition.

II. Abteilung. Die Merosomen Ascidien. Mit 8 Tafeln und 2 Figuren im Text. , 5.75 „ 7.25

r. (Monogr. XLIX', M. M. Schepman. 'The Prosobranchia of the Siboga Expedition.

Tart III. Gymnoglossa. With 1 plate „ 1. — „ — .80

i ll.jr. = Mrk 1.70 = 1 sk. 8 d. = frs 2.12 en ehiffirei arroiulies.