340 



The first measurements are of a perfect, the second of the largest somewhat eroded 

 specimen. This species is nearly allied to T. plicilaminatus Verco (Trans. Roy. Soc. South 

 Austral., Vol. 33, 1909; p. 335, PI. 24, fig. 1, 2) so much, that I thought it might be identical, 

 but Mr. Smith who seems to have compared it with a cotype, says it is different. The Siboga- 

 specimens are larger, have a whorl less, a specimen of about the same size as plicilaminatus 

 has but 6 whorls; the new species is broader in proportion to its length, has as least one 

 lira more and the figure of Verco has only one row of spines, in the new species 3 of 4 lirae 

 may be called spinous. In that species the canal is longer. Trophon segmentatus Verco (1. c. 

 fig. 3) has a shorter canal, a larger number of lirae, but agrees in the more spinelike character 

 of lower scales. 



3. Trophon luculcnhis Reeve. 



Reeve. Conch. Ie. Vol. III, Murex, fig. 127. 



Tryon. Man. of Conch. Vol. II, p. 149, PI. n, fig. 355 [fimbriatus). 



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



The only specimen is young. lts generic position seems to be somewhat uncertain. 

 Unfortunately it is an empty shell. I have a. o. foliowed Pilsbry (Cat. Mol. Japan, p. 4) who 

 locates it in Trophon. 



Murex Linné. 

 1. Murex (Trièulus) nigrispinosus Reeve. PI. XXIV, fig. 6. 



Reeve. Conch. Ie. Vol. III, Murex, fig. 79. 



KOBELT. Martini-Chemn. Conch. Cab. Ed. II, Vol. III, Murex, p. 75, PI. 26, fig. 5. 



SOWERBY. Thes. Conchyl. Vol. IV, Murex, p. 4, PI. 2, fig. 11. 



Tryon. Man. of Conch. Vol. II, p. 78, PI. 9, fig. 109 [tribulus var.). 



Stat. 33. Bay of Pidjot, Lombok. 22 M. and less. Mud, coral and coralsand. 4 Spec. 



Stat. 50. Bay of Badjo, West coast of Flores. Up to 40 M. Mud, sand and shells. 1 Spec. 



Stat. 303. Haingsisi, Samau-ieland. 36 M. Lithothamnion. 5 Spec. 



Some of the specimens are very young and consequently more a less doubtful, however 

 by comparison with the well developed upper whorls of adult specimens from the same localities, 

 I think the identification is right. Cabinet specimens are often too much cleaned to allow a 

 close comparison. As far as I can judge from one specimen of M. trièulus, from the Red sea, 

 Tryon was wrong in uniting them, as the postnuclear whorls in AI. tribulus are scaly, against 

 rounded ribs in M. nigrispinosus, as has been more elaborately explained by Boog Watson 

 in his Challenger Report. 



The radula of a female of this species, much resembles that of M. trièulus, as figured 

 by Troschel, as far as concerns the shape of the basal plate of the median tooth (M), which 

 is slightly convex in the centre of the anterior margin, with prominent angles, the central 

 denticle as well as the lateral ones, which latter are slightly curved outwards, are longer, 

 with an apparently longer small cusp between them, on each side of central denticle ; the 



94 



