It is not without hesitation that I should have identified this specimen, were it not that 

 Smith (1. c.) records the species from the Andaman Islands, a locality still considerably more 

 remote from Japan. The slight differences with my only Japanese specimen may be individual, 

 it agrees in all the chief characters. Though the canal appears to be not complete, the specimen 

 has a total length of nearly 140 MUI., of which 70 Mill. come for the length from the apex to 

 the base of apertural varix, this is nearly in accordance with my Japanese specimen of 160 Mill., 

 which may consequently have been about the length of the Siboga specimen, if complete. It 

 contains the soft parts with operculum. 



5. Murex (Tribuhis) aduncospinosus (Beek) Reeve, var. 



REEVE. Conch. Ie. Vol. III, Murex, fig. 93. 



SOWERBY. Thes. Conchyl. Vol. IV, Murex, p. 2, PI. 1, fig. 4 {tribulus var.). 



Tryon. Man. of Conch. Vol. II, p. 78, PI. 10, fig. 1 14 [ternispina pars). 



Stat. 318. 6°36'.5 S., U4°55'.s E. Java Sea. 88 M. Fine yellowish grey mud. 6 Spec. 

 Stat. 320. 6°5'S., H4°7'E. Java Sea. 82 M. Fine, grey mud. 2 Spec. 

 Stat. 321. 6°5'.sS., 113° 30' E. Java Sea. 82 M. Fine grey mud. 1 Spec. 



The 5 specimens have very narrow rufous lines on the top of the 3 principal lirae, as 

 these lines are scarcely perceptible on dead shells, they may have escaped notice, so I judge it 

 unnecessary to apply a varietal name. 



var. concinna Reeve. PI. XXIV, fig. 9. 



REEVE. Conch. Ie. Vol. III, Murex, fig. 104. 



Kobelt. Martini-Chemn. Conch. Cab. Ed. II, Vol. III, Murex, p. 122, PI. 36, fig. 11. 



Sowerby. Thes. Conchyl. Vol. IV, Murex, p. 2, PI. 1, fig. 5?. 



Tryon. Man. of Conch. Vol. II, p. 79, PI. 11, fig. 122. 



Stat. ■/■]. Borneo-bank. 59 M. Fine grey coralsand. 1 1 Spec. 



The quoted authors did not know the locality of this form. I have quoted Sowerby's 

 description with a note of interrogation, as he says that the rufous lines run at the top of the 

 lirae and though the figures of the other authors seem to have the same arrangement, they 

 do not mention the fact. The Siboga-specimens, which have been verified by Mr. E. A. Smith 

 on account of this circumstance, have the dark lines on the narrow intermediate lirae, between 

 the principal ones. According to this authority it is a variety of M. aduncospinosus. 



The radula of a female specimen of this variety has about 165 rows of teeth, which 

 do not diffier much from those of the allied species described above, the denticles of the median 

 tooth (M) are moderately long and rather thick, resembling in this respect those of AI. tenuispina, 

 the laterals (1) are not much curved. 



6. Murex (Tribuhis) martinianus Reeve. PI. XXIV, fig. 10. 



Reeve. Conch. Ie. Vol. III, Murex, fig. 72. 



Kobelt. Martini-Chemn. Conch. Cab. Ed. II, Vol. III, Murex, p. 59, PI. 9, fig. 3; PI. 22, fig. 7, 8. 

 Sowerby. Thes. Conchyl. Vol. IV, Murex, p. 2, PI. 1, fig. 2 (rarispina). 

 Tryon. Man. of Conch. Vol. II, p. 78, PI. 11, fig. 118 [ternispina pars). 



97 



S1BOGA-EXPEDIÏ1E XLIX 1 d. 45 



