

CRUSTACEA. 43 



is sufficient to establish a new species, and still more whether it is 

 advisable to refer specimens from rather a distant country to that 

 species ; in general shape and particularly as regards the fine lines 

 on the upper part of the whorls (rather ill-seen in K. Martin's figure), 

 the specimens from Burma agree, however, so well with that from Java 

 that I have no longer any doubt as to their identity. I may mention 

 that as a matter of course, the specimens from Burma show also the 

 semi-lunar striae marking the growth of the margin. 



On comparing this species with the living Rhizoconus tnallacanus, 

 Hwass, from the Seychelles, 1 found that they are identical and that 

 the doubt expressed as to Conus javanus was well founded. 



CONUS (LEPTOCONUS) iMARGINATUS, Sowerby, Plate X, Fig. 8— 8ft. 



1840. Conus marginatus, Sowerby, Transact. Geol. Soc. London, 2nd ser., vol. V, 



plate XXVI, fig. 36. 



The conical shell has a pretty high spire which consists of at 

 least six whorls; a fine but deep furrow, above which the surface 

 slightly projects, runs along the suture on the anterior part of the 

 whorls, thus giving the spire a kind of shouldered appearance ;iast 

 whorl high and, except for eight revolving fine furrows on its anterior 

 end, perfectly smooth ; aperture narrow; outer lip sharp. 



Locality. — Not rare at Yenangyat. 



Remarks.— -The^peculiar appearance of the pretty high spire dis- 

 tinguishes this species at once. This species is very closely related 

 to Leptoconus insculptus i Klein, from the Andamans, but the latter 

 is easily distinguished by the sculpture of the last whorl, which is 

 wholly covered with fine revolving ribs. 



IV— CRUSTACEA. 

 BALANUS SUBL,EVIS, Sow. 



1840. Balanus sublsevis, Sowerby, Transact.) Geol. Soc. of London, 2nd series, 



vol. V, plate XXV, fig. 3. 

 1853 „ „ d' Archaic and Haime, Descr. des Anim. foss. du groupe 



nummulitique de l'lnde, page 341, plate XXIV, fig. 15, a. 



A cast of a balanus of comparatively large size belongs probably 



( 43 ) 



