476 



A iu)i qiiite develo|)ed specimen is 8^/^ Mill. in Icntjlh, onc of llie snialk-st ones 7-'/, Mill. 

 'l'his species may be readily tlislini;iiished hy its large size; in shape it resembles A*. pcracula 

 Watson, bul differ>. b\ its armalure of aperlure. 



4. Riu^icula plicifera n. sp. l'I. XXXII, ^l},^ 12. 



Stat. 52. 9''3'.4S., 1 19''56'.7 Iv. Savu-sca. 959 M. Glubi^jcrina od/c. i Spcc. 



Shell small, ovate. witl) short, conical spire, rather smooth, whitish. W'horls about 5, of 

 which about i'/, form a smoolh, inllated nucleus, post-nuclear whorls scarcely convex, separated 

 by a conspicuous suture. Scul|)ture consisiinj^ of 3 spiral, infrasutural lirae, the lower one 

 accompanied by a rather conspicuous «jroove, and of about i 3 ^^rooves from periphery to base ; 

 the infrasutural lirae are crossed by numcrous, fme plicae, occujiying also the upper part of 

 otherwise smooth median zone. Aperture pear-shaped, an^jular above; peristome not developed, 

 columellar side of body-whorl enamelled, without teeth, columella with 2 folds. 



Alt. 4'/,. lat. 3'/,; apert. alt. 27,. lal. 1'/., Mill. 



Though this specimen is not full-grown and consequently the characters of the aperture 

 and even the measurements, have in part no great value, the very peculiar sculpture may serve 

 to recognize this species, if more complete materials might be procured. This sculpture seemed 

 to be too remarkable, not to describe and name the species. 



Fam. PinuNiD.\E. 

 Philine Ascanius. 



1 . Philine qnadripartita Ascanius. 



ASCA.MUS. K. Vctensk. Ak. Stockh. Handl., 1772, p. 329, PI. 10, fig. A., B. 

 Adams. Thes. Conchyl. Vol. II, p. 599, PI. 125, fig. 159. 



PiLSBRY. Man. of Conch. Vol. XVI, p. 10, PI. 9, fig. 1—7, PI. 3, fig. 47—56, {aperta). 

 KOBELT. Martini-Chemn. Conch. Cab. Ed. II, Vol. I, Bullacea, p. 138, PI. 3, fig. i — 6. 



Stat. 251. 5°28'.4S., 132° 0.2 E. Arafura-sea. 204 M. Hard coralsand. 2 Spcc. 



I have applied the name of Ascanius, in accordance with Bergh, in his monograph L 

 of the Siboga-E.xpedition. By examining the gizzard-plates, I found ihat the specimens under 

 consideration, agree with thosc of Ph. (]itadripartita^ and not with those of Ph. riibra Bergh, 

 which that author has recorded from .Stat. 251. 



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