iiarrtnv, rmiiuled ribs, about 12 in number on last whorl, crossed by thin liiae in upper part 

 oi whorls and in the basal pari ot last whorl, the low(;r pari ol upper whorls and nieclian 

 part ot" last one being impressedly striate. These lirae in crossing die ribs, make them nodulous 

 lo nearly spinose, slightly crenulate on Iowcm' part, and ai^ain granose on th{^ base of last whorl 

 else the interspaces of the ribs are smooth, but for line growth-striae. Aperture oblong-f)val, 

 rather bluntly angular above; peristome not thick, though thickened e.vteriorly, a little backwards, 

 by a stronger rib, lirate internally, at some distance from the peristome, by about 1 5 lirae ; 

 columellar margin rounded, smooth, with a conspicuous, oblicpie basal foltl and traces of a 

 second one, a little higher on. Canal shallow, wide, slightly directed to the left. 



Alt. 10, lat. 4'Y,; apert. alt. (with canal) 5, lat. 2 Mill. 



This small species is very different from any species I know, but its generic characters 

 agree with those of the known species of P/ws\ unfortunately the dredging consists of more 

 or less fresh shells, without the soft parts; the specimens var)' in the development of the spiral 

 lirae as mentioned above, but in other respects they have all the same specific character. 



Engina Gray. 



1 . Engina astrida Reeve. 



Reeve. Conch. Ic. Vol. Ill, Ricinula, fig. 30. 



Tryon. Man. of Conch. Vol. V, p. 189, PI. 61, fig. 14. 



Stat. 144. North of Salomakiee-(Damar-)island. 45 M. Coral bottom and Lithothamnion. i Spec. 



Reeve did not know the habitat of this species. Smith recorded it from the Andaman 

 isles, V. Martens from Mauritius, Hidalgo from Cebu, the locality of the Siboga-specimen is 

 in accordance herewith. 



2. Engina sinensis Melvill. 



Melvill. Proc. Mai. Soc. Lond. Vol. I, 1895, p. 227, PI. 14, fig. 14. 

 Cat. Hadfield Collection of Shells, 1895, p. 106, PI. 3, fig. 27. 



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

 Stat. 240. Banda. 9 — 45 M. Black sand, coral and Lithothamnion. i Spec. 



The only specimen from Stat. 240, which is in good condition, agrees as much as can 

 be desired with somewhat worn specimens from Lifu ; that from Stat. 33 is not adult, at least 

 the peristome is still thin, it is larger (13Y0 Mill.), the central white band is less developed, it 

 seems to be notwithstanding these differences, only a somewhat larger form of E. sinensis. 



3. Engina histrio Reeve. PI. XXIV, fig. 2. 



Reeve. Conch. Ic. Vol. Ill, Ricinula, fig. 36. 



Tryon. Man. of Conch. Vol. V, p. 189, PI. 61, fig. 19 [alveolata pars). 



Stat. 7. Near reef of Batjulmati (Java). 15 M. Coral and stones. 2 Spec. 

 Stat. 34. Labuan Pandan, Lombok. Reef. 1 Spec. 



61 



