403 



Thoui^h the specimens vary sliohtly, they are without doubt scjjai'ahlc; from tlu- |)rcceclinj^ 

 species, many ot" them are rather juvenile. 



15. P/i'itrofoina (Gciniitula) Kiciicri Doiimet. 



DOUMET. IMagasin do Zool. 1840, PI. lO. 



Reeve. Conch. Ic. Vol. I, Plcurotoma, fig. 56 [cciriiuifa). 



Weinkauff. Martini-Chemn. Conch. Cab. Kd. II, Vol. IV, ricuiotonia, {■>. 15, I'l. 3, fig. i 



(cariiiata). 

 Trvon. Man. of Conch. Vol. VI, p. 173, PL 4, fig. 49 (carinata). 

 Smith. Ann. and Mag. Nat. Hist. Ser. 6, Vol. XVIII, p. -i^C-y-j. 



Stat. 51. Madura-bay. 69 — 91 M. Fine grey sand, coarse sand with sliclls and stones. 2 Spec. 



Stat. 166. 2°28'.5S., I3I°3'.3E. Arafura-sea. 118 M. Hard, coarse sand, i Spec. 



Stat. 212. 5°54'.5S., I20°I9'.2 E. Banda-sea. 462 M. Fine grey and green mud. 2 Spec. 



Stat. 260. Near North point of Nuhu Jaan, Kei-islands. 90 M. Sand, coral and shells, i .Spec. 



Stat. 294. 10° 12'. 2 S., 124° 27'. 3 E. Timor-sea. 73 M. Soft mud with very fine sand. 2 Spec. 



Stat. 306. 8°27'S., 122° 54.5 E. Savu-sea. 247 M. Sandy mud. 4 Spec. 



The specimens from deep water differ slightly from the other ones, those from Stat. 2 i 2 

 have the infrasutural keel less developed, in those from Stat. 306 on the contrary, the sculp- 

 ture is very strong and especially such specimens with short (broken) canal, remind the next 

 species, these specimens are without the usual brown markings, and though this may largely 

 be due to their being dead shells, it seems that the great depth may account for it, for even 

 in the best preserved specimen, I see no trace of it, except in the infrasutural keel and perhaps 

 in one or two of the interstices of the beaded keel. (Cfr. Smith. 1. c. p. 368). 



16. Pleitrotouia (Gevimtila) congener Smith. 



Smith. Ann. and Mag. Nat. Hist. Ser. 6. Vol. XIV, 1894, p. 160, PI. 3, fig. 4, 5. 

 Ann. and Mag. Nat. Hist. Ser. 7. Vol. XIII, 1904, p. 456. 



Stat. 5. 7°46'S., 114° 3o'.5 E. BaH-sea. 330 M. Mud. i Spec. 



Stat. 139. o°ii'S., 127° 25' E. Near Batjan. 397 M. Mud. stones and coral. 2 Spec. 



The specimen from Stat. 5, though the canal seems to be broken, has a length of 

 62 Mill., the greatest length recorded by Smith; another from Stat. 139 is even 66 Mill., the 

 second specimen has a swelling on the upper part of columella. 



17. Plenrotonia (Genimttla) praesignis Smith. 



Smith. Ann. and Mag. Nat. Hist. Ser. 6, Vol. XVII, 1895, p. 4, PI. i, fig. 4. 

 — — Ann. and Mag. Nat. Plist. Ser. 7, Vol. XVIII, 1906, p. 161. 



Stat. 45. 7°24'S., 118° I5'.2 E. Flores-sea. 794 M. Grey mud with some radiolariae and diatomes. 



2 Spec. 

 Stat. 159. o°59'.iS., i29°48'.8 E. Halmahera-sea. 411 M. Coarse sand, i Spec. 



The specimen from Stat. 159 is very young, the nuclear whorls of another young 

 specimen from Stat. 45, though not quite intact, seems to consist of about 2 smooth, rather 



39 



