212 REALIA 8$. 2. 
24. R. insularis (Hydrocena) Crosse. 
.l. imperforata, subgloboso-coniea, tenuis, haud nitida, 
sublaevis, stris incrementi fere inconspicuis impressa, luteo- 
rosea; spira conica apice obtusulo; anfr. 4 convexi, ultimus 
non descendens, basi subrotundatus, spiram superans; apertura 
suboblique semi-ovalis, marginibus disjunctis, convergentibus, 
columellari incrassato, in loco umbilici subcalloso, basali et 
externo simplicibus, acutis. — Long. 1?/,—2, diam. max. 1!/, 
mill.* (C. — Coll. Nr. 14.) 
Hydrocena insularis Crosse in Journ. Conch. XIII. 1865. p. 223. t. 6. f. 7. 
Omphalotropis insularis Pease. in Journ. Conch. XVII. 1869. p. 154. 
Atropis insularis Pease in Proc. Zool. Soc. 1871. p. 476. 
Habitat in insulis Gambier Oceaniae. 
»5. ? R. nitida (Hydrocena) Pease. 1 
.H. testa ovata, pyramidali, nitida, laevi, solhidiuscula; 
anfr. D, convexis, ultimo magno, dimidium longitudinis sub- 
aequante; rima umbilicali perforata; suturis impressis, interdum 
tenuiter marginatis; apertura ovata; perist. simplici, non con- 
tinuo. — Long. 2!/ diam. 2 mill.* (P.) 
Hydrocena  nitidu Pease in Proc. Zool. Soc. 1864. p. 674. 
Assiminea nitida Pease in Journ. Conch. XVII. 1869. p. 165. 
Habitat in insula Huaheine. 
26. R. ovata (Hydrocena) Pease. 7 
.H. t. conico-ovata, solidiuscula, fusco-cornea, perforata, 
laevigata; anfr. b, rotundo-convexis, ultimo duas inter quinque 
partes longitudinis subaequante, subangulato; suturis bene im- 
pressis, vix angulatis; apertura ovata, supra angulata; perist. 
simplici, continuo, margine columellari adnato, juxta perfora- 
tionem rugose sulcato et carinato. — Long. 5, diam. 3 mill.* (P.) 
Hydrocena, ovata. Pease in Proc. Zool. Soc. 1864. p. 674. 
Omphalotropis ovata, Pease in Journ. Conch. XVII. 1869. p. 148. 
-— —  ,Mss.* Pütel Catal. p. 194: Viti Lew. (?) 
Habitat in insula Mangier. 
27. R. abbreviata Pease. 7 
.R. t. ovata, solidiuscula, epidermide brunnea induta; 
anguste umbilicata; longitudinaliter minutissime striata; anfr. 
5—0, rotundato-convexis, ultimo subventricoso, sutura bene 
