250 CYCLOSTHEMA. 



miveus of Chemnitz. That shell however appears to be accu- 

 rately represented by our Tuhlola nivea, f. 35 and 36. 



3. Reeviana (pi. 255, f. 9, 10), Hinds. — Testa orbicularis, 

 subdiscoidea, mutica ; spira depressiuscula ; anfractibus convexis, 

 longitudinaliter carinnlatis ; carinulis numerosis, superis, distanti- 

 oiibus ; interstitiis liris obliquis corrugato-clathratis ; labro sim- 

 plici ; umbilico peramplo. Obs. In sculpture this perhaps is the 

 most beautiful species of the genus, although some others may 

 equal it in elegance of form. It is dedicated to a voyage-natu- 

 ralist who was well qualified to appreciate the beautiful in shells. 



4. cingulifera (pi. 255, f. 13, 14), A. Ad. — Testa orbicu- 

 laris, nitida ; spirsi depressa ; anfractibus rotundatis ; carinulis 

 transversis, acutis, sequidistantibus ; interstitiis (sub lente) tenuis- 

 sime longitudinaliter striatis ; apertura subcirculari, supra sub- 

 angulata; umbilico mediocri. Obs. This is a solid species with 

 wide-apart conspicuous concentric ridges, the intervals being, in 

 very fresh specimens, finely concentrically striated. In good con- 

 dition it is almost semiopaque and has a glossy appearance. 



5. micans (pi. 255, f. 7, 8, 27). — Testa turbinata, alba, nitida; 

 anfractibus convexis, longitudinaliter oblique costellatis, transver- 

 sim carinulatis; carinulis nodulosis; umbilico mediocri; apertura 

 circulari; peristomate continuo, subincrassato. Obs. This is the 

 Cgcloslrema pulchettum of Dr. Dunker, who obtained it from 

 Japan. The author has likewise found the species abundantly in 

 the inland sea of that country, but had previously described the 

 species from the Philippine Islands. 



6. angulata (pi. 255, f. 1, 2), A. Ad. — Testa orbicularis, 

 discoidea; spira depressa ; anfractibus transversim costellatis ; cos- 

 tellis regularibus, scquidistantibus ; interstitiis tcnuissime striatis ; 

 anfractu ultimo biangulato, supra costellato, in medio piano, infra 

 costellato ; apertura subangulata ; peritremate interrupto ; um- 

 bilico permagno. Obs. This is a very fine and elegant species, 

 brought by Mr. Cuming from the prolific islands of the Philip- 

 pine Archipelago. 



7. sulcata (pi. 255, f. 11, 12), A. Ad. — Testa orbicularis, 

 discoidea; spira planiuscula; anfractibus convexis; costellis 

 transversis, confertis, regularibus, interstitiis ; profunde sulcosis ; 

 suturis profundis, canaliculatis ; umbilico patulo ; perompbalo 

 lsevi. Obs. This species is common in the China Sea; Mr. 

 Cuming has found it in the Philippines, and the author has met 

 with it rather abundantly in the seas of Japan. 



