C E R I T H 1 U M 



Plate II. 



Species 7. (Fig. a, b, Mus. Cuuiing.) 



Cekithium nebulosum. Cerith. testa ventricosa, albidd, 

 obscure //riseo-iiebii/osn, liiieis interriiptis el maculis 

 magnis niyrescentibus variegatd, spiraliter slriatd, an- 

 fractibus siiperue ani/idul'is, nd aiignlitm labercidis aii- 

 gulatis coronatis, ad marghieiii crenulatis, ultimo au- 

 fractu tuberculorum seriebus tribua ornato, aperturd 

 magna, postice coarctatd, columelld postice callo maguo 

 instriictd, autice lamellatd et refiexd, caiiali b7-evi, re- 

 c/ifoo, labro minute, denliculuto et pimctatv. 



The clouded Ceeithitjm. Shell veutricose, whitish, 

 obscurely clouded with grey, variegated with inter- 

 rupted lines and large blackish spots, spirally 

 striated, whorls angulated above, crowned with ;iu- 

 giilated tubercles at the angle, crenulated at the edge, 

 the last ornamented with three row's of tubercles, 

 aperture large, contracted at the back, columella with 

 a large callus at the back, laniellated and reflected in 

 front, canal short, recurved, outer lip denticulateil 

 and spotted at the edge. 



SowEiiBY, Thes. Conch. Cerithium sp. 71. 

 Cerithium macithsum, Kiener. 



JIab. Galapagos Island ; Cuming. 



This species resembles C. adustiim in general appear- 

 ance, but the whorls are crenulated at the edge and have a 

 row of produced angular tubercles on the angle ; the last 

 whorl also has several rows of ])roniinent tubercles. The 

 name maculatns, used by Keiner to designate this species, 

 had been previously employed for another. 



SovvEKBY, Thes. Conch. Cerithium sp. 72. 

 JIab. Red Sea. 



This is not difficult to distinguish from any other specie.'. 



Species 8. 



(Cerithium C/Kruleum. Cerith. testa solidd, ventricosa, 

 caruled, nigra macidatd, titbercidis rotundis, ad sutu- 

 ram parvis, ad angulum anfractumn magnis, infra me- 

 diocribus munitd, anfractibus paucis, ultimo magno, 

 aperturd magna, callo posiico Jiaud magno, antice 

 brevi, labro incrassato. 



The sky-blue Cerithium. Shell solid, veutricose, ra- 

 ther blue, spotted with black, having rounded tuber- 

 cles, large at the angle of the whorls, small at the 

 margin, and of middle size below, whorls few, angu- 

 lar, posterior callus not large, columella short at the 

 base, outer lip expanded, thickened. 



Species 9. 



Ceeithiuji vulgatum. Cerith. Itstd oblongd, ventricosd, 

 griseo fulvo et fiisco variegatd, spiraliter striatd, an- 

 fractibus numerosis, medio angnlatis, supra angulum 

 subexcavatis, tnberculis ad suturam mediocris rotundis, 

 ad angulum n,agnis angulatis munitis, varicibus raris, 

 albis, aperturd breviusculd, ovatd, subexpansd, can/di 

 brevissimo, callo mediocri. 



The co.mjion Cerithium. Shell oblong, veutricose, 

 variegated with grey, light- and dark-brown, spirally 

 striated, whorls numerous, angular in the centre, 

 slightly hollowed above the angle, provided with 

 middle-sized tidjercles at the suture and large angu- 

 lar ones at the angle, varices few, white, aperture ra- 

 ther short, ovate, rather expanded, canal very short, 

 callus on body-whorl middle-sized. 



Bruguiere, Enc. IVIet. n. 13. 

 Strombiis nodosHS, Schrceter. 

 Cerithium thgmetiis, Meusch. 



Hab. Mediterranean Sea. 



Species 10. (ilus. Cuming.) 



Cerithium echinatum. Cerith. testa ventricosd, crassd, 

 albd, lineis elpmiclis rubris aspersd, spiraliter sulcata, 

 anfractibus angulatis, ad angulum tubercuUs acitleatis 

 elevatis magnis armatis, supjra angulum subexcavatis, 

 ultimo magno, seriebus quinque papillarum magnarum 

 obtusarurn armato, aperturd mediocri, postice coarc- 

 lidd, autice in cauiilein brevem recurvum desinente, 

 columelld crassd, ab anfractu ultimo distinctd, callo 

 magno postico inmiitd, labro laqueato. 



The prickly Cerithium. Shell veutricose, thick, white, 

 scattered with red lines and spots, spirally grooved, 

 whorls angular, armed with large elevated pointed 

 tubercles on the angle, rather hollow above the angle, 

 last whorl large, having hve rows of large obtuse 

 papiihe, aperture middle-sized, contracted at the 

 back, ending in a short recurved canal, columella 



October, 1865. 



