165 



olivaceo fasciatum, sqiiamis rainutissimis vestitura. Long. 13, 

 lat. 9 millim. Hab. China Sea, lat. 24° N. W. S. 



This deeply sculptured little species resembles generally C. 

 Siculus. 



C. (Chtetopleura) plumosus. T. fusco-cinerea, ovata, valvis 

 concavis vix umbonatis ; valva antica liris radiautibus plumosis 

 ornata; v. postica parva, umbone marginali et costa submarginali 

 utrinque notata ; area centrali magna striis divaricantibus et striis 

 lateralibus plumose coadunatis ornata ; areis lateral, parvis, costa 

 marginali finitis, striis denticulatis, interspatiis clathratis. Lig- 

 amentum latum coriaceum, tubulis (setigeris ?) instructum. Long. 

 1.5, lat. .75 poll. Hab. 



Allied to O. ccelatus Rv., which is said to be highly ornamented 

 with green and pink. G. Collei and C. muscosus G. belong to the 

 same group. 



C. (Acanthochcetes) achates. T. angusta, eUiptica, deluta, 

 fuliginosa, striga flava utrinque ornata, valvis scutitbrmibus ros- 

 tratis et carinatis, apicibus ebeninis glabris, alibi squamatim gran- 

 ulata ; valva antica semiovali ; v. postica parva, trigona, umbone 

 subterminali ; intus glauca. Ligamentum latum spinis curtis in- 

 equalibus et fasciculis spicularum munitum. Long. 30, lat. 20 

 millim. Hab. Kikaia and Hakodadi Bay. W. S. 



C. (Moipalia) Stimpsoxi. T. tenuis, rotundato-ovata, de- 

 pressa, fiistigiata, fusca, rufo, rosaceo viridi et flavo marmorata vel 

 lineata, concentrice striata ; valvis angustis planatis ; areis linea 

 elevata finitis ; valva antica parvula, crescentica ; v. postica mini- 

 ma, emarginata. Ligamentum coriaceum antice valde dilatatum, 

 pilis fimbriatum. Long. 1.5 poll., lat. 1 poll. Hab. Hakodadi 

 Bay. W. S. 



Related to G. BlainviUei, but smaller, has no perceptible radi- 

 ating lines on the anterior valve, and is not so vividly colored. 



Dentalium aciculum. T. modica, tenuis, levis, nitida, lactea, 

 admodum arcuata, prope apicem longitudinaliter sulcata, alibi un- 

 dulis annulatis interdum obliquis ornata. Apertura circularis. 

 Long. 30, diam. 3 millim. Hab. Coast of China, 23° 50' N, in 

 sand 25 fathoms. W. S. 



