428 



12. Descriptions of New Shells in the Collection of 

 H. Cuming. By G. B. Sowerby, F.L.S. 



(Mollusca, PI. XLIX.) 



1 . Spondylus victoria (fig. 8). S. testa subregulari, depressa, 

 ovali, alba, ad umbones roseo variegata, costis quatuor magnis, 

 paululum elevatis, intermediis alternatis angustioribus ; spinis 

 majoribns elongatis, arcuatis, ad terminos palmatis, depressis, 

 ad latera undulatim fimbriatis ; spinis minoribus aculeatis, ar- 

 cuatis, spinis valvce inferioris elongatis, arcuatis, concavis. 

 Hab. Gulf of California. 



This beautiful Spondylus resembles S. imperialis in some respects, 

 but the large spines are depressed and fringed at the sides almost 

 like those of S. cumingii. 



2. MuREx OCTOGONUS (fig. 7). M. testa turbinata, subventri- 

 cosa, spiraliter costata, pallide cinerea, ad costas medio fusco 

 maculata ; apertura ovali, cauda recta, laminata ; costis octo 

 crassis, nodulosis, imbricatis, superne aculeatim recurvis, medio 



frondis extantibus, sulcatis ornatis, ad caudam continuiter 

 frondosis ; spira obtusa, sutura subexcavata. 

 Hab. New Caledonia. 



In M. humilis, which this species most nearly resembles, there is 

 a space without fronds on the ribs between the swollen part of the 

 body-whorl and the caudal projection, while the ribs of this species 

 are continuously frondose. 



3. MuREX EXPANSUS (fig. 5). M. testa fusiformi, carneola, tri- 

 costata, spiraliter striata, inter costas unituberculata ; costis 



fimbria lata, elevata, superne angulata, infra ad caudam ter- 

 minali expansis ; cauda brevi ;; spira elevata, acuta. 

 Hab. China. 



In Mr. Reeve's M. eurypteron the expanded fringe on the ribs 

 terminates at the commencement of the caudal process, instead of 

 being continued to the end, as in this species. 



, 4. MuREX NUBiLUS (fig. 4). M. testa fusiformi, fusca, scabra, 

 punctata, spiraliter striata, obscure trifasciata, longitudina- 

 liter trieostata, inter costas unituberculata; costis crassiusculis, 

 scabrosis, superne spina fimb7'iata recta, medio fimbria 'paulu- 

 lum extanti, ad caudam spinis palmiferis tribus iiarvis armatis; 

 spira elongata, acuta ; cauda recta, mediocri. 



Hab. ? 



A dusky, ordinary-looking shell ; and yet there is no other species 

 which exactly corresponds with it. 



5. MuREX T^NIATUS (fig. 3). M. testa fusifomii, fusco bifas- 

 ciata, spiraliter costata, costis longitudinalibus octo crassis, 

 imbricatis, frondosis ; spinis breinbus, acufis, recurvis armatis ; 

 apertura parva, dentata ; cauda acuta, obliqua, ang^ista, ex- 

 tanti ; Spira acuta, anfractibus quatuor subangulatis. 



Hab. Gulf of California. 



