]0 Dr. P. P. Carpenter on new Forms of Mollusca 



Monterey, beach to 20 fathoms; Catalina Island, 10-20 fa- 

 thoms. State Coll. uo. 398 <i {Cooper). 



4?3. Amycla tuberosa, 



A. testa A. minori simillima, sed vertice nucleoso tuberoso ; aiifr. iv., 

 tumidis, rapide augeiitilius ; a))ice minimo, margiiies spirae rectos 

 parum superante, interdum subdecliviter sito ; testa adulta intei- 

 dum unicolore, livida seu auraatiuca ; plerumque albida, rufo-i'usco 

 ▼nrie picta, seu maculata, seu nebulosn, seu strijiata strigis radi- 

 antibus seu flcxuosis, seu varie penicillata, saipe fascia tessellata 

 subsuturali ; anfract. norm, v., plaiiatis, suturis distinctis; basi 

 suhangulata; apertura pyriformi, canali satis j)roloiigato, arcuato; 

 labro iiitus acuto, deorsum quasi tumidiore, postice sniuato, iulus 

 circ. octodentato ; labio parum conspicuo, vix rugulilo ; columella 

 torta, axi antice striate ; superficie la;vi, seu iutenlum minuti>.sime 

 sub leute radiatim striolata ; epidermide coruea, tciiui, subdia- 

 phana, spiraliter sub leiite minutissime striolata : operculo Nassre- 

 t'ormi, parvo, margiuibus irregulariter serratis, cicatrice bilobata. 

 Long. -32, long. spir. -IS, lat. "l-l, div. 30"". 



Hab. Sta. Barbara, recent and fossil [Jeivett) ; coast of Cali- 

 fornia north to Monterey ; Catalina Island, 8-10 fathoms 

 {Coopei-). 



As this belongs to a group of closely allied species of Nassoid 

 Columbellse, a minute diagnosis is given. The fossil specimens 

 are larger, and have the remarkable nucleus more perfect, than any 

 of the recent shells yet seen. In appearance it scarcely differs 

 from the small variety of the Mediterranean A. minor, Scac. ; 

 but that (with A. corniculata) has a Chrysodouioid nucleus, the 

 Californiau an Alaboid. 



? Anachis penicillata. 



XA. testa parva, Metuloidea, turrita, albida, rufo-fusco plus minusve 

 penicillata; anlV. nuclcosis ii., tumidis, helicoideis, apice mamil- 

 lato ; norm, vi., tumidis, suturis valde impressis ; costis radiauti- 

 bus circ. xii., angustis, expressis ; lirulis spiralibus extantibus, 

 in spira plerumque vi. supra costas transeuntibus ; ajjcrtura pyrl 

 formi, antice eti'usa ; labro postice sinuato. Long. '2\, loUjj. 

 spir. -13, lat. 08, div. 25°. 



Hab. Sta. Barbara (Jewett) ; S. Diego, Catalina Island, shore 

 to 10 fathoms {hooper). 



Neither of the specimens sent is quite mature. The month 

 is that of an adolescent Anachis, but the sculpture is Metuloid. 



Sipkonalia fuscotincta. 



S. testa minima, turrita, albida, apicem versus fusco tincta ; anfr. 

 nucl. ii., compactis, subplanatis, apice niamillato ; norm, iv., con- 

 vexis, suturis impressis ; costis raiiiantibus rotundatis, tumentibus, 

 basim versus evanidis, interstitiis undulatis, subsequaiitibus ; liridia 



288 



