10 Dr. P. P. Carpenter on new Furms of Mullusca 



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

 thoms, State Coll. no. 398 c {Cooper). 



453. Amycla tnherosa, 



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

 tumidis, rapide augentibus ; aidce minmio, margiues spirse rectos 

 parum su])erante, interdum subdecliviter sito ; testa adulta inter- 

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

 vane pieta, seu maculata, seu nebulos^i, seu strigata strigis radi- 

 antibus seu flexuosis, seu varie ])erncillata, sa;pe fascia tessellata 

 subsuturali ; aufract. norm, v., planatis, suturis distinctis ; basi 

 subangulata ; apertura pyriformi, caiiali satis prolongato, arcuato ; 

 labro iiitus acuto, deorsum quasi tumidiore, postice sinuato, intus 

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

 torta, axi antice striato ; superficie Isevi, seu interdum minutissime 

 sub lente radiatim striolata ; epidermide cornea, tenui, subdia- 

 pbana, spiraliter sub lente minutissime striolata : operculo T^assse- 

 ibrmi, parvo, margiuibus irregulariter serratis, cicatrice bilobata. 

 Long. -32, long. spir. -18, lat. '14, div. 30°. 



Hub. Sta. Barbara, recent and fossil (Jeiveti) ; coast of Cali- 

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

 {Cooper). 



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. corniculaia) has a Chrysodomoid nucleus, the 

 Californian an Alaboid. 



? A7iachis penicillata. 



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

 penicillata ; anfr. nucleosis ii., tumidis, helicoideis, apice marail- 

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

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

 in spira plerumque vi. supra costas transeuntibus ; apertura pyri- 

 formi, antice efiusa ; labro postice sinuato. Long. "21, long, 

 spir. -13, lat. -08, div. 25°. 



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

 to 10 fathoms (Cooper). 



Neither of the specimens sent is quite mature. The mouth 

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



Siphonalia fuscotincta. 



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

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

 vexis, suturis impressis ; costis radiantibus rotundatis, tumentibus, 

 basim versus evanidis, interstitiis undulatis, subaequantibus ; lirulis 



288 



