162 
2314 Perna chemnitzianum Orb. 
2315 Lima pacifica Orb. 
2313 Arca grandis B. & S. 
2316 Phacoides lamprus Dall. 
2318 Cardium magnificum Desh. 
2319 Venericardia crassicostata Sby. 
2317 Cardium consors Sby. 
2320 Venericardia cuvieri Brod. 
2321 Anomalocardia subimbricata Sby. 
2322 Chione undatella Sby. 
2323 Paradione squalida Sby. 
2324 Tellina cumingi Hanley. 
2325 Tellinoides viridotincta Cpr. 
2326 Semele proxima C. B. Ad. 
2327 Thracia plicata Desh, 
2328 Tagelus politus Cpr. 
From the same locality, identified by Dr. Dall, I have also 
numbers 2329-2332. 
2329 Planorbis petenensis Morel. 
2330 Columbella fuscata Sby. 
2331 Purpura floridana Conr. 
2332 Codakia distinguenda Tryon. 
2333 Orehelix haydeni betheli 
Pilsbry & Cockerell, Nautilus 26:144. Glenwood Springs, Col- 
orado. 
2334 Galba ferruginea 
Frank C. Baker, Nautilus 26:24, records this from Oswego, 
Oregon. Also recorded from Cal. and Washington. 
2335 Lowe, H. N.: 
Shell collecting on the West Coast of Baja California. Nau- 
Tilting wi Zo. 
Numbers 2336-2358 are mentioned, among others, 
2336 Mitromorpha gracilior Hemphill. 
2337 Mitra lowei Dall. 
2338 Marginella politula Cooper. 
2339 Cerithiopsis alcina Bartsch. 
2341 Cerithiopsis (Cerithiopsis) carpenteri 
Type locality:—Terminal Island, Cal. Named in honor of 
Philip P. Carpenter. San Diego, Cal. 
“Shell broadly elongate-conic, dark chocolate brown. Nu- 
clear whorls 3, smooth, well rounded, separated by a slender su- 
ture, forming an elongate-conic spire. Post-nuclear whorls well 
rounded, marked by 3 strong, broad, spiral bands which are as 
wide as the spaces that separate them. Of these, the ist and 
widest is at the summit, the next is median, while the 3d is a lit- 
tle posterior to the suture. In addition to the spiral keels, the 
whorls are marked by slender, rounded, axial ribs which are 
about half as wide as the spiral cords. Of these ribs, 20 occur 
upon the ist and 2d, 22 upon the 3d to 5th, 24 upon the 6th and 
7th, 28 upon the 8th, and 30 upon the penultimate turn. The 
junctions of the axial ribs and spiral cords form strong, elongated 
tubercles, having their long axes parallel with the axial sculpture. 
The tubercles at the summit are well rounded anteriorly and pos- 
