Psephis salmonea, Cpr. n. s. State Collection, No. 1068.
Ps. t. Parvâ, subinflatâ, subæquilaterali, subtrigonâ; colore salmoneo; extus nitidâ minutissime et creberrime concentrice striatâ; margine ventrali excurvato; dorsalibus antico et postico subrectis: intus, dent. card. iii.-iii., quorum utrãque valvâ anticus porrectus, quasi lateralis, centrales parvi; v. dextr. dente postico in marginem sulcatum decurrente; cicatr. adduct. satis conspicuis, subrotundatis; lineâ pallii satis internâ, vix obsolete sinuatâ.
Long. 0·12, lat. 0·11, alt. 0·06.
Hab. Catalina Island, 30-40 fm., rare.; Cooper.
Placed under Psephis by analogy; whether the animal be ovoviviparous has not yet been ascertained.
Genus Astarte, J. Sby.
Astarte fluctuata, Cpr. n. s. State Collection, No. 1060.
A. t. valde planatâ, ovoideâ, costis concentricis valde distantibus, angustis, undulatis, ornatâ; marg. dors. post. subrecto, ant. concavo, lunulâ longâ, parum impressâ; ventr. satis rotundato; ant. valde rotundato; post. subquadrato; intus, v. dextr., laminâ cardinali planatâ; dent. card. i. inter fossas ant. parvam, post. triangularem, extante; dent. lat. ant. acutiore, satis elongato, post. nullo; cicatr. adduct. ovalibus, posticâ callo definitâ; margine haud crenato; sulco ligamenti externi elongato.
Long. 0·33, lat. 0·26, 0·10.
Hab. Catalina Island, 30-40 fm. Cooper.