Chiton ( Lepidoradsia ) Magdalensis, 



Hinds. 

 Fissurella volcano, Rve. 

 Callopoma tesselJalura, Kien. 

 Lagena nodosum, Chemn. 

 Tritonidea insignis, Rve. 

 Cassidulus patula, Brod. and Sbij. 



Harpa crenata, Swains. 

 Oliva venulata, Lam, 

 Macron ^thiops, Rve.* 

 Fusus Dupetithouarsii, Kiev 

 Phyllonotus bicolor, Vol. 

 Murex plicatus, Sby. 



Shells collected at Loreto,t Lower California, by W M. 

 Gab >, iL February, 1867. 



HY POBERT E. C. STEARNS. 



Cyathodonta undulata, C^'-'xr. 

 Semele bicolor, C. B. Ad. 

 Cbione succincta, Vol. 

 Caliista chionjea, Mice. 

 Tapes (Caneus) grata, Saij. 

 Cyclas dentata, Wood. 

 Pecten subnodosus, Shij. 

 Bulla Adamsi, Mke. 

 Acniaja fascicularis, Mke. 

 Crucibulum spinnsum, S,nj. 

 Neritina picta, Sby. 

 Luponia Sowerbyi, Kien. 

 Trivia Solandri, Gray. 

 Surcula funiculata, Vol. 

 Architectonica granulata. Lam. 

 Pyrazus incisus (dwarf variety). 

 Natica Pritehardi, Fbs. 

 Mamma uber, Val. 



Neverita Recluziana, Rve. 

 Oliva (Ispidula) venulata, Lam. 

 Olivella dama, Mawe. 



" intorta, Cpr. 

 Purpura (Stranionita) biserialis, Blainv. 



" " triangularis, " 



Sistrum carbonarium, Rve. 

 Engina crocostoraa, Rve. 

 Columbella fuscata, Sby. 

 Conella cedo-nulli, Rve. 

 Nassa tegula Rve. 



" versicolor, C. B. Ad. 

 Anachis lyrata, Sby. 



" nigricans, Sby. 



" serrata, Cpr. 

 Strombina maculosa, Shy. 

 Murex plicatus, Sby. 



*Macron (a subgenus of Pseudoliva made by the Adams's) , includes three species all pe- 

 culiar to the west coast of North America, and inhabiting a semi-tropical and littoral station 

 from (and including) San Diogo iu California proper, thence southerly, and both coasts of 

 Lower California ; also at " Cedras " or Ccrros and other islands along the outer coast of the 

 peninsula ; all of the species are covered with a thick, black epidermis ; M. j^thiops, the 

 largest, is traversed spirally by broad, moderately deep grooves from apex to base ; while M. 

 Kellettii, A. Ad., has generally only three below the middle of the body whorl, otherwise 

 being nearly smooth. The most northern and smallest of this group is M. lividus, A. Ad., 

 which seldom attains the length of an inch, the average of many measurements being .77 

 Inch ; this latter species is proportionately less inflated than either of the others, and is not 

 Uncommon at San Diego ; the other species are comparatively rare. 



tLoreto is in latitude twenty-five degrees fifty-nine minutes N.; longitude 113 degrees 

 twenty-one minutes W.; Lower California. 



