ON MOLLUSCA Of THE WEST COAST OF NORTH AMERICA, 235 



Trochus ater, Less. [?=] gallina Up. Cal. 

 Trochiscus Norrisii, Sow. Upper Cal. 

 Uvanilla olivacea, Wood. Lower Cal. 

 Neritina picta, Sow. Lower CaL 

 Crucibulum spinosum, Sow. San Pedro, 



Lower Cal. 



tenue, Bro&.=spinosum,va,Y. Lower 



Cal. 



rude, Brod. Lower Cal. 



dentatum, Mke. Lower Cal. 



— — imbricatum [? cujus] . ? — 

 Calyptrcea (like equestris), probably ce- 



pacea. Lower Cal. 

 Galerus conicus, Brod. ? — 



mammillaris, Brod. ? — 



Crepidula onyx, Sow. Lower Cal. 

 excavata, Brod. Lower Cal. 



— aculeata (teste Gld.). Lower Cal. 



(like) dilatata. Lower Cal. 



? squama. Lower Cal. 



Litorina planaxis, Nutt. Upper Cal. 

 Planaxis planicostata. ? — 



Cyprcea spadicea, Gray. Monterey. 



zonata, Gray = Sower by i, Rve. 



Lower Cal. 



arabicula. Lower Cal. 



Cancellaria obesa, Sow., ? =urceolata, 



Hds. La Paz. 



solida, Sow. La Paz. 



cassidiformis, Sow. La Paz. 



Candida, Sow. Gulf Cal. 



goniostoma, Sow. Gulf Cal. 



Strombus gracilior, Sow. Lower Cal. 



granulatus, Sow. Lower Cal. 



Terebra variegata, Gray. (Guaymas,Mus. 



Cum.) Lower Cal. 

 Pleurotoma maculosa, Sow. Lower Cal. 



Conus trochulus, Rve. Upper Cal. 

 interruptus, Brod. & Sow. Lower 



California. 

 Solarium quadriceps, Hds. Lower Cal. 

 Natica Chemnitzii, Phil. Lower Cal. 



bifasciata. Lower Cal. 



Mitra lens, Wood. Lower Cal. 



inermis. ? — 



Cassis coarctata, Sow. Lower Cal. 

 Leucozonia cingulata, Sow. Lower Cal. 

 Ranella ventricosa. ? — 

 Triton Chemnitzii, Gld. (lapsu) = sipho- 



natus, Rve. Lower Cal. 

 Tritonidea pagodus, Rve. Lower Cal. 

 Nassa luteostoma, Brod. Lower Cal. 

 Oliva splendidula, Sow. Lower Cal. 



testacea, Lam. Lower Cal. 



biplicata, Sow. Lower Cal. 



volutella, Lam. Lower Cal. 



? tigrina. Lower Cal. 



Columbella fuscata, Sow. Lower Cal, 



coniformis. Lower Cal. 



Purpura columellaris, Lam. Lower Cal. 



biserialis, Blainv. Lower Cal. 



emarginata, Desh. Lower Cal. 



kiosquiformis, Duel. ? — 



muricata, Gray. Lower Cal. 



Monoceros punctatum, Sow. Upper Cal. 



br evident atum, Wood. ? — 



cymatum, Sow. ? — 



crassilabrum, Sow. Upper Cal. [?] 



unicarinatum. ? — 



globulus, [? cujus]. ? — 



Vitulariasalebrosa,K'mg=vitulina,Gr&y. 



Lower Cal. 

 Murex bicolor, Val. Lower Cal. 

 foliatus=pinniger, Brod. ? — 



48. The first important contribution to the local fauna of the Gulf of 

 California was made by Dr. Menke ; who, having received from his friend 

 M. Heinrich Melchers, of Bremen, a number of shells which he had himself 

 collected at Mazatlan, proceeded to catalogue and describe them in the 

 "Zeitschrift fur Malacozoologie," Dec. 184-7, pp. 177-191. Here, for the 

 first time in the history of West N. American Mollusca, we have an attempt 

 to present a complete geographical list, of known as well as supposed new 

 species, collected in a particular district. For the example thus set, and for 

 the record of the labours of M. Melchers, Dr. Menke deserves well of 

 science ; but it does not appear that his identification of species is always 

 sound ; nor is it in every case easy to make out his descriptions of new 

 forms. The paper is entitled " Verzeichniss einer Sendung von Conchylien 

 von Mazatlan, mit einigen Kritischen Bemerkungen," and contains notes on 

 the following species : — 



No. 



1. Siphonaria lecanium, Phil. 



2. Litorina aspera, Phil. 



3. Turritella imbricata, [Mke. quasi] 



Lam.=T. tigrina, Kien. 



No. 



4. Vermetus glomeratus, [Mke. quasi] 



(Rouss.), Linn. ? =_B ivonia contort a. 



5. Natica iostoma, Mke. " Resembles 



N.canrena." ?=A r . maroccana, var. 



