ON MOLLT78CA 09 THE WEST COAST OF NORTH AMERICA. 235 



Trochus ater, Less. [?=] gallinaVp. Cal. 

 Trochiscus Norrisii, Sow. Upper Cal. 

 Uvanilla olivacea. Wood. Lower Cal. 

 Neritina picta, Sow. Lower Cal. 

 Crucibulum spinosum. Sow. San Pedro, 



Lower Cal. 

 —-^tenue,BToi.=spinosum,v&r, Lower 



Cal. 



■ rude, Brod. Lower Cal. 



dentatum, Mke. Lower Cal. 



imhricatum \] cujus\. ? — 



CalyptrcBU (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. ? — 

 Cypraa spadicea. Gray. Monterey. 

 zonata. Gray = Sowerbyi, Rve. 



Lower Cal. 



arabicuJa. 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. 1 — 

 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. 



~ brevidentatum. Wood. ? — 



cymatum. Sow. ? — 



crassilabrum. Sow. Upper Cal. [?] 



unicarinatum. ? — 



globulus, [Iciijus]. ? — 



Vitulariasalebrosa,Kmg=vitulina,Gia.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 vi'as 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. 1847, pp. 177-191. Here, for the 



first time in the history of West N. American MoUusca, 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 



Iscience ; 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 



[yon Mazatlan, mit einigen Kritischen Bemerkungen," and contains notes on 



fhe following species : — 



1. Siphonaria lecanium, Phil. 



2. Litorina aspera, Phil. 



3. Turritella imbricata, [Mke. 



Lam.=T. tigrina, Kien. 



quasi] 



4. Vermetus glomeratus, [Mke. quasi] 



(Rouss.),Linn.?=jB?»OMia coM?orta. 



5. Natica iostoma, Mke. " Resembles 



N. canrena." 'i=Njnaroccana,vat. 



