OF MOLLUSKS FROM MAZATLAN. 27^ 



223. The length should be 1-1. 



319. For " labio nullo " read " tenuissimo " 



330 The nuclear shell has two whorls, AmpuIZarm-sh&ped.. 

 . 367. Add to diagnosis, " operculo concavo, linea elevata suturam definiente" 



368. Add to diagnosis, "operculo vix concavo, suturis minus definitis" 



373. Add to diagnosis, " operculo concavo, sut.uris distinctis, peripherian 

 versus linea elevata instructis." The species was found living among the smal 

 Olivetta. 



376. Add to diagnosis, " operculo concavo, suturis wx defimtis" Living 

 among Olivellts. 



501 Instead of the specimen from which the description in the text wa 

 written, tablet 1966 contains a much tiner shell, since found, which allows of th 

 following additions to the diagnosis : " vert nucl. parvo, satis extante, deck 

 viter sito ; anfr. norm, v ; interstitiis carinarum transversim rugulosis ; labr 

 toMiore. Long. 087, long, spir 057, lat. -038." 



510. A very beautiful shell, found in the refuse of Professor Adams's Panam 

 collection, is probably of this species, though the sutural cancellations are close 

 It has one more whorl vertex Chemmtzoid, of three Helicoid whorls, scarcel, 

 projecting ; apex hidden 



650. From perfect Cape St. Lucas specimens, add the following to diagnosis 

 " epidermide fimbriata, lirulas spzrales eleganter decussante." 



Page 312. Add to the diagnoses of opercula of Vermetidce: 



" (h.) Operculum corneum, intus convexum, nitidum, umbone magno extantt 

 aztus concavum, paucisptrale, lamina extante suturas definiente. Diam. -045. 

 Tablet 2537 contains the only specimen found, resembling Siphonium, froc 

 the Spondylus-vra,shmgs. 



Tablet 447 is Liocardium apicinum, which should stand as species 709. 



Page 314, note * (et seq.), for " Inflatulum" read " Mioceraa," 



Page 359, line 18, for "regular" read "irregular." 



261 



