CHRYSAME. 149 



suture crenulations white-tipped, and white spots, sometimes 

 confluent into an irregular band, below the sutures ; revolving 

 incised lines strongly punctate, sometimes obsolete on the middle 

 of the body whorl. Length, 1*25-1*75 inches. 



Red Sea ; Philippines to Sandwich Isles; Mauritius. 

 M. aurora, Dohrn (fig. 21.7) is, I think, a synonym, although 

 Mr. Garrett considers it distinct ; it is a beautifully bright- 

 colored form from Polynesia. M. tiarella, A. Ad. (fig. 275), is 

 only a small form of M. coronata, and M. assimilis, Pease (fig. 

 281), is a young shell. Pease mentions the want of crenations 

 at the sutures as the principal distinction from M. coronata, but 

 the specimen sent to me by Mr. Pease shows these sutural 

 nodes, and they are minutely white-tipped ; although small, they 

 ought not to have escaped his scrutiny. M. marginata, Sowb. 

 (fig. 282), described from a single specimen, without locality, is 

 probably also a young coronata. M. floridula, Sowb. (fig. 283), 

 from Mauritius, has the engraved striae deeper, the punctations 

 wider than in the type form ; the consequence is that the inter- 

 mediate spaces appear more like revolving, broad ribs. I cannot 

 agree with Sowerby that these differences are specific. 



M. DIGITALIS, (Chemn.) Dillw. PI. 44, fig. 278. 



Yellowish, clouded with yellowish brown, sutural nodes white- 

 tipped, surface irregularly spotted with white, larger spots, some- 

 times forming a more or less interrupted central band ; incised 

 striae deeply punctate. Length, 1*5-2*25 inches. 



Philippines, Polynesia. 



M, LUGUBRIS, Swainson. PI. 44, figs. 284-287. 



Reddish chestnut to chocolate color, white beneath the sutures, 

 and sometimes at base ; encircled by impressed, punctured striae 

 crossed by close, rough growth-lines ; sutures crenulated. 



Length, -8-1*4 inches. Polynesia. 



Mr. Garrett thinks M. lacunosa, Reeve (PL 33, fig, 13), identical, 

 but I can scarcely agree to this, as it appears to be totally 

 dissimilar in fact to belong to a different group (p. 113). M. 

 albofasciata, Sowb. (fig. 286) said, perhaps erroneously, to come 

 from So. Africa, appears to be a narrow, somewhat smoother 

 form of lugubris. M. coriacea, Reeve (fig. 287) is probably a 

 young lugubris. 



