^lELViLL : GENEkA l-'SELTUOLlVA AND MACRON. 327 



2. Macron aethiops.' 



Buccinuin ^'Ethiops Reeve, Conch. Icon., vol. 3, 1847, P^- ^^3> ^- '°S. 

 "Bitce testa ovota, spira breviitscula, anfractibus superuc late plano- 



dcpressis, regularlter eostatis, costls graiidibus convexis interstitiis 



latiusciilis^ exciwatii : iolitinella et apertura fauce subcorrugatis aiit 



Uratis\ alba cpidennide cornea anthracina induta. 



"The Blackamoor Buccinum." 



Hab., ? 



'A remarkable species, approximating in form and general character 

 to the Purpura trochlea and its congeners ' (L. S. Reeve). 



The specimen in my collection is 2"5 inches in length, thick, black, 

 five-whorled, canaliculate at the sutures, last whorl transversly eight- 

 furrowed, the furrows uniform, clearly cut and defined, ribs smooth, 

 mouth oblong-oval, interior white, outer lip with tooth-hke projection 

 near the base, the spiral furrow or groove at the point of junction 

 being slightly deeper than the other sulci; columella white, slightly 

 bulbous at the upper part. There are four examples in the Man- 

 chester Museum and several in our National Collection. 



Mr. G. W. Tryon'- is entirely erroneous in his conclusions as to this 

 large and handsome species being identical with Purpura cingulata L. 

 He had evidently never seen the shell; this indeed not being sur- 

 prising, as it is very uncommon, but it is always unsafe to draw definite 

 premises from a figure, especially, as in this instance, one taken from 

 a poor and imperfect specimen, not exhibiting any of the salient 

 labial characters, though it be the type. A comparison of the 

 Purpura with the Afacro/i shows the spiral ribs to be of c^uite a 

 different character, and the mouth and lip of Af. cEthiops resemble 

 no Purpicta at all, but are almost identical with those of Macron 

 kellettii A. Ad. It is W'est American in distribution. 



3. Macron wrightii. 



Alacron wrightii H. Adams, Proc. Zool. Soc, 1865, p. 853. 



'J/, testa ovato-trigona, solidissima, subunibilicata, alba ; spira bre^'i, 

 anfr. 4, convexiusctilis, superne tabulatis, anfractu ultimo niagno, 

 transversini sulcata, sulcls postice evauidis, antice tribus Dalde dis- 

 tinct is , sutura canaliculata, apertura avail, :: totius longitudinis 

 testce ; columella arcuata, callo postlce copioso, canali brevi, recurvo ; 

 labro posticc injiexo, antice sinuatodentato. Long. 75, lat. 52 /;////. 

 Hab., Coast of Patagonia (Coll. mea). 

 'The specimen from which the above description is taken was 



obtained, I am informed by Mr. Wright, from the coast of Patagonia. 



It is very much beach-woril, but when in a fresh state was, I have no 



1 Macron checsviani Hulton, a siuall species from New Zealand, of which more details arc 

 wanted, seems nearest to M. letliiops, which it resembles in its deeply channelled spiral ridges. 

 There is a specimen in the National Collection. 



2 "Man. Conch.," vol. 3, p. 214. 



