330 I.ILLA. 



llulla ampulla var. GMKI.IN, SCHROKTKR et al. llulla maculosa, 

 nga MARTINI, Conch. Cab., i, p. 290, pi. 22, f. 202-204, 1769. 

 />'. ihyx MEUSCHKN, Museum Geversianum, etc., p. 396, 1787. 11. 

 aniinjdalii* DILLW., Descr. Catal. Rec. Shells, i, p. 480. An., Tin-. 

 Conch, ii, p. 575, { 1. 122, f. 63. MKE., Mai. Bl. i, p. 44. Sown., 

 Conch. Icon. f. 7. />. striata ORBIGNY, Moll. Cuba, i, p. IL'L'. />'. 

 mu/tistriata A. AD., index to Bulla, Thes. Conch, ii, p. 607 11. 

 media PHIL., Zeitschr. f. Mai. 1847, p. 121. AD. in Thes., f. 70. 

 SOWB., Conch. Icon., f. lla, 116. ? Bulla (Bulled) marulnata 

 Mi :NKK, Mai. Bl. 1853, p. 139. 



The name proposed by Meuschen is not adopted because it was 

 unaccompanied by a description, and refers to a very indifferent 

 figure. 



The chief characteristics of this species are (1) its solidity, (2) the 

 absence of microscopic strict over the whole shell, (3) the compression 

 of the latter part of the body-whorl, producing a straight outer lip, 

 (4) the thickness of the lip at the vertex, and the very heavy, re- 

 flexed columellar callous with elevated edge. Some of these char- 

 acters, such as the straightened outer lip, occur in II. <><-cideit tnli*- 

 but taking all into consideration, the 11. amygdala seems to be a 

 moderately well-defined type. In some specimens the blackish spots 

 or clouds coalesce to form longitudinal irregular or curved stripes 

 (fig. 62). 



B. RUBIGINOSA Gould. PI. 39, fig. 76. 



Animal with the head flat, compressed, bilobed in front, the loin- 

 semicircular, with a deep fissure between, on each side of which, in 

 a small circular depression and rather remote, are the eyes ; poste- 

 riorly the head is furnished with two thin, prolonged, Bubtriangular 

 lobes. The mantle is very narrow, hardly surpa>sing the edge of the 

 shell. The color of the body is light-ochreous, powdered, as it \ 

 with black. Its motions were sluggish. (J. P. ('.). 



The general contour of the shell is like that of llulla amwjiltln*, 

 with which it has doubtless been confounded. The animal, Imw- 

 ever, is very different. In general, the surface was cither muled or 

 covered with a rusty coating, a- is most commonly the case with all 

 shells found at the mouths of rivers in brackish water- : \vlx-n per- 

 fect, it is of a light shining brown, clouded with black. (Gld.). 



<r the mouth of Rio Janeiro Harbor (Couth.). 



