Mr. F. P. Marrat 07i proposed new Species o/Oliva. 473 



colour. Again, in his description of 0. pulchellaj Reeve (not 

 Duclos, as quoted) tells us that it differs from 0. lanceolata, 

 Reeve, in having the spots invariably removed from the 

 sutures. 



Mr. Ponton says that the purple stain at the base of the 

 columella is a marked character of 0. reticularis, Lam. I will 

 enumerate the species or varieties with and without this stain. 



1. Having no stain: — 0. reticularis, Lam. (Reeve, pi. 10. 

 fig. 16 a), stated in Reeve's description to be the type. There 

 are forty specimens of this variety before me, and I have ex- 

 amined at least two hundred more without finding in any one 

 of them the slightest trace of the stain mentioned by Reeve 

 and quoted by Mr. Ponton ; neither does it occur in any speci- 

 mens of the smaller West-Li lian variety examined by me. 

 O. timorea, Duclos, 0. obesiiia, Lam., 0. Melchersi, Mke. 

 {0. araneosa, Lam.) (four pale varieties), 0. pindarina,DM~ 

 clos (six pale varieties), 0. usfidata, Lam., 0. hepatica, Lam., 

 O.julieta, Duclos, 0. polpasta, Duclos, 0. peruviana, Lam, 

 (normal form), and O.fiisiforniis, Lam. 



2, More or less stained : — 0. tncrassata, Soland. ( 0. angu- 

 lata, Lam.), five out of fourteen specimens ; 0. subangulata,Vh.\- 

 lippi, O.Melchersi, Mke. ( 0. araneosa, Lam.), all the dark varie- 

 ties ; 0. pindarina, Duclos, all the dark varieties ; Reeve's 

 shell, figured at pi. 10. fig. 16 h, of which there are two very 

 much finer specimens than the one figured lying on my table 

 (they were sent by a resident in Jamaica, and gathered by himself 

 on the shore of that island ; but I must remark that the resem- 

 blance, spoken of by Reeve, to the variety 0. araneosa, Lam., 

 does not appear to me so striking). The shell figured at pi. 11. 

 fig. 16 A has the columellar lip of a miiform dark-brown colour. 

 0. splendidula, Sow. ; 0. Cumingii, Reeve. I have not observed 

 an approach to the colour of this shell in any specimen in the 

 reticularis group; whereas shells of a similar colour and character 

 with the stain at the base are of frequent occurrence among the 

 abnormal forms of 0. peruviana,\j2im. (of which the 0. ligneola, 

 Reeve is one), the 0. intertincta, Carpenter, 0. infiata, Lam., 

 0. nehulosa, Lam., and 0. undatella, Lam. In fact 0. reti- 

 cularis, as at present constituted, is (like the term Fucus in 

 geology, anything in the form of a plant) anything in the 

 form of an Olive. Having the whole of the species and varie- 

 ties described both by Reeve and Duclos, and at least twelve 

 others in that group of which I have seen either a figure or 

 description, neither my 0. violacea nor jamaicensis will agree 

 with any of them. 



Now, with regard to 0. truncata, Marrat ; since describing 

 this species, several other specimens have been examined by 

 Ann. & Mag. N. Hist. Ser. 4. Vol. i. 33 



