MEI.Vll.L : NOIES ON THE GENUS HARPA. 27 



^The following tabic explains this wiih regard to the seven species 

 of Harpa recognized by him : the names in brackets are the 

 Lamarck ian by which they have till lately been generally known. 



(/.). H. major Die Grosse Harfe. Gmelin, Buccimim hm-pa, sp. 

 47, Martini, 3 t. 119, f. 1090. Knorr, Verg., i. t. 9, f. 3, 

 and ii. t. 8, f. 2. 



[== ventricosa Lamk.]. 



(//.). H. cythara Die Zitter, (imel, Buccimim harpa, sp. 47. 

 [= ventricosa I^anik., juv.]. 



(///.). H. nobilis Die edle Harfe, Gmel., Biiccinum harpa, sp. 47, 

 Martini, 3 t. 1 19, f. 109 1. 

 [= nobilis Lamk.]. 



(/V'.). H. doris Die rothe Harfe, eod. Martini, 3 t. 119, f. 1094. 

 \_^= rosea (Klein) Lamk.]. 



(v.). H. amouretta Die Harfe mit schmalen und breiten Rippen, 

 eod. Martini, 3 t. 119, f. 1097. 

 [= minor (Rumphius) Lamk.]. 



(vii). H. davidis Die David's Harfe, eod. Martini, 3 t. 119, f. 1092. 



[:= articularis Lamk.].- 



(77/.). H. cancellata Die schmalrippige Harfe, eod. Chemn.,10 



t- 152, f- 1453- 



\j= cancellata Chemn.]. 



The animal of H. ventricosa is figured by Kiener,^ that of H. minor 

 by Quoy and Gaimard,'^ and copied by Adams. '^ Both these species 

 are, excepting in size, exceedingly similar — the tentacles are large, eyes 

 much developed ; foot exceedingly large, and siphon long ; mantle 

 simple, with no frontal appendage. Colour a bright grey, dotted 

 and streaked with yellow. It is reported that, being unable to with- 

 draw entirely into their shells at the approach of danger, instances 

 have been known of parts of the foot being at will detachable. Oper- 

 culum absent. The dentition is figured by TroscheV and given by 

 Tryon'' subsequently. No lateral teeth were observable, but the 

 example operated upon was very young and small. There is apparent 

 near alliance wnth the OlividcE, next which family they should be 

 placed in sequence. 



1 Joao Fried. Bolten, M.D., AIus. Bolteuiaiuini, pp. 149, 150. 179S. 



2 Kiener, Coq. Viv. Harpa, pi. i, f. i. 



3 Quoy and Gaimard, Voy. Astrolabe, JNIoll., pi. xlii., f. 5. 



4 H. and A. Adams, Gen. Rec. Moll., iii., pi. xv., f. i. 



5 Troschel, Gebiss der Schneck., ii. t. 10, f. i. 



6 Tryon, Man. Conch., v., p. 61, pi. ii., f. 17. 



