BIHANG TILL K. SV. VET.-AKAD. HANBL. BAND 13. AFD. IV. N:0 5. 167 



13. ECHINUS LACUNOSUS L. 



EcHiNus ovatiis gibbiis, ambiilacris quinis depressis. 



Praelectiones 1752. 



Fauna Suecica ed. 1746, sp. 1290. 



S. N. ed. 10, 1758, etM. L. U., 1764. 



Rumph. mus. t. 14. /'. 2. 



Gualt. test. t. 109, f. C. 



Breyn. Echin. p. 61, t. 5, f. 1, 2. 



S. N. ed. 12, 1767, add. 



Klein, ecliin. t. 14, B et t. 13 f. C. (ed. gäll.) 



S. N. ed. 10, 1758, et ed. 12, 1767. 

 Hahitat in Iiidico. 



Testa ovata, convexa, 



Snpra adspersa lineis exoletis, reticulatis, gibba. 



Centrum ex ]3unctis duobiis perforatis. 



Radii 4 obtusi, depressi: punclis qiiatuor ordinum, 



horum radii duo anteriores longiores. 

 Fossa concava inter centrum et apieem s. inter 



radios maj öres, profunde lateribus punctata, 



striata. 

 Suhtiis testa, uti a jjagina superiore. 



The MS Lecture adds: »The front area is more deeply im- 

 pressed than the others, like a channel, whence the species is 

 called lacunosus». 



The tjpe of this species appears to have been löst verv 

 early, and in 1790 Swaktz bestowed its printed label on spe- 

 cimcns of a generically different species never described by 



LiNN.EUS. 



The description iu the M. L. U. is siich as to leave no 

 doubt whatever about the modern ofenus to which its oriofinal 



