184 SVEN' LOVEN, ON TilK ECFIINOl DE A DESCRII5E1) BV LINN.-EUS. 



Explication of the plates. 



Plate 1. 



The fil-st schedule of the MS, iu tlie haiulwriling of Linn.^':us, 

 of the Museum Ludovicre Ulricfe; fac-siinile. Pag. 10. 



Plate 2. 



Fig. 1 — 3, the onginal speciinen of the Echiniis sphieroides L. ; 

 natural size. The fig. 2 presents in the middle the inlerradiiiin 2. 

 Pag. 68. 



Plate 3. 



Fig. 1- — 3, the largest of the five original specimens of the 

 Echinus Lixnla L. Tlie fig. 3 presents in tlie middle tlie interra- 

 dium 4. Pag. 80, 97. 



Fig. 4, 5, other original speeiniens. 



Fig. G, the original speeinien of Klein's Cidaris assulata pn- 

 stulosa jj, in the Mnseum of tlie University at Erlangen. Pag. So. 



Fig. 7, 8, and 9, specimens from the P)iglit of Guinea. Pag. 103. 

 All the figures natural size. 



Plate 4. 



Fig. 1 — 3, the original speeimen of the Echinus Diadcma L., 

 natural size. The fig. 2 presents in the middle the ainbulacrum I. 

 Pag. 125. 



Plate 5. 



Fig. 1 — 2, the original speeimen of the Echinus Cidaris L., 

 natural size. The fig. 2 presents in the middle the interradium 4. 

 Pag. 138. 



Plate G. 



Fig. 1, the original specimon of the Echinus Spatagus L.; na- 

 tural size. Pag. l(>0. 



Fig. 2, the original speeimen of the Kchinns rosaceus L.; na- 

 tural size. Pag. 171. 



Plale 7. 



Fig. 1, a part of the test of the Ecliinus Lixula L., sliowing 

 the epistroma. Pag. 80. 



Fig. 2. the calyciiK" system and surronnding parts in a s]tecimen 

 of the same frcjiii Lihcria. Pag. 103. 



