152 



ECHINOIDEA. II. 



Analytical table of the Echinocardium species. 



1. Anterior ambulacnim deepened 2. 



— — not deepened, flush with tlie test 3. 



2. The furrow continning to the apical system; the pores within the internal 



fasciole in close, donble series. Larger tnbercles are fonnd scattered on the 



( cordatum. 



anterior interambulacra above the ambitus ' 



\ (aitstrale). 



The fnrrow ending abruptly at the anterior end of the internal fasciole ; 



the pores within this fasciole distant and in single series. No larger tnbercles 



above the ambitns mcditerraneiiiu. 



3. No larger primary tnbercles in the interambnlacra above the ambitns; the 

 labninr very short, not reaching beyond the middle of the first adjoining 



ambnlacral piates pciniatifidum. 



Larger primary tnbercles are fonnd at least in the anterior interambnlacra 



above the ambitus; the labrimi generally reaching the second adjoining 

 ambnlacral piates 4. 



4. Very prominent primary tnbercles in all the interambnlacra above the am- 

 bitns flavescens. 



The primary tnbercles above the ambitns little prominent, and occnrring 



only in the anterior interambnlacra 5. 



5. Internal fasciole very small; a distinct saddle-shaped depression in the apical 



region capensc. 



Internal fasciole large; no saddle-shaped depression in the apical region .. m fer medium. 



33. Brissopsis lyrifera (Forbes). 



PI. III. Figs. 2—3, 7, ii~i2, iS, 20—23. P'- IV. Figs. 2—3, 9, 14—17. PI. XVIII. Figs. i, 6, 12, iS, 25—26. PI, XIX. Figs. 3, 6, 10, 



15, iS— 21, 29, 34. 



S}'nonyms : Scltizastcr inccrtus Aradas. 

 Brissjis pulvinahts Phil_ 

 Brissopsis parma Val. 



Principal literature: Forbes: British StarfLshes. 1841. p. 187. — Diiben & Koren: Skandinav. 

 Echinodermer. p. 280. Tab. X. 46. — Philippi: Beschreibnng einiger nenen Echinod. Arch. f. Naturg- 

 1845. P- 347- — L. Agassiz & Desor: Catalogue raisonné. p. 121. PL XVI. 12. — Sars: Norges Echi- 

 nodermer. p. 96. — A. Agassiz: Revision of Echini. p. 95,354. PI. XIX. Figs. i — 8 (non Fig. 9), XXI. 

 Figs. I — 2, XXXVIII. 36 — 38. — Perrier: Recherch. .s. les pédicell. p. 173. PI. VII. 9. — Lo\-én: Etndes 

 s. les Echinoidées. PI. I. i, II. 27-31, III. 32, XII. loo-ioi, XXXVII. 213-18. On Ponrtalesia. PL VIII. 

 66, IX, XIX. 223 — 31. — Wyv. Thomson: Porenpine -Echinoidea. p. 750. — A. Agassiz: Chal- 

 lenger -Echinoidea. p. 189. — Koehler: Recherches s. les Echinoidées des cotes de Provence, p. 135. 

 M eis sner & Collin: Beitr. z. Fanna d. siidost. n. ostl. Nordsee. II. Echinodermen. p. 334. (Figure.) 

 — Lndwig: Echinodermen d. Mittelmeeres. p. 562. — Bell: Catalogue Brit. Echinoderms. p. 172. — 



