104 



be white in both species. From the other species, A. grisens and pallidiis, it is 

 at once distinguished by its slender primary spines, which are not swollen in 

 the point. 



The literary references to this species are very unreliable. The Amblypneusles 

 ovum named by Bell in his „Notes on the Echinoderms collected at Port Philip 

 by Mr. J. Br. Wilson" ') are not that species. The glass which has that name on 

 the label contains: 3 specimens of Microcyphus zigzag (among which there is one large 

 one, agreeing exactly with that figured in „Rev. of Ech.". PI. VIII. c. 11 — 12), 1 Micr. 

 elegans, 1 Micr. annulatiis, 1 Holopneustes purpurascens, 3 H. inflatus and 2 H. poro- 

 sissimus, but no Amblypneusles. In Strassburg I have seen a specimen of Holo- 

 pneusles (purpurascens^) determined by Ramsay as A. ovum, which proves that 

 Ramsay has not known the true ^4. ovum, and his remarks") on the variation in 

 colour and form of this species are thus valueless. — Of 10 naked tests lying in one 

 box under the name of A. ovum in the British Museum I found 8 specimens to be 

 Holopneusles, 2 only Amblypneusles. This shows that no reliance can be put on the 

 remarks of Bell^) on this species either. — The statement of the occurrence at 

 Cape of Good Hope of A. ovum (Bell. Op. cit.) is ba.sed on two specimens (naked 

 tests) from Dr. Howerbank, 1860. That the locality is wrong, can scarcely be 

 doubted. 



Amblypneusles pallidus (Lamk.). In the Museum of Copenhagen is preserved 

 a beautiful specimen of an Amblypneusles, which is certainly the same species as 

 that described in „Rev. of Ech." as A. pallidus. It is like A. formosus in the form 

 of the test. The globiferous pedicel lariæ are perhaps a little more slender than 

 those of formosus, but otherwise they agree with them. The ophicephalous pedi- 

 cellariæ (PI. VII. Fig. 42) are somewhat more elongate. Tridentate pedicellariæ are 

 found, though exceedingly scarce; they are small, c. 05 mm. (head). The valves 

 (PI. VI. Fig. 48) are simply leafshaped, without meshwork in the bottom; they join 

 in their whole length. The edge is a little sinuate in the outer part, otherwise 

 smooth. The triphyllous pedicellariæ (PI. VII. Fig. 12) are a little widened in the 

 outer part of the blade. The buccal membrane contains a ring of rather large, 

 rounded plates in the oral edge, otherwise only bihamate spicules in rather great 

 number. In the tubefeet these spicules are very scarce. The spines are rather 

 slender, swollen at the point, without central thorn (PI. II. Fig. 21). The primary 

 spines are green, the secondary ones white, faintly tipped with violet. 



The specimen here described cannot belong to any of the other species of 

 Amblypneusles, since it differs from griseus in the high shape of the test, from for- 

 mosus and ovum in its clubshaped spines. Thus I cannot agree with Agassiz, who 

 is convinced Ihnl A. pallidus will prove identical with formosus (Rev. of Ech. p. 482), 



') Ann. Nat. Hist. 6. Scr. II. 1888. p. 402. 



'') Catalogue Ech. in the Au.stralian Museum. I. Ecliiui. 1891. p. 52. 



^) On some genera and .species of the Teninopleuridæ. I'roc. Zool. Soc. 188Ü. 



