118 



I find them to be, as Hell states, connected above. (Also in a specimen received 

 from Prof. Dödkrlein the auriciUæ unite.) As these specimens otherwise agree 

 well with the description, the statement of Woons probably may be due to his 

 having confounded more than one species in his „Echinus" darnleyensis. He de- 

 scribes the spines as being „rose pink, dull green or reddish, and sometimes banded 

 or lipped with yellow". Such a wide range of colours in a single species appears 

 to me rather improbable. My experiences tend to show that colours in Echinids 

 are generally much more constant than is commonly supposed, and I find colour in 

 many cases a very good additional specific character. Thus all my numerous spe- 

 cimens oi G. piilchellus, without exception, show a similar coloration, and the same 

 is the case with the different 5a/;j)arjs-s|)ecies, Pleurechinns etc. 



In the Museum of Copenhagen are preserved two specimens of a small 

 Echinid from Funafuti, which agree in several respects with G. darnleijensis, but 

 differ in other characters so much from that species that they must certainly form 

 a distinct species, which I may describe here as (ilynniechinus iucoiii^picuns n. sp. 



The form of the test is beautifully rounded, the height being more than half 

 as large as the diameter of the test (6 mm. to a diameter of 10 mm.); it is regu- 

 larly arched on the abactinal side. The primary tubercles of both areas form a 

 regular vertical series, the ambulacral almost as large as the interambulacral 

 ones. The ambulacral plates carry a secondary tubercle at the upper edge of the 

 plate inside the primary one, at the ambitus there may also be a tubercle at the 

 median edge. On the interambulacral plates there are two secondary tubercles at 

 the upper edge, one to each side of the primary tubercle, further one inside and 

 two outside the primary tubercle, all these secondary tubercles together forming an 

 almost regular circle round the primary one. The apical system is like that of 

 darnleyensis, with the periproct in the normal position and the anal opening cen- 

 tral and surrounded by a circle of rather large plates. In Ihe larger specimen (10 mm.) 

 one ocular plate reaches the periproct, in the smaller one (8 mm) they are all 

 excluded. There is a rather large tubercle on all the ocular plates, none on the 

 genital plates. The latter have a little area in the middle composed of more open, 

 reticular tissue, looking like the madreporic plate, whereby the curious aspect is 

 produced, as if all the genital plates were madreporic plates. The mouthslits are 

 very small and indistinct; the auriculae unite in the larger specimen, and one pair 

 of them does so in the smaller specimen. The buccal membrane is quite bare, with only 

 a few bihamate spicules; the buccal plaies, which are placed at the same distance 

 from the mouth-edge, carry some pedicellariæ. The gills contain numerous biha- 

 mate spicules, but no, or — in the small specimen — onlj' a few fenestrated plates. 

 The globiferous pedicellariæ have no glands on the slalk; the glands of the 

 valves are small: no spicules found. The valves are like those of darnleyensis. 

 The tridentate pedicellariæ are very different from those of darnleyensis (PI. VI. 



