ANTELON LIREVICUNEATA. 'i^V' 



blunter again about the 40th joint , more oblong , and squarer 

 or slightly elongated towards the arm-ends. 



First syzygium on the third brachial; the next between 

 18 and 23; then an interval of 6—18, usually 7 — 11 

 joints between successive syzygia. Lower pinnules stiff. 

 The first pair small; the next pair nearly twice their 

 length, and the following ones, on the sixth and seventh 

 brachials respectively, are the longest on the arm , consist- 

 ing of about 30 stout cylindrical joints. 



Pinnule on the eighth brachial nearly as long as that on the 

 sixth , but the next pair are much smaller , after which 

 the size increases very gradually till near the arm-ends; 

 but the outer pinnules though slender never become spe- 

 cially long. 



The pinnules on the tilth and seventh brachials are nearly 

 equal on some of the smaller arms and the relative sizes 

 of all the lower pinnules are apt to vary a good deal 

 upon arms which have been restored from the first or sec- 

 ond brachials. 



Disc, naked and much incised; 17 mm. in diameter. 



Spread , about 2Ü centim. 



Colour. Skeleton grey up to the last axillary. Arm-ba- 

 ses grey or white, and marked with a double row of pur- 

 plish spots. The first of these is near the outer end of 

 the line between the second and third brachials; the next 

 towards the inner end of the line separating the third and 

 fourth joints , and so on alternately on opposite sides for 

 four or five joints. Beyond this limit the arms are dark 

 purple , or almost black , with occasional white patches. 

 Sacculi numerous along the pinnule ambulacra. 



Locality. Amboyna. 



The peculiar colouring and the large size of the third 

 pair of pinnules readily distinguish this species among the 

 few Antedons hitherto recorded from the Moluccas. 



8. Antedon hrevicnnenta , n. sp. 



Description of an individual. 

 Centrodorsal a thick disc with a slightly hollowed 



Notes from the Leydeii Museum, Vol. lU. 



