DK. BAIBD ON THE APHRODITACEAN ANNELIDES. 107 



Though tliis species is stated hj Kiuberg only to occur in tlie 

 Straits of Magellan, we have in the collection a considerable num- 

 ber of specimens brought from various habitats, though all from 

 the South Atlantic Ocean. We have them from Hermit Island, 

 Cape Horn — from the Falkland Islands — the sea off" Crozet's 

 Island, Kerguelen's Land — and, though with some doubt, from the 

 shores of New Zealand. They were collected chiefly by the officers 

 attached to the Antarctic Expedition {Mus. Brit.). 



Sp. 2. Hermadion magelhaense, Kinberg, I. c. and Fregatt. Eu- 

 gen. Bern, p. 22, tab. 6. figs. 32, 32 a-32 h. 

 Hah. Straits of Magellan, Kinberg. 



Sp. 3. ? Heemadiois" extenuatum. 



Polynoe extenuata, Grubey Actin, Echin. und Wiirm. Aclriat. und Mit- 



telmeers, p. 86. 

 Sab. Adriatic and Mediterranean Seas, Grube. 



Sp. 4. ? HEBMADIOlSr pellijcidfm. 



Polynoe pellucida, Ehlers, die BorstenwUrm. i. 105, t. 3. f. 5, 7-14, t. 4. 

 f. 1-4. 



Hab. Quarnero, Istria, Ehlers. 



These two latter species are doubtfully referred to this generic 

 group, S, pellucidum having only 10 pairs of elytra. 



Sp. 5. ? Heemadion teochiscophoeum. 



Polynoe trochiscophora, Schmarda, Neue ivirb. Th. p. 151, tab. 36. f. 

 310, 310a, b. 



Hab. Table Bay, Cape of Good Hope. 



This species, apparently belonging to this genus, has only 12 

 elytra, instead of 15. Notwithstanding this discrepancy, the 

 place for it seems to be here. 



Sp. 6. Heemadion feeox, sp. nov. 



This very striking species is about 2 inches long, exclusive of 

 the proboscis. The colour of the whole dorsal surface, except the 

 bristles of the feet, is nearly black ; and the ventral surface is of a 

 dark pearly hue. It is slightly attenuated at the inferior extre- 

 mity. It has a singular appearance, from the very strong, straight 

 spines on the dorsal branch of the foot, which extend nearly an 

 inch from the body, and give it a ferocious aspect. 



The head is of moderate size ; eyes large and round ; tentacle 

 very short, thick at the base, setaceous at the point. Antennae 

 a little longer, fixed by their bases imder the tentacle, setaceous ; 

 palpi long, thick at the base, setaceous at the point. Proboscis 



linn. PEOC. — ZOOLOGT, TOL. Till. 15 



