MR. E. R. LANKESTER ON NEW BRITISH POLYNOINA. 377 
ANTINOË ZETLANDICA, n. Sp. 
Corpus late pyriforme, antice latius, postice subito attenuatum. Lobus cephalicus 
æque longus ac latus, antice duas prominentias maximas præbens; oculi 4, duo 
postici in vertice, duo antici laterales. Antennæ filiformes, lobo cephalico sesqui- 
longiores. Tentaculum inter prominentias frontales insertum, articulo basali 
magno. Palpi validi, percrassi. Elytra densa, dura, tuberculis marginalibus, primo 
pari suborbiculari excepto reniformia. 
Color.—Elytra brunnea, interne margaritacea. Setæ fulvæ. 
Longit. 50 millim. (circiter). 
Latit. 35 millim. (circiter) cum setis. 
Hab. ad oras Zetlandicas. 
Tab. LII. fig. 13. Pars cephalica, aucta; figs. 17,18. Elytra; fig. 22. Seta neuropodialis ; fig. 23. Seta no- 
topodialis. 
This species was dredged by Mr. Gwyn Jeffreys in Shetland, and deposited by him in 
the British Museum. It is chiefly remarkable for its great breadth and the large size of 
some of its elytra and setæ. The tentaculum is deficient in the specimen, and some of 
the elytra also. 
Hatosypna, Kinberg. 
Cephalie lobe anteriorly tripartite, for the purpose of forming the bases of the prosto- 
mial tentacle and of the antennæ. Elytra eighteen to twenty-one pairs, not always 
covering the back, extending to the end of the body, but not affixed to the few posterior 
somites. 4 
Subgenus ALENTIA, Malmgren. 
Body linear oblong. Elytra eighteen pairs, on the following truncal somites: 1, 3, 4, 
Bn. s. 29, 25, 28, 31, 34, 37, 38. Setze of the notopodium hair-like, not numerous, 
very obscurely serrulate. Setæ of the neuropodium much longer and broader than the 
others, numerous, bidentate at the apex, with very few spinules. 
HarosvpNA (ALENTIA) JEFFREYSIT, n. sp. foit 
Corpus lineare depressiusculum, utrinque æqualiter obtusum ; somitibus truncalibus 43. 
Lobus cephalicus latus, lateribus rotundatis; oculis 4, utrinque duo approximati. 
Tentaculum lobo cephalico quadruplo longius. Antenne et cirri tentaculares 
formå et longitudine tentaculi. Palpi validi, crassi, glabri, his longiores. Elytra 
tenuissima, mollia. 
Color. —Truncus brunneo-violaceus, lobus cephalicus purpureus. 
Longit. 60-70 millim. 
Latit. 14-16 millim. (cum setis). 
Hab. ad oras insulæ Hermi et Britanniæ australis. 
Tab. LI. fig. 12. Pars cephalica, aucta ; figg. 19, 20, 21. Somites truncales 1, 2, 3; figg. 26, 27. Sete. 
This species, which I met with at Herm, is, I believe, the same as that named Lepido- 
Setæ fulvæ. 
