185.  Pangonia roei. (n.s.) P. rostro brevi tota ferruginea nitida, abdomine subtus testaceo alis fulvo-hyalinis apice margineque exteriori saturatioribus fasciisque duabus mediis obscuris marginalibus.  Pangonia roei.  Captain P.P.  King manuscripts.

Obs.  This insect has been named after Lieutenant John S. Roe, R.N.; one of the assistant-surveyors of the expedition.

186.  Anthrax prae-argentatus (n.s.) A. supra niger pilis flavescentibus tomentosus subtus albidus, ore albo, pedibus nigris, alis brunneo-hyalinis margine exteriori saturatioribus apice albis.

187.  Anthrax bombyliformis (n.s.) A. nigro-bmnneus post-scutello ferrugineo, abdomine supra ad basin fulvo apice albo fasciaque media fusca, subtus albo pedibus atro-brunneis alis hyalinis basi margineque exteriori fuscis maculisque aliquot discoidalibus.

188.  Musca splendida.  Don.  Ins. of New Holland.

Class ARACHNIDA.

189.  Nephila cunninghamii (n.s.) N. thorace sericeo cinereo, geniculis incrassatis pedibus nigro-fulvis, tibiarum primo et postremo pari flavo-annulatis.  Nephila cunninghamii.  Captain P.P.  King manuscripts.

Named after Mr. Allan Cunningham, the botanist of the expedition.

Obs.  The genus Nephila has been very properly separated from Epeira by
Dr. Leach in the Zoological Miscellany.

190.  Uloborus canus (n.s.) U. albescens thorace convexo, pedum pari secundo longiori, femoribus nigro-punctatis.

191.  Linyphia deplanata (n.s.) L. rufo-testacea mandibulis pedibusque apicem versus nigris, thorace sub-circulari plano, pedum secundo pari longiori.

Obs.  The principal difference of this spider from the genus Linyphia, as characterized by Latreille, consists in the circumstance of the two largest of the four middle eyes being the posterior ones.  The palpi of the male are in this species each provided with a spiral screw resembling the tendril of a vine.

192.  Thomisus morbillosus (n.s.) T. pedibus quatuor primis longioribus, cinereus thorace macula postica sublunari magna viridifusca, pedibus sub-geminatim fusco maculatis.

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CIRRIPEDES.

Anatifera sulcata.  Gray, Ann.  Phil. 1825. 
Pentalasmis sulcata, Leach. 
Montague, Test.  Brit.

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RADIATA.

CENTRONIA.

1.  Echinus ovum ?  Peron and Lesueur.  Lam.  Hist. 3 48.

This specimen, presented to the Museum, agrees very well with the short description given by Lamarck of this species.

2.  Echinus variolaris.  Lam.  Hist. 3 47.

This specimen, agreeing very well with the description of one found by Peron, is very remarkable; and has the larger area agrulate and ornamented with two rows of white tubercles, nearly as large as those in the genus Cidaris; the pores in the upper part are not perforated, and are placed in segments of circles round small tubercles.