472 Mr. V. Bates on New Genera 



more magnified, to show: — a a a, reticulating lines of large 

 vitreous fibre imbedding minute sexradiates confusedly, running 

 over and covering in part b b, spinous lattice-like fibre imbedding 

 larf/e sexradiates regularly ; c c, puncta indicating microspines 

 on large viti-eous fibre ; d d, minute sexradiates. Diagrammatic. 



Fiff. 3. The same, minute sexradiate, more magnified, showing that one 

 end is united to the vitreous fi bre : a, minute sexradiate ; 

 b, vitreous fibre. 



Fiff. 4. The same. Rosette or flesh-spicule, also more magnified. Figs. 3 

 and 4 are upon the scale of l-48th to 1 -6000th of an inch. 



Fiff. 5. Farrea dettsa, sp. n. Fragment magnified on scale of l-48th 

 to 1 -1800th of an inch. From deciduous portions, upwards of 

 an inch in diameter, in the detiital mass enveloped by the 

 anchoring-spicLiles of Euplectella cucumer from the Seychelles. 



Fiff. G. The same. Portion of vitreous fibre of, more mag-nified, to show 

 that the summit of the spines is mucronate : a a, fibre ; bbb, 

 mucronate spines ; c c, mould of sexradiate spicule. Scale l-12th 

 to 1 -6000th of an inch. 



Fiff. 7. Arahescula parasitica, sp. n., parasitic on vitreous fibre of Aphro- 

 callistes Bocayei : a a, fibre ; b, portion of Arahescula. From 

 the specimen dredged up on board II.M.S. 'Porcupine ' in 500 

 fathoms, above mentioned ; also from the detrital mass of 

 Euplectella cucumer on the fibre of the foregoing species. Scale 

 about l-32nd to l-6000th of an inch. 



Fiff. 8. The same. Internal view, showing that there are distinct fronds, 

 a a, with projections, b, on the body and main branches here 

 and there, which appear to have been based upon the fibre on 

 which the Arabescula was parasitic. 



Fiff. 9. The same. Portion much less magnified, which appears to have 

 become separated from the fibre on which it had been parasitic. 

 Natural size about l-18th of an inch long by l-180th of an 

 inch in widest part. 



LV. — Descriptions of New Genera and /S^^eczes o/" Heteromera, 

 chiefly from New Zealand and Neiv Caledonia., together with 

 a Revision of the Genus Hypaulax and a Description of an 

 allied New Genus from Colombia. By Feederick Bates. 



As there is considerable activity just now displayed in the 

 publication of papers descriptive of the coleopterous fauna of 

 New Zealand, I have thought it might be acceptable to give 

 descriptions of all the species of New-Zealand Heteromera 

 contained in my collection that appear to be new to science. 



I have therewith incorporated a revision, together with 

 descriptions of new species, of my genus Hypaulax and 

 another, allied, new genus (Astathmetus) from Colombia. 



Of the genus Cilibe (peculiar to New Zealand) I have 

 established twelve species (ten of which are new, the ijhos- 

 2)hu(/oides, White, = elonyata, Breme) and two supposed 

 varieties. 



