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Mr. C. O. Waterhouse on Coleoptera 
Plate XXIX. 
Fig. 1. Samus anonymm, Gray. Skeleton-spicule; end view (scale 
l-12th to 1-1800 inch). 
Fig. 2. The same. Skeleton-spicule ; lateral view (same scale). 
Fig. 3. The same. Flesh-spicule, (large) spined; end view (same scale). 
«, more magnified, to show the spined surface as indicated by 
the serrated margin; b, end of shaft, with smaller and un¬ 
branched arms. 
Fig. 4. The same. Flesh-spicules (small), bihamate ( fibula ). Scale 
l-12th to l-1800th inch, a, one more magnified, to show the 
microspination. 
Fig. 5. Corticium Wallichii, Cart. (1874). Skeleton-spicule (scale l-6tb 
to l-1800th inch), a a a, tubercles ; b, central canal. 
Fig. 6. The same. Skeleton-spicule without tubercles, early stage of 
development, a, central canal. Same scale. 
Fig. 7. The same. Flesh-spicule, sceptrellate (same scale). 
Fig. 8. The same. Flesh-spicule, more magnified (scale l-6th to l-6000th 
inch). Lateral view, a, shaft; b b, radiated disks. 
Fig. 9. The same. Flesh-spicule, radiated disks of; end view, a, shaft; 
b, capitate radii. 
Fig. 10. Amorphina stellifera, n. sp. a, skeleton-spicule; b, flesh-spicule, 
stellate. Scale l-24th to l-1800th inch. 
Fig. 11. Spinispirula. Flesh-spicule of Spongia Dysoni , Bk., much mag¬ 
nified (scale l-4th to 1-GOOOtli inch). 
Fig. 12. The same. Flesh-spicule from Spirastrella cunctatri.v, Sdt., mihi, 
from the variety on the crab’s back (scale l-l2th to 6000th 
inch). 
Fig. 13. Sceptrella. Flesh-spicule of Spongia Loveni, Bocage. 
Fig. 14. The same. Flesh-spicule of Latruncula cratera, Bocage. 
Fig. 15. The same. Flesh-spicule of Sceptrella regalis, Sdt. 
Figs. 16-21. The same. Various forms from the minute detritus of 
deciduous sponge-spicules in the root-bunch of JEuplecteUa 
cucumer from the Seychelles. Fig. 16. End view of one, so 
situated in the detritus. 
N.B. All the figures from 16 to 21 respectively are drawn to 
the same scale, for comparison, viz. 1-12th to 1-6000th inch. 
XXXIX.— An Account of a small Series of Coleoptera from 
the Island of Johanna. By Charles O. Waterhouse. 
A small series of Coleoptera has recently been added to the 
British-Museum collection from the island of Johanna. The 
specimens were collected by Mr. Bewsher; and among them I 
have detected three species new to science, for one of which I 
propose to establish a new genus. The following species 
were obtained:— 
1. Cicindela melancholica , Fabr. 
Three examples of this widely distributed species. 
