21 Spong. 
SPONQIIDA. 
flint-stone, about a foot in diameter, from Norfolk. The author considers 
that the 160 figured forms are assignable to 32 genera and 38 species of 
Sponges, viz., 4 species to the Monactinellidce, 20 to the Tetractinellidcc, 
6 to the LithisHidce, 8 to the Ilexactinellidai. 
IG. SEGU15NZA, G. Lo formazioni torziarie nolla provincia di Reggio 
(Calabria). Atti Ac. Rom. (3) Mem. sci. fis. vi. pis. iv.-xvii. 
Embraces a whole volume, and refers to Sponges among the other 
Animal groups ; a stratiographical arrangement is adopted. 
17. SoLLAS, W. J. On the Flint Nodules of the Trimmingham Chalk. 
Ann. N. H. (5) vi. pp. 384 & 437, pis. xix. & xx. ; cf. Rep. Brit. Ass. 
1880, p. 586. 
Describes (p. 386) a number of new species (vide infra) based on 
spicules from this Norfolk deposit, and discusses very fully (p. 437) the 
origin and relations of flints. 
Martin, K. Untersuchungen fiber die Organisation von Astylospongia^ 
Ferd. Roem., und Bemerkungen fiber die Natur der Wallsteine. 
Arch. Ver. Mecklenb. xxxi., pi.; also separately, Neubrandenburg : 
1877. 
[Not seen by the Recorder.] 
Reniera spp., spicules figured from flint; (15) pp. 21-23, pi. i. figs. 
16-19 & 22. Scoliorrhaphis? ; p. 23, pi. i. fig. 5. 
Tethya ? spp , spicules from flint ; (15) pp. 36-38, pi. iii. figs. 
Vioa sp. recorded from tertiary sand in East Galicia, by V. Hilber, 
Verb. geol. Reichsanst. 1880, p. 240. 
Cliona falunica^ Fischer, (16), pp. 56, 63, 88, & 135, and C. sp. ?, 1. c. 
p. 44, Miocene of Calabria. 
Cliona tiihidosa, sp. n., Seguenza, (16) pp. 89 & 135, pi. xii. fig. 29; C. 
vcrmicularis^ micropora, oostoma^ spp. nn., id. 1. c. p. 135, pi. xii. figs. 
30-32, Miocene of Calabria. 
Ilolastrclla wrighti, Carter, (14) p. 211, pi. xiv. B, fig. 2. Based on a 
stellate spicule very abundant in Carboniferous strata, Ben Bulben, Sligo. 
Rhopaloconus tuberculatus, Sollas, g. & sp. nn,, (17), p. 392, pi. xx. 
fig. 46, Chalk flint, Norfolk. Based on large conical spicule, tuberculated. 
Pachlylana hindi, Sollas, g. & sp. nn., (17) p. 392, pi. xx. figs. 44, 52, 
56, 64 & 69, Chalk flint, Norfolk. Perhaps allied to Geodia. 
Pachlylaslrellites fusifer and glohiger, Sollas, g. & spp. nn., (17) p. 390, 
pi. xx. figs. 28 & 39, respectively. Chalk flints, Norfolk. Allied to recent 
species of Pachastrella. 
Tethya newheryi^ McCoy, sp. n., Prodromus of the Palaeontology of 
Victoria, Decade v. p. 31, pi. xlviii. Irregularly lobate. Miocene, Gipps- 
land, Victoria. 
Tethylites cretaceus, Sollas, g. & sp. nn., (17) p., 390, pi. xx. fig. 42, Chalk 
flint, Norfolk. Very closely allied to Tethya lyncurium. 
Triphyllactie elegans^ Sollas, g. & sp. nn., (17) p,- xx. fig. 42. Pro- 
bably a Pachastrellid. 
