OF SOUTIIEEX INDIA. 
21 
only anteriorly provided with an aperture. A further doubtful genus is d’Orbigiiy ’s 
Lriterojliisirellorio . The only species known is not to he distinguished from a 
Stichopom, of which the marginal cells have been lost. 
6. SlicIioporiiHi* Stoliezka. Colonies in form similar to Lunulitesi ; cells 
urceolate, moderately inflated, polygonal, Avitha small, rounded suhtermiual aperture, 
increasing in size and becoming ovate towards the periphery, hut without any 
vihracula. 
6. Conescharellina, d’Orb. Colony conoid, solid, composed of cells radiating 
from a longitudinal axis ; cells urceolate, provided Avith a rounded aperture, Avith or 
Avithout aAucularia, and sometimes Avith smaller interposed cells Avhich probably re- 
])resent vihracula. Type, C. auipislala, d’Orb., recent. Other species are found l)oth 
recent and in tertiary deposits. 'With this genus Balapora^ of Ileuss is cAudently 
identical. 
7. Trochopora, d’Orb. Colony conoid, solid, composed of long cells, ari'anged 
more or less parallel or inclined to the longitudinal axis, flattened on the surface and 
])rovidcd Avith large apertures, Avithout any avicularian or vibracular cells. Type, 
Tv. conicci, Defr., from tertiary beds. 
8. Cupularia, Lamx. Colonies depressly empuliform, conA'ex or slightly flat- 
tened ahoA'C, concave or flat bcloAv ; composed of a single layer of radiatcly ar- 
ranged cells, depressed above, and each provided Avith a small vibraculum above the 
aperture. 
From this genus, d’Orbigny’s Biscoporella and Discojlustrella are, I bclicA-e, 
not gcncrically distinct. 
9. Dq)lotaxis, Ileuss (Sitzungsh. Akad., AVien, TI. N. Klasse, Anl. 55, 1807, 
pt. 1, p. 231). Colony discoid, convex above, plain or slightly concave hcloAv, cells 
radiating from a centre and increasing in length tlie more they are distant from it ; 
their outer smTace is generally flattened, irregularly polygonal, and indistinctly spirally 
arranged ; on the convex surface all are provided Avith large irregularly OA'ate or 
rounded apertures, and each has a small vibraculum on the anterior end ; on the 
concave side only some of the cells have elongated apertures, others are closed; 
vibraeula are fcAV, except a roAV at the periphery. Type, B. placentula, from loAA’er 
oligocsen beds. 
This is an abnormal form of SELF.yARiin.ii, and forms an intermediate link 
betAveen the typical species of the family and Ovhitidipova, Bicnpularia, and 
Flahellopora, all AAdiich might almost Avith equal propriety be classed in this place, 
instead of in the proximity of Celleporovia. 
* Sitzungsb. Akad., AVien, M. X. Klasse, vol. 15, 18G3, p. 92, and Keuss, ibidem, 18C7, vol. 55, pt. I, p. 219. 
t Ibidem, 1867, vol. 55, p. 223. 
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