GIGLIOLI, ON THE GENUS CALLIDINA. 207 
sides and sub-obtuse angles; compartments of the border 
with large, remote cellules; central triangle with smaller, 
radiating, oblong cellules ; pseudo-nodular blank spaces trans- 
versely oblong; pseudo-nodules large, fillmg up the angles. 
Distance between the angles 0025”. (Fig. 23.) 
Hab. Barbadoes deposit, from Cambridge estate ; G. Nor- 
man, Esq. 
In this fine species we have, for the first time, the inner 
triangle filled up with cellules only, there being no veins or 
coste in this part whatever. These oblong cellules do not 
form radiating lines, but they all occupy a radiating position. 
Those of the lateral compartments are more or less circular, 
large, and few (5 to 7 for the most part) in each. The 
pseudo-nodules are very large, fillmg up a considerable 
angle, minutely punctate, and in juxtaposition with the large, 
transversely oblong, pseudo-nodular blank spaces. The 
margin is striated, an exceptional character in the genus. 
Entogonia punctulata, n. sp., Grev.—Valve with straight 
sides and obtuse angles; inner triangle filled up with minute 
radiating puncta; lateral compartments remotely punctate ; 
pseudo-nodules large, rounded, having a_ hemispherical 
blank space at their base. Distance between the angles 
about °0030”. 
Hab. Barbadoes deposit, from Cambridge estate; G. Nor- 
man, Hsq., R. K. G. 
This species differs so obviously from the preceding that it 
is unnecessary to enter into a minute description. In gene- 
ral habit it resembles some of the species of the first section, 
but the punctate inner triangle and non-striated margin at 
once separate it. There is a very striking appearance of a 
pore at the outer extremity of each of the costs which 
divide the border into compartments, a feature I have not 
observed in any of the other species. 
On the Genus Catiipina (Ehr.); with the Duscription and 
Anatomy of a New Srrcies. By Henry GIcLio.t. 
Tue genus Callidina was founded in 1830 by Ehrenberg, 
to receive the then only known species C. elegans, discovered 
by the Prussian zoologist himself in Berlin. This genus 
belongs to the Philodinade, and its members are character- 
