MILIOLIDAE—PENEROPLIS. 79 
Peneroplis carinatus d’Orbigny. 
Peneroplis carinatus d’Orbigny, Voy. Amér. Mérid., vol. 5, pt. 5, 1839, ‘“ Foraminiféres,’’ 
p. 33, pl. 3, figs. 7, 8-H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 
p. 205, pl. 13, fig. 14—Cushman, Proc. U. 8. Nat. Mus., vol. 59, 1921, p. 75, pl. 
18, fig. 12. 
At two stations in the area there were abundant specimens which 
can be referred to P. carinatus d’Orbigny, but it does not seem to 
occur elsewhere. It was very rare in the Jamaican collection. 
Peneroplis planatus (Fichtel and Moll). 
Peneroplis planatus d’Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 285, No. 1; Modéles, 1826, 
No. 16.—H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 204, pl. 13, 
fig. 15—Cushman, Proc. U. 8S. Nat. Mus., vol. 59, 1921, p. 75, pl. 18, fig. 9. 
Next to P. proteus this is the most common species of the genus 
in the collection. There are two forms, one in which the test is 
very thin and translucent, with the surface ornamented by numer- 
ous fine, longitudinal cost, the other with a thicker test, the surface 
smooth. 
Peneroplis proteus d’Orbigny. 
Peneroplis protea d’Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, “‘ Forami- 
niféres,"’ p. 60, pl. 7, figs. 7 to 11. 
Peneroplis dubius d’Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, ‘ Forami- 
niféres,”’ p. 62, pl. 6, figs. 21, 22. 
Peneroplis proteus Cushman, Proc. U. S. Nat. Mus., vol. 59, 1921, p. 75, pl. 18, figs. 13 to 19. 
Peneroplis proteus is by far the most common species of the genus 
in the region, occurring at nearly all of the stations, and often in 
very considerable numbers. The figures I have given, the specimens 
from Jamaica, with those given by d’Orbigny, show the range of 
form in this West Indian species. The surface is smooth and glossy, 
sutures distinct, and its general characters, in spite of the variability 
of outline, are very distinctive. P. dubius d’Orbigny is undoubtedly 
the young of this species. I found it common on the north coast of 
Jamaica and it seems to be widely distributed in the general West 
Indian region and perhaps elsewhere. D’Orbigny’s specimens were 
from Cuba and Jamaica. The figures given by Brady (Rep. Voy. 
Challenger, Zoology, vol. 9, 1884, plate 14, figs. 3, 4) are probably 
this species. 
Peneroplis arietinus (Batsch). 
Peneroplis arietinus Parker, Jones, and Brady, Ann. Mag. Nat. Hist., ser. 3, vol. 16, 1865, 
p. 26, pl. 1, fig. 18.—H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 
p. 204, pl. 13, figs. 18, 19, 22.—Cushman, Proce. U. 8. Nat. Mus., vol. 59, 1921, 
p. 75, pl. 18, fig. 10. 
There is only one specimen in the entire collection which can be 
referred to this species. This, however, is of the typical form. It 
was also rare at Montego Bay, Jamaica. 
