230 



tnsriTED STATES NATIONAL MUSETJM BtJLLETIN 215 



Remarks: This species was recorded by Bagg as 

 Ptdmnulina punctulata (d'Orbigny), but it differs from 

 the latter in the less angular periphery, fewer chambers 

 per whorl, m having the umbilical sieve plate over the 

 large umbilicus, and in having the supplementary 

 interioareal apertural openings, in addition to the pores 

 in the sieve plate and the primary interiomarginal 

 apertiu-e. 



Sestronophora arnoldi Loeblich and Tappan, new 

 species, differs from Poroeponides lateralis (Terquem) 

 in being about twice as large, in having a more gradual 

 increase in chamber height, a less enlarged final cham- 

 ber, a wider umbilicus and an umbilical sieve plate, 

 and a more restricted series of supplementary apertural 

 pores. 



It differs from Eponides repandus (Fichtel and Moll) 

 in being nearly twice as large, in having less thickened 

 sutures and a broad umbUicus, umbilical sieve plate and 

 supplementary apertures on the face of the final 

 chamber. 



The specific name is in honor of Zach Arnold, in 

 recognition of his work on the life history of the Recent 

 Foraminifera. 



Types and occurrence: Holotype (USNM P3130) 

 and unfigured paratypes (USNM P3131) from the lower 

 Pleistocene, Santa Barbara formation. Pine Cone 

 Hollow, Santa Barbara, California. Collected by 

 F. C. Clark. 



Family Cassidulinidae d'Orbigny, 1839 

 Favocassidulina Loeblich and Tappan, new genus 



Plate 73, Figitbes 7-11 



Type species: Pvlvinulinafaims Brady, 1877. (Deri- 

 vation: /aw hovQ. Jamis, L., m., honeycomb +cassic^ 

 from cassida, L., helmet (cassidula), f., diminutive + ma, 

 L., diminutive; gender feminine.) 



Test free, lenticular, robust, periphery acute; cham- 

 bers biserially arranged and spiralling, as in Cassidulina, 

 each chamber extending to the umbilicus on one side 

 with only a small triangular portion extending over 

 onto the opposite side; sutures not visible from the 

 surface, obscured by the coarse smrface ornamentation; 

 wall calcareous, finely perforate, granular in structure, 

 ornamented by a honeycomblike secondary growth, 

 with relatively wide hexagonal open areas separated 

 by narrow but much elevated "partitions"; apertm*e 

 elongate, a slightly curved slit bordered by a very 

 narrow lip, and extending upward from the base of 

 the final chamber, near to and paralleling the anterior 

 margin of the chamber, and opening toward the side 

 opposite that on which the final chamber lies, each 

 successive aperture appearing on alternate sides of the 

 test, the region immediately smrounding the apertm-e 

 relatively smooth. 



Remarks: Favocassidulina, new genus, differs from 

 Cassidulina d'Orbigny in having the honeycomblike 

 secondary growth of the wall completely covering the 

 surface except for the area immediately smrounding 

 the aperture, and obscuring aU traces of sutures. 



Wood (1949, p. 250) recorded Cassidulina Javus as 

 radial in structure. We have rechecked the wall 

 structure of four different specimens, from Challenger 

 localities, and all have been granular in waU structure, 

 as are aU true Cassidulina. Apparently, some mistake 

 must have been made in the original diagnosis or in the 

 listing of this species as radial. 



Types and occurrence: Figured topotypes of 

 Favocassidulina favus (Brady) (USNM P3376a-d) and 

 unfigured topotypes (USNM P3102) from Challenger 

 station 300, at lat. 33°42' S., long. 78°18' W., at a 

 depth of 1375 fathoms, off the coast of Chile, southern 

 Pacific Ocean. 



Figured sectioned hypotype (USNM P4469) and 

 unfigured hypotypes (USNM P3210) of Favocassidulina 

 favus (Brady) from Challenger station 224, at lat. 

 7°45' N., long. 144°20' E., at a depth of 1,850 fathoms, 

 Caroline Islands, Pacific Ocean. 



Family Anomalinidae Cushman, 1927 

 Paromalina Loeblich and Tappan, new genus 



Type species: Paromalina bilateralis, new species. 

 (Derivation: paromalos, Gr., nearly even or equal-f- 

 in^, diminutive suffix; gender feminine.) 



Test free, planispiral, biumbUicate, both sides some- 

 what excavated centrally, periphery truncate; cham- 

 bers laterally inflated, with their umbilical margins 

 extending backward in a flap covering part of the 

 previous suture and chamber, the flaps more rarely 

 coalescing to obscure the commonly open lunbflicus; 

 sutures radial, depressed; wall calcareous, with clear 

 imperforate wafl on the sides and apertural face, 

 coarsely perforate truncate periphery; aperture a 

 broad low slit on the periphery bordered above by a 

 narrow lip, at the base of the fiinal chamber and against 

 the preceding whorl, with supplementary openings 

 beneath the umbilical chamber flaps on each side of the 

 test. 



Remarks: Paromalina, new genus, is similar to 

 Discanomalina Asano in being planispiral, with broad 

 periphery and depressed sides, but the present genus 

 has the clear imperforate-appearing shell wall on both 

 sides of the test, and is coarsely perforate only on the 

 truncate periphery. Discanomalina has the clear shell 

 material and chamber flaps with secondary openings 

 only on one side of the test, the entire opposite side 

 being coarsely perforate, and lacking the umbilical 



In addition to the type species, Anomalina coronata 

 Parker and Jones, 1857, and A. coronata var. crassa 

 Cushman, 1931, also belong to this genus. We believe 

 the latter should be considered a distinct species, 

 Paromalina crassa (Cushman), and not a variety of 

 coronata. 



Asano (1951, p. 13) had considered Anomalina 

 coronata to belong to Discanomalina, but in describing 

 that genus he stated "wall calcareous, coarsely per- 

 forate except for a large area of clear shell material 

 in the umbilical region of ventral side." However, 



