6 PEOCEEDINGS OF THE NATIONAL MUSEUM vol.67 



SIPHOGENERINA RAPHANUS (Parker and Jones), var. TROPICA, new variety 



Plate 1, fig. 5; plate 5, figs. 7, 8 



Description. — Variety differing from the typical in the shape of the 

 test, which is tapering, wall thicker, the sutures less distinct, and the 

 apertural end with a definite neck and flaring phialine lip. 



This is the variety figured by Brady in the Challenger Report ^ 

 and which I have figured.^ 



This variety so far as known is confined to the Pacific in shallow 

 water about coral reefs. Type specimens are from Albatross D 5178 

 in 78 fathoms near Romblon. 



SIPHOGENERINA RAPHANUS (Parker and Jones), var. TRANSVERSUS Cuahman 



Plate 1, fig. 6 



Si-phogenerina raphanus (Parker and Jones), var. transversus Cushman, 

 Bull. 103, U. S. Nat. Mus., 1918. p. 64, pi. 22, fig. 8. 



Description. — Test subcylindrical, composed of comparatively few 

 chambers, the earlier ones spirally arranged, later and greater por- 

 tion of the test uniserial, sutures very prominently indented, between 

 the longitudinal costae which are few in number; aperture with a 

 short cylindrical neck, lip not evident. 



Length of type specimen 1.25 mm.; breadth 0.54 mm. 



This variety was originally described from the Culebra formation 

 of the Panama Canal Zone in dark clay, north of Pedro Miguel 

 Locks. I have material of this same variety from Brasso, Trinidad, 

 British West Indies, collected by F. W. Penny. 



This is related to S. Meinpelli Cushman, but the costae are fewer 

 and stronger, and the indented portions below the sutures deeper. 



SIPHOGENERINA COLLOMI Cushman 



Siphogenerina collomi Cushman, Cushman Lab. Foram. Res., vol. 1, pt. 1, 

 1925, p. 2, pi. 4, fig. 3. 



Test large for the genus, fusiform, greatest width above the 

 middle; early chambers irregularly spiral, later ones uniserial, dis- 

 tinct; sutures depressed, strongly curved, extending back on the 

 costae to a considerable distance; test ornamented with very high, 

 plate-like costae, usually ten in number, last-formed chamber smooth; 

 aperture with a very short cylindrical neck and phialine lip. 



Length up to 1.60 mm,; breadth 0.65 mm. 



Type specimens (Cushman Coll. No. 4325) from Monterey shale, 

 sec. 24, T. 28 S., R. 14 E., San Luis Obispo County, California, col- 

 lected by W,. D. Kleinpell. 



This species is nearest related to Siphogenerina spinosa Bagg from 

 the Miocene of Maryland and S. lamcllata Cushman from the Mio- 

 cene of Florida. The species is named for Roy E. Collom, well- 

 known geologist of California. 



' PL 75, flgs. 23, 24. 



• Bull. 100, U. S. Nat. Mu"., vol. 4, 1900, pi. 66. Hg. 7. 



