438 



PROCEEDINGS OF THE \ \TI<>\ \l. MUSEUM. 



vol. 38. 



Type-specimen. — Cat. No. 8229, U.S.N.M., from Albatross station 

 5145, vicinity of Jolo, Jolo Archipelago, 23 fathoms; attached to 

 hardened coral sand on the interior of a bivalve shell. 



REOPHAX PSEUDOBACILLARIS, new species. 



Description. 



Figs. 2, 3. — Reope w 



pse1 iacillaris. x 



20. From phoi ogb ipe 



Test elongate, arcuate, composed of a linear series 

 of chambers; chambers shorter than broad in sur- 

 face view, except the one last formed , which ap- 

 pears nearly spherical, numerous, sixteen to twenty 

 or more; wall arenaceous, fairly coarse for the size 

 of the test, slightly rough on the exterior; aper- 

 ture small, in the middle of the terminal face of 

 the chamber; color, dark reddish brown. 



Length up to 2 mm. 



Type-specimen. — Cat. No. 8226, U.S.N.M., from 

 Albatross station 5236, off the eastern coast of 

 Mindanao, Philippines; 404 fathoms. 



This species, while it has somewhat the appear- 

 ance of R. bacillaris II. B. Brady, is much smaller, 

 more arcuate, and has a dark reddish brown color. 



REOPHAX SPICULOTESTUS, new species. 



Description. — Test of medium size, composed of a linear series of 

 elongate chambers, oval, in a straight or more often 

 slightly curved line, contracted at the ends of each cham- 

 ber, increasing rapidly in size toward the apertural end : 

 perfect adult specimens with six or more chambers; 

 wall thin, composed largely of siliceous sponge spicules, 

 for the most part laid lengthwise of the test and (irmly 

 cemented; some sand grains present, usually neatly 

 cemented: aperture fairly large; color, grayish. 



Length up to 2 nun. 



Type-specimen. — Cat. No. 8227, I'.S.X.M., from Alba- 

 tross station 5236, off the eastern coast of Mindanao; 

 19 1 f.-ii boms. 



This differs much in form and size from R.spiculifer 

 II. B. Brady, as well as in the very different ap- 

 pearance of the test. Occurring as it does in com- Kl " ' Reopha^ 



..... . . SPICULOTEE 



pany with an abundance ol arenaceous specie-, it x 2 o. from 

 shows its selective power in the composition of its test. 



HORMOSINA OVALIFORMIS, new species. 



Description. Test composed of a straight or slightly curved series 

 of chambers closely joined to one anol tier; chambers evenly tapering 



at either cud, or slightly oval; aperture small, rounded; walls of line 



PlloTtxiKAI'll. 



