300 COXTIUBUTIONS FROM THE NATIONAL HERBAUIUM. 



Dailicella (jraclhs Eluvnh, Bor. Akad. Wiss. Berl. 1840: 204. 1841, 



Biddul phUi sandbarica Sdinndt, Atlas pZ. 122. f. 10-12, 1S88. 



Denlicella zanzibarica Bv Tuiii, SjlL Alg. 2: 8SG. IS04. 



This well-known and variable species is met with in large quantiti(^s at some of the 

 stations, ct^iM^cially at siationri 2844 and 33G1IL At station :\Mmi it is present, bnt 

 very rare. A minute and sirongly divergent variety oceuns at station 102911, which 

 is the same as that figured in Schmidt's Atlas, plate 122, figures 10 to 12, and named 

 B. i>(ins[barlca St^hmidt. There can be no ivasonable doubL of this being iL aurUa if 

 a carefid examination is made of its many varieties, or even if, lahing Schmidt's own 

 figures, we compare figure 2 and figure 7 with (igure 12, and also ligurt^ S with figures 

 10 and 11 in plate 122. De Toni not only accepts them as specifically distinct, but 

 assigns them to separate giuiera. (See the citaliuus above.) 



Found at stations 228711, 209011, 2844, 2848, 2859, 2882, 292011, 33G1II, 356911, 

 3635II, 3671H, 3()88II, 369111, 3G92lf, 369411, 370411, 391211, 4013II, 401411, J029II, 

 off central Cabfornia to R<Tiiig Sea and south to Honshu and Hawaiian islands. 



Biddulpliia biquadrata (Jan.) !5oyer, Troc. Acad. Phila. 1900: 717. 190L 



Tnceratlum hiquadratum Jan.; Schmidt, Atlas pi 98, f. 4-C>, pi 99. f. 25-26. 1886< 



Jan. Gaz. Exped. pi 11. f. -/, 4-6. 

 I include figures 25 and 20 in Schmidt's Atlas, plate 99, as 1h(^y are certaiidy the 



same species as that figured in plate 98. Both come from the Gaztdle Expedition. 



Triceraliuiii junclmn S(4imidt'^ is very close to the above. 

 Found at station 2807, Galapagos Islands. 



roilis 



Tricerutnon 



consunilc Grun.; Van Hour. Synop. jjl 108. f. 2, 1881. S<hmi(U., 

 Atlas y>L^/^/. 13-14- 1885. 



The above figures n<K'd to be taken tog<4her. Schmidt's representation t)I the 

 general form is excellent, but his figure and description of th(^ secondary markings 

 are wrong. Grunow's own figure cited above shoM's that these are not a central no<bde 

 surrounded by a faint circle, but a central nodule and a row of l>right b(^ad-bke 

 puncta ch)se to and parallel to the walls of the hc^xagon-. 'Hu^ noduh' and the 

 puncta are in two plaiies of focus, so that when the n(jduhi is distinct the row of 

 puncta assumes the a|)i)earance of a ring. Hence Schmidt's mistake. 



Found at, station 2807, Galapagos Islands. 



Biddulphia culcitella I\lann, sp. nov. 1'late XLVI, figure 3. 



Valve rectangular, the four sides sharply concave; the four horns or i>rocesses 

 narrow and slightly i)rolonged beyond the border line; markings of beading, t^venly 

 and finely distributed over the entire valve in rows radial from the center, where six 

 or eight bi'ads are loosely grouped to form an indistinct rosette^ valve surface very 

 slightly convex until close to the margin, w4iere it curves rapidly dow^nward to the 

 ribb(Ml border; all specinK'ns are marked with two sets of strong hyaline ridges, one 

 forming a <Mrcle al>out tlu^ (^enter with a diameter of one-half that tjf the valve, the 

 other set consisting of two parallel ridg(^s proceeding backward from the base of eac4i 

 of th(^ four processes for a short distance, a\)<)ut one-eightlx the diameter of the valve, 

 where they separate at right angh\s and end at the margin. 



Diameter of valve (betw(nm two apices), COS I mm. 



Type in the U. S. National Museum, No. 5901:^6 from station 2807, Galapagos 

 Islands, April 4, 1888; 812 fathoms, bottom of Globigerina ooze and coral mud. 



This form is of the ^'Amphitetras;" type, and would be classed by some authors in 

 that genus (here united with liiddulphia) and by others in Triceratium, from which 

 these Biddulphia forms are here removed. 



t^ Schmidt, Atlas pi 98, J. 1-3, 19. 1886. 



