kofoid: new species of dinoflagellates. 199 



Length, 112 p ; dorso-ventral diameter of midbody 9 p ; width of transverse 

 furrow, 6 fi. 

 Station, 4740. 



Amphisolenia lemmermanni, sp. nov. 



Plate 14, Figs. 88, 89. 



A species of medium size with broadly fusiform midbody, elongated, straight 

 antapical stem with terminal expansion deflected to the right. The head is 

 oblique, the neck about 1.4 times the dorso-ventral diameter of the midbody in 

 length, and the terminal expansion of the antapex with three acute spines, one 

 on the left side a short distance above the end at the point of deflection of the 

 spreading antapex which is carried out on its dorsal and ventral angles in the 

 other two spines. A slight knob-like expansion at the end of the straight sec- 

 tion is connected by lists with the terminal spinules. 



Length, 565 fi ; dorso-ventral diameter of the midbody, 40 p. 



Station, 4730. 



Amphisolenia palaeotheroides, sp. nov. 



Plate 14, Fig. 84. 



Body stout, its length 20-36 times the greatest dorso-ventral diameter, 

 elongated fusiform with central swelling scarcely differentiated. Flagellar pore 

 removed from the apex 0.12 of the total length. Antapex twisted slightly, 

 terminating in an oblique asymmetrical enlargement with three large, stout, 

 terminal spines. A similar stout spine at the beginning of the obliquity a short 

 distance above the antapex. Collars with few ribs, transverse furrow ribbed 

 and porulate. 



Length, 426-605 fi ; dorso-ventral diameter of body, 12-24 /x. 



Station, 4732. 



Amphisolenia projecta, sp. nov. 



Plate 13, Fig. 77. 



A small species of the A. thrinax group with bifurcated antapex whose 

 ventral limb resembles that of A . bifurcata while the dorsal one is a knob-like 

 prominence without spinules or lateral asymmetry. Body elongated with 

 fusiform midbody. Total length 17 times the dorso-ventral diameter. Flagel- 

 lar pore to apex 0.16 of the total length. Bifurcation to antapex 0.2 of the 

 total length. Ventral limb of antapex fusiform, with four spinules, one lateral, 

 and three terminal, limb deflected to the right at level of the lateral spinule. 

 Dorsal limb equal to dorso-ventral diameter of midbody in length, clavate, its 

 length twice its width. 



Length, 185 fx; dorso-ventral diameter, 11 p. 



Station, 4701. 



