138 



lU'LLETIX 120, UNITED STATES NATIONAL MUSEUM. 



I have had no material of this species, so quote from Bezzenberger's 

 description. 



Measurements. — Length of body 0.0822 mm.; width of body 0.0222 

 mm.; diameter of nucleus 0.007 mm.; length of cilia 0.0028 mm. 

 These are the measurements given by Bezzenberger, but do not agree 

 with his figures and his statement of the magnification of his figures. 

 The magnification of figure 102 can hardly be " ITOT diameters" and 

 that of figure 103 be " 350 diameters." 



This Cepedea has its anterior end rounded and its posterior end 

 elongated into a slender, tapering point. The nuclei are generally 

 four in number, more rarely they are five. They are of uniform 

 size and lie one behind the other in an axial row. The condition of 

 the chromatin is shown in figure 102 and in figure 103, a to e. The 



^ 



a , - _ 



Fig. 103. — Cepedea lanceolata ; nuclei magnified 350 (?) diameters, showing dif- 

 ferent PHASES OF MITOSIS ; (AFTER BEZZENBERGER) : O,. KeSTING nucleus ; 6, EQUA- 

 TORIAL PLATE STAGE ; C, DUMB-BELL DOUBLE METAPHASE ; d, EARLY I'ROPHASE ; P, ANA- 

 PHASE. The INTERPRETATION OF THE STAGES OF MITOSIS IS NOT FROM BEZZENBERGBIR, 

 BUT BY THE AUTHOR. 



number of macrochromosomes cannot be determined from Bezzen- 

 berger's figures, but seems to be unusually sm.all for a Cepedea., also 

 the nuclei are quite large. In both regards, in the size of its nuclei 

 and the number of its macrochromosomes, Cepedea lanceolata is more 

 like the Protoopalinas than are other Cepedeas. It may well be a 

 transitional species betAveen the two genera. 



Fig. 104. — Cepedea spinifera, x 4G0 diameters. 

 CEPEDEA SPINIFERA, new species. 



Type. — United States National Museum Cat. No. 16501. 



Host. — Oxyglossus lima Tschudi, one good infection from United I 

 States National Museum specimen No. 44022, 26 mm. long, fromj 

 Buitenzorg, Java, March 6, 1909. 



