Plate i6. 

 Beroe ovata. 



Fig. 72. Immature, 30 mm. high, Willoughby Harbor, Hampton 

 Roads, Virginia, October 31, 1904. Lateral diverticula 

 from the meridional vessels close to outer surface; they 

 occasionally anastomose but do not join with paragastric 

 vessels. Yellow color apparently due to parasitic plant 

 cells. 



Fig. 73. Mature, 1.5 times natural size. Key West, Florida, June 

 7, 1897. 



Fig. 74. Yotmg stage, showing an aberration quite often observed 

 in the young wherein the subtentacular rows of combs 

 are shorter than the subventral. Charleston Harbor, 

 South Carolina, September 7, 1897. 



Fig. 75. Aboral pole of the ctenophore shown in figure 74. ad, 

 adradial canal; /, funnel; fs, the two lateral funnel-tubes; 

 g, paragastric vessel; i, interradial canal; st, subtentacu- 

 lar canal and row of combs; sv, subventral canal. 



