1906.] ON AN UNKNOWN MAEINE ANIMAL. 719 



EXPLANATION OF PLATE LII. 



Fig. 1. Zygantroplana verrilli, sp. n. : p. 709. Appearance of a specimen cleaved 

 in cedar-wood oiL X c. 15. 



2. Longitudinal section of the same (diagrammatic). 



3. Group of nematocyst-like structures from the dorsal epidermis of a specimen 



of Anonymus virilis (?) : p. 712. X 500. 



4. Transverse section across the body of Trmmfelsia elongata (p. 714) at the 



level of the penis and accessory male glands (diagrammatic). X 50. 



5. One of the accessory male glands more highly magnified. X 450. 



acc.ves., accessory vesicle. 

 a.m., antrum masculinum. 

 ant., antrum. 



al., alveolus of gland. 

 b.m., basement-membrane. 

 br., brain. 

 cajp., capsular cells. 



d., duct. 



d.', duct epithelium. 



_/., threads of nematocysts 



ff., main gut 



Explanation of lettering of the JFigures. 



gl., accessory male gland. 

 glom., glomerulus. 

 nem., nematocysts. 

 nuc, nucleus of epidermal celL 

 ov., ovarj'. 

 ph., pharynx. 



sec, secretion of glomerulus. 

 te., testis. 

 lit., uterus. 

 v.d. vas deferens. 

 (J, penis. 



g.', gut-branches. I $ , external opening of vagina. 



7. Description of an unknown Animal seen at ISea off the 

 Coast o£ Brazil. By E. Q. B. Meade- Waldo, F.Z.S., 

 and Michael J. Nicoll, F.Z.S. 



[Received June 19, 1906.] 



(Text-figure 114.) 



The following are accounts of a large marine animal (text- 

 fig. 114, p. 720) seen off the coast of Brazil, copied from the 

 journals made by us during our cruise in the Earl of Crawford's 

 yacht ' The Valhalla ' :— 



" On Dec. 7th, 1905, at 10.15 a.m., I was on the poop of the 

 ' Valhalla ' with Mr. Nicoll, when he drew my attention to an 

 object in the sea about 100 yards from the yacht; he said: 'Is that 

 the fin of a great fish ? ' I looked and immediately saw a large 

 fin or frill sticking out of the water, dark seaweed-brown in 

 colour, somewhat crinkled at the edge. It was apparently about 

 6 feet in length and projected from 18 inches to 2 feet from the 

 water. I could see, under the water to the rear of the frill, the 

 shade of a considerable body. I got my field-glasses on to it 

 (a powerful pair of Goerz Trieder), and almost as soon as I had 

 them on the frill, a great head and neck rose out of the water in 

 front of the frill ; the neck did not touch the frill in the water, 

 but came out of the water in front of it, at a distance of certainly 

 not less than 18 inches, probably more. The neck appeared 

 about the thickness of a slight man's body, and from 7 to 8 feet 

 was out of the water ; head and neck were all about the same thick- 

 ness. The head had a very turtle-like appearance, as had also the 

 eye. I could see the line of the mouth, but we were sailing pretty 



Peoc. Zool. Soc— 1906, No. XLVIII. 48 



