382 NOTES AND EXHIBITS. 



for the secretion of the gland, and that the produced and sheath- 

 like posterior lobe of the pelvic fin serves to enclose and protect 

 the pouch and the claspers. 



Explanation of Plate X. 



Fig. 1. The clasper of Heptanchus indicus seen from the right side the 

 apex of the right pelvic fin drawn forward and the right clasper drawn 

 backwards. Drawn from a photograph, reduced to one-third. 



Fig. 2. The left clasper from the front, the posterior lobe of the pelvic fin 

 drawn to one side. 



o— entrance to glandular pouch, b— outer surface of pouch, b' — apex 

 of clasper. c— apex of posterior lobe of pelvic fin. d— vascular inner 

 surface of the posterior lobe of the pelvic fin forming sheath for clasper. 

 c—pelvic fins, /—anal fin. g — dorsal fin. h— opening of cloaca, k — 

 urogenital papilla. I — abdominal pores, a rod passed into the left. 



NOTES AND EXHIBITS. 



Mr. "W. A. Haswell read the following note: — 



In part 7, of the Transactions of the Linnean Society (Sep- 

 t< mber, 1883), is a paper by Mr. A. G. Bourne " On certain 

 Points in the Anatomy of the Polynoina, and on Polyno'e (Lepi- 

 donotus, Leach) clava of Montagu," in which occurs the following 

 foot-note : — 



" Since this was written Mr. W. A. Haswell, M.A., B.Sc, in 

 " A Monograph of the Australian Aphroditea," (Proc. Linn. Soc , 

 New South Wales, vol. vii.) lias described the segmental oi'gan in 

 P. (Antinoe) praeclara, and P. (AntinoeJ Wahlsi allied to P. pellu- 

 cida, Ehlers. That author has also arrived at the conclusion that 

 Elders has not seen the true segmental organs, but only intestinal 

 caeca, he describes the former as opening at the ventral tubercles, 

 but does not give any figures." 



