Zoological Society. 521 



contains plenty of corpuscles, of which indeed it is almost entirely 

 made up in immature animals, from the embryo upwards, is rendered 

 ropy by alkalies and by saline solutions. This action of these solu- 

 tions, which is very remarkable on all animal fluids containing a great 

 quantity of fresh primary or isolated cells, appears to take place from 

 the effect on them of the reagents, as I have elsewhere described 

 with respect to the lymph-globules (Gerber's Anatomy, Appendix, 

 pp. 91, 96, and 97). In some recent experiments, however, these 

 globules were not destroyed, but only a little misshapen or made 

 rather fainter, after having been kept some days in solutions of mu- 

 riate of ammonia and other salts. 



"Descriptions of new species of Delphinula, a genus of Pectini- 

 branchiate Mollusks (Family Turbinacea) ," by Mr. Lovell Reeve. 



Delphinula Tyria. Delph. testa subdiscoided, squamed, an- 

 fractibus argenteo-albis, superne et inferne Tyrio-purpureis, laxe 

 convolutis, umbilicum l&vem lacco-purpureum formantibus, an- 

 gulatis, squamis minutis, in seriebus parallelis dispositis, tota- 

 liter tectis ; angulo serie unicd majorefuniculato ; spird depresso- 

 pland. 

 Icones Reeve, Conch. Syst, vol. ii. pi. 211. f. 6. 

 Long. 2J ; lat. if. Mus. Cuming, &c. 

 Hab. Ad oras Novse Hollandise. 



This is the first discovered large species of Delphinula that is abso- 

 lutely destitute of spines or nodules. The surface of the shell, which 

 is entirely covered with small scales ranged in parallel series, is of 

 clear silvery white ; the upper and lower portions of the whorls are 

 tinged with a rich Tyrian purple, and the umbilicus, which is smooth, 

 is of a lighter lake purple. 



Delphinula imperialis. Delph. testa subdiscoided spiniferd 

 et squameo-liratd, anfractibus olivaceo-viridibus, ultimo pal- 

 lide purpureo, laxe convolutis, umbilicum amplum formantibus, 

 subangulatis, angulo spinis gracillimis, squamceformibus, nigris, 

 superne inflexis, coronato ; anfractuum parte altera spinis bre- 

 vioribus, contrarie inflexis, in seriebus dispositis, interstitiis 

 squamis nigris, minutis sigillatim impositis, ornatis ; spird 

 depresso-concavd. 

 Delphinula melanacantha, Reeve, Conch. Syst., vol. ii. pi. 211. f. 4. 

 and pi. 212. f. 10. 



Long. 2£ ; lat. 1 j in. Mus. Cuming. 

 Hab. Adinsulam Mindanao, Philippinarum. 



A magnificent specimen of this remarkable shell was dredged up 

 by Mr. Cuming in fathoms' water at , one of the Philip- 

 pine Islands, and we need only refer to our figures of it in the ' Con- 

 chologia Systematica,' in addition to the above description, to show 

 how distinct is this species from any other of the genus. The shell 

 is of a palish-green colour towards the apex, but the last whorl is 

 purple and elegantly surmounted with a row of tall, black, slender, 

 scale-like spines, bending over towards the point of the spire. Be- 

 low these are five other distinct rows of black spines ; they are, 

 Ann. §• Mag. N. Hist. Vol. xi. Suppl. 2 M 



