MINIATURE FLOTILLAS, ral nity. Shall I speak, for example, of the vetelles, which present the appearance of a small wherry with its bottom upwards, on the back of which rises a sort of crest, extremely thin, light, and transparent, which is a large sail, serving the animal to direct its movements, and to vary and increase its velocity. Always keeping close to the wind, this elegant azure boat advances in order, tacks with rapidity, and changes its course accord- ing to its pleasure or need, and rarely fails of at- taining the prey it pursues. The elegance of the form of this creature, the transparency of its sail, the beautiful mantle of blue with which it is clad, ali concur to render it one of the most pleasing of the species; indeed, nothing can afford a more charming picture than these animals, when, in calm weather, they manceuvre by thousands on the surface of the sea, resembling so many gay ininiature flotillas. “Tn the Beroes, nature seems to have exhausted herself to produce the utmost grace and brilliancy in the perfection of the figure, the richness of the hues, and the varicty of the movements. Their substance, more pellucid than the clearest crystal, is generally of a beautiful rose, opal, or azure colour, Their form is more or less spheroidic ; eight or ten longitudinal ribs are disposed around it, cach formed of a prodigious number of small