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We have detected similar pits in the under side of the palpi of the Perla. It seems not improbable that these are organs of smell, and placed in that part of the appendage nearest the mouth, so as to enable the insect to select its proper food by its odor.
The labium is much as in that of Perla, being broad and short, with a distinct median suture, indicating its former separation in embryonic life into a pair of appendages. The labial palpi are three-jointed, the joints being broad, and in life directed backwards instead of forwards as in the higher insects. There are five American species of the genus Lepisma in the Museum of the Peabody Academy.
They are very variable in position, some being developed at the extremity of the abdomen, as in Agrion, or along the sides, as in the May flies, or filiform and arranged in tufts on the under side of the body, as in Perla; and the naturalist is not surprised to find them absent or present in accordance with the varying habits of the animal.
Consequently the Poduras did not have an independent origin and do not, perhaps, represent a distinct branch of the genealogical tree of articulates. They resemble in their general form the larva of Ephemerids, and perhaps more closely the immature Perla, and also the wingless cockroaches.
Thus Lespès, a Swiss anatomist, in his remarks on the auditory sacs, which he says are found in the antennæ of nearly all insects, declares that as we have in insects compound eyes, so we have compound ears. We might add that in the abdominal appendage of the cockroach we have a compound nose, while in the feelers of the Perla, and the caudal appendage of the Chrysopila, the "nose" is simple.
The Raphaels have been reduced to two at the Prado: The Holy Family with the Lamb, painted a year after the Ansedei Madonna, and that wonderful head of young Cardinal Bibbiena, keen-eyed and ascetic of features. Alas! for the scholarship that attributed to the Divine Youth La Perla; the Madonna of the Fish; Lo Spasimo, Christ Bearing the Cross, and several other masterpieces.
But as each of these vineyards yields a marked quality of wine, which is taken as standard-giving, the produce of the whole district may be broadly classified as approaching more or less nearly to one of these accepted types. The Inferno, Grumello, and Perla di Sassella of commerce are therefore three sorts of good Valtelline, ticketed with famous names to indicate certain differences of quality.
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