. The cave fauna of North America, with remarks on the anatomy of the brain and origin of the blind species. Cave animals; Caves. --''')^ ^iji Fig. 19.—Cells of Fig. 20.—Adelops Mrtus: a, head of larva from above-, 6, antenna; c, underside of head, with labrum and left maxilla; enlarged (after Hubbard). long, sides slightly rounded, truncate in front, sparsely covered with fine hairs. No ocelli. Antennae arising from the convex sides of the head, just before the middle, directed backwards; of four joints; the first tuberculous; the second elongate-cylindrical, slightly enlarged
. The cave fauna of North America, with remarks on the anatomy of the brain and origin of the blind species. Cave animals; Caves. --''')^ ^iji Fig. 19.—Cells of Fig. 20.—Adelops Mrtus: a, head of larva from above-, 6, antenna; c, underside of head, with labrum and left maxilla; enlarged (after Hubbard). long, sides slightly rounded, truncate in front, sparsely covered with fine hairs. No ocelli. Antennae arising from the convex sides of the head, just before the middle, directed backwards; of four joints; the first tuberculous; the second elongate-cylindrical, slightly enlarged anteriorly; the third twice as long as the second, slightly curved, thickened on the inner (anterior) side, sparsely covered with bristles, a longer bristle on the inside at the thickest portion, a stout spine on the inside at apex; fourth joint appendiculate, bearing and a short spine at tip. Epistoma prominent trapezoidal, strongly angulate, edges straight. Labrum movable, deflexed, transverse, oval, bearing spines above and below. Mandibles stout, lobed at base, with molar surface striate, moderately curved, bidentate at tips, overlapping when closed. Maxillae large, prominent, passing the mandibles, protuberant and strongly angulate at base, consisting of elongate cardinal and basal pieces, and a pyramidal palpiger, obscurely sepa- rated into two lobes by a longitudinal furrow, the upper lobe bearing internally four or five spines, the lower lobe terminating in a curved, ciliated crest; maxillary palpus, arising from the base of the palpiger, of two stout basal and one slender, spiniform, terminal joints. Labium with a large rounded men turn, broader .than long, slightly nar- rowed behind, bearing long hairs; labial palpi, widely separated by the base of the ligula, of two joints and a palpig- erous piece resembling a third joint. Ligula very large, prominent, elongate, with a square lobe in front, nearly reaching the tips of the palpi. Thoracic segmen
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Keywords: ., bookauthorpackarda, bookcentury1800, bookdecade1880, bookyear1888
