. A text-book of agricultural zoology. Zoology, Economic. 102 AEACHNOIDEA. is no true metamorphosis; but growth takes place by a series of ecdyses, the young resembling the adult in general form. The ova develop rapidly. The three divisions are characterised as follows :— i. Araneida or Spiders (fig. 39, a) have the head and thorax united into one piece, the cephalothorax(o), the abdomen (a) being distinct. Eyes are represented by clusters of ocelli (fig. 39, b, /).. Pia. 89. —House Spidee. A, Male of House Spider {Tegem^jjria, civil/Is} enlarged : c, cephalothorax; p, maxillary palpi; a, abdo
. A text-book of agricultural zoology. Zoology, Economic. 102 AEACHNOIDEA. is no true metamorphosis; but growth takes place by a series of ecdyses, the young resembling the adult in general form. The ova develop rapidly. The three divisions are characterised as follows :— i. Araneida or Spiders (fig. 39, a) have the head and thorax united into one piece, the cephalothorax(o), the abdomen (a) being distinct. Eyes are represented by clusters of ocelli (fig. 39, b, /).. Pia. 89. —House Spidee. A, Male of House Spider {Tegem^jjria, civil/Is} enlarged : c, cephalothorax; p, maxillary palpi; a, abdomen, b, front of head: /, ocelli; 91, mandibles, c, under side of head: TO, true jaws; I, lower lip. D, diagram of one of the air chambers. (After Blaokwall, from Nicholson.) ii. Scorpionidoe have the anterior palpi elongated like legs, and provided with nippers like the claws of a crab. The ab- domen may have the last six segments elongated and formed into a spurious Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Theobald, Frederick Vincent, 1868-1930. Edinburgh and London, W. Blackwood and sons
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1899
