. Elementary text-book of zoology. Zoology. NEUROPTERA. 563 jointed, filiform or setiform, the eyes of medium size, and the live-jointed. The prothorax is always freely moveable, and the abdo- men is composed of eight or nine segments. The nervous system is similar to that of the Orthoptera, and consists of clearly distinct thoracic and abdominal ganglia. There is always a muscular gizzard on the digestive canal (Myrmeleontidce, Panorpidce). A sucking stomach is found only in the Henierobidw. Six to eight long Mal- pighian tubes arise from the hindgut. The metamorphosis is always •complete. Th
. Elementary text-book of zoology. Zoology. NEUROPTERA. 563 jointed, filiform or setiform, the eyes of medium size, and the live-jointed. The prothorax is always freely moveable, and the abdo- men is composed of eight or nine segments. The nervous system is similar to that of the Orthoptera, and consists of clearly distinct thoracic and abdominal ganglia. There is always a muscular gizzard on the digestive canal (Myrmeleontidce, Panorpidce). A sucking stomach is found only in the Henierobidw. Six to eight long Mal- pighian tubes arise from the hindgut. The metamorphosis is always •complete. The larva* prey on other animals, and are provided with biting or sucking forceps (formed from the mandibles and maxilla'). They pass into a quiescent pupal stage, in which the parts of the winged insect can al- ready be made out. The pupa is often surrounded with a •cocoon, but possesses the power of locomotion to a certain de- gree, since before the animal passes out of the pupal stage it ceases to be quiescent and seeks out a place suitable for development. Fossil remains are found in tertiary forma- tions and in amber. Sub-order 1. Planipennia. Front and hind wings similar, never capable of being folded. The mouth parts are powerful and adapted for mastication. Fam. Sialidae. With large head bent obliquely forwards, and pro- jecting hemispherical facetted eyes. The wings, when at rest, overlap one another like the slates on a roof. The larvee have biting mouth-parts, with four-jointed maxillary palps and three-jointed labial palps. Sialix lutfirin L., Curi/rfalis en r nut a lia/ihiilti/ (>j>hiiij>x/x Schum. camel-neck flies. Fam. Panorpida? (Sclmabelflicgen). The head is small and placed vertically : the multiarticulate antennas are placed in the frontal region beneath the ocelli. The oral region is prolonged in the form of a beak. The wings are long and narrow, and similar to each other. The larvaj are like caterpillars. They have thirteen segments and a hea
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1884
