. British beetles: an introduction to the study of our indigenous Coleoptera. Beetles. 24 BRITISH Fig. lacinia or blade; #, the palpifer; d^, the stipes or stalk, and d^, the cardo, base, hinge, or insertion, by which the lower jaw is attached to the inner side of the head. There are two small organs, the paraglossce, which in Dytiscus are soldered to the sides of the ligula : these are very conspicuous in many Cohoptera, and will be seen in Fig. 5 (the labium, or lower lip, of Pterostichus nitjer, a very common black ground- beetle), in which a is the Labium of Fterostichus niqer. ,
. British beetles: an introduction to the study of our indigenous Coleoptera. Beetles. 24 BRITISH Fig. lacinia or blade; #, the palpifer; d^, the stipes or stalk, and d^, the cardo, base, hinge, or insertion, by which the lower jaw is attached to the inner side of the head. There are two small organs, the paraglossce, which in Dytiscus are soldered to the sides of the ligula : these are very conspicuous in many Cohoptera, and will be seen in Fig. 5 (the labium, or lower lip, of Pterostichus nitjer, a very common black ground- beetle), in which a is the Labium of Fterostichus niqer. , 17^1 7-7 mentum, and 0 the ligula; c c are the paraglossse, and d the labial palpi. The next segment is the thorax, which is divided into three parts, the prothorax, mesothorax, and metathorax. The first of these, the prothorax, is considered to consist of two portions,—the upper side, called jjronohim, and the under side, or prosternum. The pronotum is that part to which the word thorax is exclusively applied in descrip- tions, and is much developed in the Coleoptera. In Fig. 6, a is the anterior, b the posterior, and c the lateral margin; d, the medial line (of which the front extremity is called the apex, .and the hinder the base); e e are the anterior, and / / the posterior angles, and g the disc. Both this and the following upper thoracic segment are considered each to be normally composed of four. 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 Rye, Edward Caldwell. London, L. Reeve & Co.
Size: 1639px × 1524px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booksubjectbeetles, bookyear1866
