Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists . terns of Nitzsch theantennae are filiform, five-jointed, andthe labial palpi are wanting. Nir-mus is an allied genus ; both live onbirds. N. thoracicus Pack. (PL 9,fig. 5) lives on the Snow Bunting. TricJiodwtcH cauls DeGeer lives onthe dog, and has three-jointed an-tennae. The females have two mov-able hooks on the penultimate ring of Fig. 500. the abdomen. T. suorostratus is a parasite of the cat. T. capne Pack., lives on the goat. TheSaddle-ba
Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists . terns of Nitzsch theantennae are filiform, five-jointed, andthe labial palpi are wanting. Nir-mus is an allied genus ; both live onbirds. N. thoracicus Pack. (PL 9,fig. 5) lives on the Snow Bunting. TricJiodwtcH cauls DeGeer lives onthe dog, and has three-jointed an-tennae. The females have two mov-able hooks on the penultimate ring of Fig. 500. the abdomen. T. suorostratus is a parasite of the cat. T. capne Pack., lives on the goat. TheSaddle-back Gull is inhabited by Colpocephalum lari Pack. (PL9, fig. 1). Gyropus has no labial palpi. Schrank isa third of an inch long and lives on the Porpoise. Mr. has found G. ovalis on the Guinea pig in this country. * EXPLANATION OF PLATE 9. — Fig. 1, folpocephalum, lari Pack.; la, antenna;Fig. 2, Lipeurus corriViH-Ti.; Za, antenna; Fig. 3, Docophot-us buteonis Pack.; 3«,antenna; Tig. 4, Lipeurus elongates Pack., 4a, antenna1; Fig. 5, Nirmus thoracicusPack.; Fig. (!, Lipeurus gracilis Pack.; Fig. 7, Docophorus hamatus OKTHOPTERA. 0 R T II O r T E K A . THIS suborder may be briefly characterized as having freebiting mouth-parts, with highly developed organs of nutritionand digestion. The lirst pair of wings are somewhat thickenedto protect the broad net-veined hinder pair, which fold up likea fan upon the abdomen, and the hind legs are large andadapted for leaping. • The transformations are less completethan in the previous groups, the larva; and pupa- being bothactive and closely resembling the imago. All the species areterrestrial, the more typical forms having remarkable powersof flight, besides leaping powerfully. The grasshopper is the type of the group, the other families1 tearing more or less resemblance to the allied suborders,especially the Neuroptera. The head is very large, and muchmore bulky than in the Coleoptera or Hemiptera, the mouth-
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Keywords: ., bookcentury1800, bookdecade1870, bookpublishe, booksubjectinsects
