. The Annals and magazine of natural history; zoology, botany, and geology. proved to be two females of an interesting andhitherto undescribed form. EULINOGNATHUS, gen. nov. Head longer than broad, anteniise arising just in front ofhalfway, broader behind the antennae than in front. Noprojecting postero-lateral angles. Behind, the head is sunkdeep into the thorax. Around the mouth in front a circlet oftriangular denticles. Abdomen without tergites or pairs of pleurites, the anterior pair well pair of legs small. Hairs on the abdomen modified,being long, flattened
. The Annals and magazine of natural history; zoology, botany, and geology. proved to be two females of an interesting andhitherto undescribed form. EULINOGNATHUS, gen. nov. Head longer than broad, anteniise arising just in front ofhalfway, broader behind the antennae than in front. Noprojecting postero-lateral angles. Behind, the head is sunkdeep into the thorax. Around the mouth in front a circlet oftriangular denticles. Abdomen without tergites or pairs of pleurites, the anterior pair well pair of legs small. Hairs on the abdomen modified,being long, flattened, parallel-sided, truncate at the tip. On Pedetes capensis, now known as Pedetes cofer, Pall,(family Pedetidse). Eulinognathus denticulatus, sp. n. External Form. Female.—Head: the outline is well shownin the figure (text-fig. 1). The characteristic features of thehead are the circlet of denticles around the mouth, theabsence of postero-lateral angles and also of any neck ornarrowing of the head just before entering, the thorax, so that neic Species of Lice. 91 Fig. -Gon — h EuUnognathtis denticulatus, sp. n., $. Gow = Gonopod. a. Preanteniial part of the head, greatly enlarged. 00=Oral opening; 0C= Oral cone ; P^ = Peristomial band,h. Hair (enlargedj. 92 Mr. B. F. Cummings on the swollen base of the head is held in a stiff collar formed by the thorax, and apparently, therefore, incapable ofmuch lateral motion. The median areas of both dorsal andventral surfaces are composed of rather thin, smooth chitin,but both behind and in front of the antennae the head on eachside is strengthened by chitinous areas of greater the antenna this thickened area on the dorsal surfacebegins as a more or less circular, raised or embossed patchbearing a long bristle and a minute hair. This patch extendsdown on each side to the ventral surface, where it occupiesthe margin and runs forward past the antenna to join theperistomial band. This band is a strong circular support,f
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Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
