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 . Fig. 41. Front view of the head of a bee, Anthcphora. a, coiniiound eyes; c,three simple eyes, situated upon the epicraninm; b, ; e, lahrum; il, un-tenna^;/, mandibles: i, maxilla;; h, palpi; /, palpUcr; /, laliial jialpi: m,paraglossa; i, ligula.—From * 30 THE CLASS OF (These lobes will be explained farther on when speakingof their development in the embryo.) Behind the epicra- nium is the occiput,or base of t
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 . Fig. 41. Front view of the head of a bee, Anthcphora. a, coiniiound eyes; c,three simple eyes, situated upon the epicraninm; b, ; e, lahrum; il, un-tenna^;/, mandibles: i, maxilla;; h, palpi; /, palpUcr; /, laliial jialpi: m,paraglossa; i, ligula.—From * 30 THE CLASS OF (These lobes will be explained farther on when speakingof their development in the embryo.) Behind the epicra- nium is the occiput,or base of the belongs to the la-bial, or second max-illarj segment, andhelps to form a com-plete ring, articulat-ing with the is perforated by aforamen to afford aconnection betweenthe interior of thehead and thorax. Itis sometimes, as inmany Coleoptera, Or-thoptera, and Ilemip-tera, elongated be-^S- 42- hind and constricted, thus forming a neck. It will be seen beyond, that thelabrum and clypeus are in the embryo developed from atongue-like process whose inferior part eventually becomesthe labrum, while superiorly it sends a triangular process (therudnnent of the clypeus) into the interval between the proce-phalic lobes.* This part { the clypeus and labrum) is themost anterior part of the head, and in the embryo, as in theadult, is normally situated in front of the ocelli, but is not tobe compared with the anal plate, or eleventh te
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectinsects
