Annual report of the Commissioners of Inland Fisheries made to the General Assembly . 48. 49 34. Plates XXVI and XXVII. The First-Stage Lobster. The first-stage larva at the age of three days has a length of about 8 mm. Theaccompanying figure shows the larva in the normal swimming position with theabdomen bent at an angle of about forty-five degrees from the plane of the cep-halo-thorax, which is in turn bent about forty-five degrees from the eyes are large and prominent. The thoracic appendages bear the swimmingattachments, the exopodites, by whose rapid vibratory stroke
Annual report of the Commissioners of Inland Fisheries made to the General Assembly . 48. 49 34. Plates XXVI and XXVII. The First-Stage Lobster. The first-stage larva at the age of three days has a length of about 8 mm. Theaccompanying figure shows the larva in the normal swimming position with theabdomen bent at an angle of about forty-five degrees from the plane of the cep-halo-thorax, which is in turn bent about forty-five degrees from the eyes are large and prominent. The thoracic appendages bear the swimmingattachments, the exopodites, by whose rapid vibratory strokes the larva is keptup in the water, and by whose , backward or forward, the movement of thelobster is accomplished. The abdominal appendages have not yet appeared,though they often may be seen as buds beneath the cuticle on the under side ofthe abdomen. The tail or telson has the shape of a simple fan, whose posteriormargin is bordered by short spine-like setse. Plates XXVIII and XXIX. Second-Stage Lobster. The appearance of the larva in this stage is similar to that of the fir
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Keywords: ., bookauthorrhodeisl, bookcentury1900, bookdecade1910, bookyear1910
