. Outlines of zoology. Fig. 160.—Nebalia.—After Sars. SH., Shell; , first antenna; , second antennae; TH., 8 thoraciclimbs ; , , fourth and sixth abdominal Fig. 161.—Anaspides.—After Caiman. , , antennae; Ex., rudimentary exopodite; G., respiratory , , seventh and eighth thoracic limbs or pereiopods; ,2, 6, first, second, and sixth abdominal limbs or pleopods. 3o8 PHYLUM ARTHROPODA. Series II. Eumalacostraca. Division i. Syncarida, the order Anaspidacea, primitive fresh-waterforms, without a carapace; with the eight thoracic segments alldistinct {

---

. Outlines of zoology. Fig. 160.—Nebalia.—After Sars. SH., Shell; , first antenna; , second antennae; TH., 8 thoraciclimbs ; , , fourth and sixth abdominal Fig. 161.—Anaspides.—After Caiman. , , antennae; Ex., rudimentary exopodite; G., respiratory , , seventh and eighth thoracic limbs or pereiopods; ,2, 6, first, second, and sixth abdominal limbs or pleopods. 3o8 PHYLUM ARTHROPODA. Series II. Eumalacostraca. Division i. Syncarida, the order Anaspidacea, primitive fresh-waterforms, without a carapace; with the eight thoracic segments alldistinct {Anaspides), or with the first one fixed to the head (Koonunga);with stalked eyes in Anaspides, sessile eyes in Koonunga; withlamellar branchiae on the thoracic legs, whose slender exopodites arealso respiratory. Division 2. Peracarida, with a carapace that leaves at least four ofthe thoracic segments free, with the first thoracic segment always fusedto the head, with usually sessile eyes, with a brood-pouch on thethoracic appendages of the female, with an elongated heart, withdirect development. Numerous orders including:—the pelagic Mysi-dacea (formerly united wit

---

Size: 1770px × 1411px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1910, bookidcu3192, booksubjectzoology