. The Cambridge natural history. Zoology. CHAPTER VI CRUSTACEA {CONTINUHD) EUMALACOSTEACA {CONTINUED) : EUCARIDA EUPHAUSIACEA COMPOUND EYES DECAPODA DIVISION 4. EUCAEIDA. The carapace fuses with all the thoracic segments. The eyes are pedunculate. The mandible is without a lacinia mobilis. There are no oostegites, the eggs being attached to the endo- podites of the pleopods. The hepatic caeca are much ramified, the heart is abbreviated and saccular, the spermatozoa are spherical with radiating pseudopodia, and development is typically attended by a complicated larval metamorphosis. Order I. Eu
. The Cambridge natural history. Zoology. CHAPTER VI CRUSTACEA {CONTINUHD) EUMALACOSTEACA {CONTINUED) : EUCARIDA EUPHAUSIACEA COMPOUND EYES DECAPODA DIVISION 4. EUCAEIDA. The carapace fuses with all the thoracic segments. The eyes are pedunculate. The mandible is without a lacinia mobilis. There are no oostegites, the eggs being attached to the endo- podites of the pleopods. The hepatic caeca are much ramified, the heart is abbreviated and saccular, the spermatozoa are spherical with radiating pseudopodia, and development is typically attended by a complicated larval metamorphosis. Order I. Euphausiacea. The Euphausiidae ^ agree with the Decapoda in passing through a complicated larval metamorphosis. The young hatch out as ISTauplii, with uniramous first an- tennae and biram- ous second antennae and mandibles. In the next stage, or " Calyptopis " (Fig. 101), which corre- sponds exactly to the Zoaea of the Decapoda, two pairs of maxillae and a pair of hiramous inaxillipedes are added; the hinder thoracic segments are undifferentiated, but tlie abdomen is fully segmented, ' Sars, Reports, xiii., 1885 ; Chun, Bibliotheca Zoologica, xix., 1896, \i. 139. 144. Fig. 101.—Qn\y])to'^\sla,rYa, ai Euphausiapdlucida, x about 20. , 1st antenna; , 6tli abdominal segment; E, eye ; 3f, maxillipede. (After Sars.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. ed. [London, Macmillan and Co. , Limited; New York, The Macmillan Company
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