. The Cambridge natural history. Zoology. 420 CTENOPHOKA 5. Eucharidae. Euchm-is. 6. Mnemiidae. Mnemia, Mnemiopsis. 7. Oalymmidae. Calymma. 8. Ocyroidae. Ocyroe. Most of these Ctenophores occur in the warm and tropical seas; but Bolina is found occasionally at Plymouth in the month of May, on the west coast of Ireland, and at other stations on the British coasts. JEucharis is regarded as one of the most beautiful of the Phylum. A swarm, some miles in length, of large speci- mens of E. multicornis was met by the Plankton Expedition in the south equatorial current of the Atlantic during the mont
. The Cambridge natural history. Zoology. 420 CTENOPHOKA 5. Eucharidae. Euchm-is. 6. Mnemiidae. Mnemia, Mnemiopsis. 7. Oalymmidae. Calymma. 8. Ocyroidae. Ocyroe. Most of these Ctenophores occur in the warm and tropical seas; but Bolina is found occasionally at Plymouth in the month of May, on the west coast of Ireland, and at other stations on the British coasts. JEucharis is regarded as one of the most beautiful of the Phylum. A swarm, some miles in length, of large speci- mens of E. multicornis was met by the Plankton Expedition in the south equatorial current of the Atlantic during the month of September. Order III. Cestoidea. In this order the body is so much compressed in the trans- verse plane and elongated in the sagittal plane that it assumes the shape of a long narrow band or ribbon. The tentacular sheaths are present but the tentacles are degenerate in the adult. The tentacular functions are performed by numerous tentilla situated in long grooves extending along the whole length of the oral side of the band-like body. The transverse ribs are reduced; the sagittal ribs extend along the whole of the aboral side. Fam. Oestidae.—This is the only family of the order. Cestus veneris, the Venus's girdle of the Mediterranean Sea, is also found in the Atlantic Ocean, and specimens belonging to the. Fig. 182.—Cestus pectenalis. ^i, aboral sense-organ ; 0. 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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