. Discovery reports. Discovery (Ship); Scientific expeditions. CIRRATULIDAE 157 Description. The average measurement is about 20 mm. by 2 mm. at the widest part: there are 80-90 chaetigers. The body is tapered at both ends, suddenly at the anterior end and gradually at the posterior. It is at its broadest from the loth to the 40th chaetiger. In spirit all pigment has disappeared. The prostomium (Fig. 61) is shorter and blunter than that figured for H. caput-esocis (Fauvel, loc. cit. fig. /). Instead of a pair of round eye spots, there is a row of small eye spots interrupted in the middle line
. Discovery reports. Discovery (Ship); Scientific expeditions. CIRRATULIDAE 157 Description. The average measurement is about 20 mm. by 2 mm. at the widest part: there are 80-90 chaetigers. The body is tapered at both ends, suddenly at the anterior end and gradually at the posterior. It is at its broadest from the loth to the 40th chaetiger. In spirit all pigment has disappeared. The prostomium (Fig. 61) is shorter and blunter than that figured for H. caput-esocis (Fauvel, loc. cit. fig. /). Instead of a pair of round eye spots, there is a row of small eye spots interrupted in the middle line as in Cirrotiihis cirratiis. Fig. 61. Heterocirrus capitt-csocis, var. capemis. Anterior end. The buccal and the following achaetous segments are not clearly distinguished. Just in front of the ist chaetiger is a pair of long coiled palps, and a little behind and below these a pair of gills. Most of the gills are lost, and I can find none behind the 15th chaetiger; further back they are either absent or broken ofi". There are dorsal and ventral capillary bristles in all the feet, and from about the 15th neuropodium and 20th notopodium there are also simple unidentate hooks. I can see no ventral folds round the anus. Remarks. This form is close to H. capiit-esocis, but differs from it in the shape of the head and eyes, and in the presence of notopodial hooks behind the 20th chaetiger instead of in the terminal feet only. Genus Tharj^, Webster and Benedict Tharyx epitoca, St. 181. 12. iii. 27. SchoUaert Channel, Palmer Archipelago. 64° 20' 00" S, 63° 01' 00" W. 160-335 m. Gear OTL. Bottom: mud. One specimen. Gear N 4-T. One specimen. St. 190. 24. iii. 27. Bismarck Strait, Palmer Archipelago. 64° 56'00" S, 65° 35'00" W. 93-126 m. Gear DLH. Bottom: stones, mud and rock. One specimen. Description. Two epitocous females, swollen with eggs. The largest measures 27 mm. by 3 mm. at the widest part, for about 50 chaetigers. The body is fusiform,.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscientificexpedition
