. Bulletin - United States National Museum. Science. COPEPODS OF THE WOODS HOLE BEGION 41 Remarks.—In specimens obtained with a townet the large plumes on the caudal rami are always damaged and often entirely broken away. But even in this condition the copepod can be recognized by the peculiar position of the rami, and by the long bristles on the first antennae. It is a tropical species and was taken in considerable numbers by the present author at Montego Bay, Jamaica, in the summer of 1910. CALOCALANUS PLUMULOSUS (Glaus) FlGtTBB 23 Calanus plumulosus Claus, Die frei lebenden Copepoden, p. 17
. Bulletin - United States National Museum. Science. COPEPODS OF THE WOODS HOLE BEGION 41 Remarks.—In specimens obtained with a townet the large plumes on the caudal rami are always damaged and often entirely broken away. But even in this condition the copepod can be recognized by the peculiar position of the rami, and by the long bristles on the first antennae. It is a tropical species and was taken in considerable numbers by the present author at Montego Bay, Jamaica, in the summer of 1910. CALOCALANUS PLUMULOSUS (Glaus) FlGtTBB 23 Calanus plumulosus Claus, Die frei lebenden Copepoden, p. 174, pi. 26, figs. 15, 16, 1863. Calocalanus plumulosus Giesbeecht and Schmeil, Das Tierreich, Lief. 6, Cope- poda, p. 26, 1898. Occurrence.—Sexersil females were taken by Wheeler at the sur- face in the Gulf Stream south of Marthas Vineyard. Distribution.—M e s s i n a (Claus); Mediterranean, tropical Atlantic and Pacific (Giesbrecht) ; Gulf Stream (Wheeler); Adriatic (Graeffe, Pesta). Color.—Female transparent, with orange and red pig- ment scattered irregularly through the body, especially in the head, the fourth and fifth thoracic segments, and the genital segment, and along the sides of the thorax and abdomen. The two large plumes on the basal seg- ments of the first antennae are dark brownish orange; the plumes on the caudal rami, including the enor- mously elongated one on the left ramus, are light red- dish orange. Female.—Segmentation indistinct; genital segment cuboidal; the left caudal ramus with an extra inner plume twice the width and five times the length of the entire body. Terminal endopod segment of third legs with two groups, of fourth legs with one group of spines; fifth legs much longer than in the preceding species, each 4-segmented, end segment tipped with a single long plumose seta and three spines, both margins and the inner mar- gin of the preceding segment heavily fringed with long hairs. Total length, mm. Male.—Unknown. Remarks.—I
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