. Bulletin - United States National Museum. Science. 366 BULLETIN 15 8, UNITED STATES NATIONAL MUSEUM and transversely elongate. Along the frontal and lateral margins of the head and the sides of the thoracic segments are bright red dots, sometimes arranged in rows parallel with the margins, some- times scattered about irregularly. Similar dots run down the median line of the genital segment and abdomen, and there is a single transverse row across the anal segment. Along each side of the digestive canal in the metasome is a yellow longitudinal band, which becomes red in the genital segment and
. Bulletin - United States National Museum. Science. 366 BULLETIN 15 8, UNITED STATES NATIONAL MUSEUM and transversely elongate. Along the frontal and lateral margins of the head and the sides of the thoracic segments are bright red dots, sometimes arranged in rows parallel with the margins, some- times scattered about irregularly. Similar dots run down the median line of the genital segment and abdomen, and there is a single transverse row across the anal segment. Along each side of the digestive canal in the metasome is a yellow longitudinal band, which becomes red in the genital segment and abdomen. The pigment of the retina and optic nerve is dark bluish green, almost black; the appendages are bluish gray like the body; the ovisacs are deep blue (Rathbun). Female.—Head two-fifths wider than long, projecting slightly at the posterior corners; second segment wider than the first, with rounded corners; third segment abruptly narrowed to three-fourths the width of the second segment; fifth segment half the width of the fourth. Caudal rami obovate, inclined toward the midline, with a minute aculeate spine on the inner margin near the tip. Fourth segment of second antenna twice as long as third, the two to- gether the same length as the second segment. Fourth endopod with two unequal apical spines. Total length, mm. Male.—Total length of body to greatest width as 5:3; corneal lenses just visible in dorsal view; second metasome segment nar- rower than first; third segment not abruptly narrowed. End segment of second endopod with a large lanceolate flanged spine on the outer margin, three toothed apical spines, a curved claw at the inner distal corner, three inner setae, and three short spines around the apex. Total length, mm. Remarks.—This species is also a straggler from the Tropics in the Gulf Stream and was taken in company with the same Salpa as the preceding species. SAPPHIRINA PYROSOMATIS Giesbrecht Figure 223 Sapphirina pyrosomatis Gie
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