. Bulletin. Science. 100 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 1. Himantolophus sagamius, SIO 02-2, 380 mm SL. Scale bar = 15 cm. side of the body (from the posterior part of the head to the caudal peduncle) and 44 on the right, with 3-4 spines on each pectoral peduncle. The esca (Fig. 2 A, B) has the light-guiding distal appendage (DA) divided at the base; each main branch has a bifurcated tip and two tiny papilliform side- branches; the base is surrounded by four escal lobes of about equal size, each with a slightly roundish tip; length of the DA is 24 mm ( SL). The unpaired ante
. Bulletin. Science. 100 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 1. Himantolophus sagamius, SIO 02-2, 380 mm SL. Scale bar = 15 cm. side of the body (from the posterior part of the head to the caudal peduncle) and 44 on the right, with 3-4 spines on each pectoral peduncle. The esca (Fig. 2 A, B) has the light-guiding distal appendage (DA) divided at the base; each main branch has a bifurcated tip and two tiny papilliform side- branches; the base is surrounded by four escal lobes of about equal size, each with a slightly roundish tip; length of the DA is 24 mm ( SL). The unpaired anterior escal appendage (AA) is simple with two short side-branches near the tip; its length is 91 mm ( SL). The unpaired posterior escal appendage (PA) is bifurcated; one branch is simple and the other branch has three short side- branches near the tip; its length is 147 mm ( SL). There are three pairs of illicial appendages (IA) near the base of the escal bulb; both distal appendages are bifurcated and both proximal appendages are simple; no side-branches are present on any pair; the length of the longest is 172 mm ( SL). All escal appendages and side-branches are black with bright silvery tips. The illicium and esca of H. sagamius has also been illustrated in Lea (1988) and Bertelsen and Krefft (1988). Himantolophus sagamius can be readily distinguished from the four other mem- bers of the groenlandicus-group. Himantolophus sagamius has an anterior escal appendage (AA), absent in both H. paucifilosus Bertelsen and Krefft 1998 and H. crinitus Bertelsen and Krefft 1988. It has longer distal appendages (DA) ( SL versus SL for specimens greater than 325 mm SL), and a longer posterior appendage (PA) ( SL versus 24-33% SL for specimens greater than 325 mm SL) than H. groenlandicus Reinhardt 1837. Himantolophus sagam- ius has bright silvery tips on all escal appendages and side-branches, with the escal lobes rounded, whereas H. danae has pigmented tips
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