Full size image Holotype ov. Female 2. Storia nat. Diagnosis Antennae reaching one-third of body length. P 6, 7 basis oval, regularly rounded, posterior margin not much widened. Telson spinose. Description 2β2. Mouthparts: Mx 1 palp with 2 arts, inner plate small; Mx 2 plates in tandem position, inner plate much shorter than outer one. Md body long and slender, molar absent. Cx 2 oval, three times as long as Cx 1. Gn 2 basis with spines on anterior margin; merus not reaching end of triangular carpus, both arts with spines on posterior margin; propodus twice as wide but scarcely longer than Gn 1 propodus, regularly rounded, palm defined by a group of strong spines.
Peraeopods: Cx 3 rectangular; P 3 much smaller than P 4; merus P 3 somewhat thicker than propodus and carpus and anteriorly somewhat lengthened; basis on anterior margin spinose. Cx 4 triangular, longer than Cx 3 and about double width; P 4 basis and merus about same width, merus longer than P 3 merus. Dactyli P 3, P 4 reaching about half length of propodus.
P 5 very similar P 3. P 6, 7 similar to each other; basis hind margin regularly rounded, posterodistal corner lengthened; merus scarcely widened, but clearly posterodistally acutely lengthened, reaching half length of carpus. Telson triangular, laminar, with spines. No sexual dimorphism known as yet. Etymology After the sea anemone Boloceropsis platei Mc Murrich, , on which this species is living.
Used as noun in apposition. The species S. The material of S. It lacks also sexual dimorphism, the antennae are subequal and about one-third length of the body, the eyes are well developed and round, Gn 2 propodus is widened and the hind margin rounded, and bases of P 6, 7 are widened but posteriorly not much rounded.
But the differences are Gn 1 propodus similar in shape to Gn 2 propodus with well-defined palmar corner in S. It could well be that this species lives in similar conditions as Stenothoe brevicornis G. Sars, , which is well known from the Atlantic as obligate associate of the sea anemone Actinostola callosa Verrill, Vader and Krapp-Schickel, Also no sexual dimorphism is observed, the antennae are subequal in length and about one-third of the body length, the eyes are well developed and round, also P 6, 7 bases are similarly moderately widened with not much rounded hind margins.
