Rhynchozoon rostratum : Bastos et al ., 2018 Bryozoan framework composition in the oddly shaped reefs from Abrolhos Bank, Brazil, southwestern Atlantic: taxonomy and ecology Ramalho, Laís V. Taylor, Paul D. Moraes, Fernando Coreixas Moura, Rodrigo Amado-Filho, Gilberto M. Bastos, Alex C. Zootaxa 2018 2018-09-20 4483 1 155 186 6WW3M (Busk, 1856) Busk 1856 [151,655,1589,1615] Gymnolaemata Phidoloporidae Rhynchozoon GBIF Animalia Cheilostomatida 22 177 Bryozoa species rostratum    Rhynchozoonsp.: Reis et al., 2016: supplementary table.    Rhynchozoon rostratum: Bastos et al., 2018: table 1.     Materialexamined. Abrolhos Bank, BahiaState, Brazil: MNRJ-Bry1338, Parcel dos Abrolhos,  15 mdepth,  February 2014, col. R. Moura, G. Amado-Filho & A.  Bastos; MNRJ-Bry1374, Parcel dos Abrolhos,  4 mdepth,  February 2014, col. R. Moura, G. Amado-Filho & A. Bastos.  Short description.Colonies encrusting, multilamellar; zooids initially orderly but becoming irregularly arranged. Frontal wall tuberculate with areolar pores only ( Fig. 6D). Primary orifice with distinct rounded sinus, hidden by the development of the peristome; tubercles sometimes present, varying in number and size ( Fig. 6D, E). Oral and frontal avicularia of similar shape and size, crossbar complete, the frontal avicularium triangular, diamond-shaped and distolaterally or laterally directed ( Fig. 6E); oral avicularium single ( Fig. 6F) directed laterally. Ovicells not observed.   Geographic distribution. Indonesia, E. Pacific, Caribbean and Gulf of Mexico ( Busk 1856; Winston & Heimberg 1986); Abrolhos Bank, Bahia State ( Reis et al. 2016; Bastos et al. 2018; present study).   Remarks.  Rhynchozoon verruculatum( Smitt, 1873)is very similar to  R. rostratum, but it differs from the latter in having larger zooids, a shallow U-shaped sinus, more elongated diamond-shaped frontal avicularia, and ovicells that are completely immersed.  Rhynchozoon brasiliensis Almeida et al., 2017, also known from BahiaState, has a primary orifice with a V-shaped sinus, the peristomial avicularium is absent, and the frontal avicularium is variously oriented. Two other Brazilian  Rhynchozoonspecies are distinct:  R. coalitum Vieira et al., 2010has only a suboral avicularium and lacks vicarious avicularia, while  R. phrynoglossum Marcus, 1937has large vicarious avicularia with truncate or tongue-shaped mandibles. The colonies found in the studied cores were poorly preserved, making a more precise identification difficult. 1913860743 2014-02 Parcel dos Abrolhos & R. Moura Brazil 15 Material Abrolhos Bank 22 177 1 Bahia 1913860732 2014-02 Parcel dos Abrolhos & R. Moura Brazil 4 Bastos 22 177 1 Bahia