Macrocoeloma laevigatum (Stimpson, 1860)

(Figure 5F)

Material examined. Petro-UFS—4 (1 M); CW: 11.48 mm; CZUFS CRU- 00105. Penaeid—1 M; CW: 2.3 mm; CZUFS CRU- 00319.

Station. Petro-UFS—4, 5, and 18; Penaeid—3.

Distribution. Western Atlantic—Florida (USA), West Indies to Brazil (from Pará to Sergipe) (Barreto et al. 1993; Melo 1996; Serejo et al. 2006; Almeida et al. 2007 a; Barros-Alves et al. 2015).

Ecological notes. From shallow waters to a depth of 30 m. On sandy and rocky substrates and algae bottoms (Melo 1996).

Remarks. According to the classification of Ng et al. (2008) this species belonged to the subfamily Mithracinae, which was raised recently to family Mithracidae (Windsor & Felder 2014) . However, some genera, including Macrocoeloma Miers, were removed from Mithracidae based on molecular phylogenetics (12S, 16S and COI mitochondrial genes) and a morphological re-examination. This genus is now considered an incertae sedis group, closely related to other Epialtidae (Windsor & Felder 2014) . As the position of M. laevigatum is not well defined, we decided to follow the classification of Ng et al. (2008) and retained it in the family Majidae .

Previous records in Sergipe. Barros-Alves et al. (2015).