NO. 9 manning: Atlantic stomatopod Crustacea 43 



tooth; one dorsally on the larger intermediate denticle; and one to 

 three on each accessory carina. There are 11-12 movable submedian 

 denticles, and two intermediate ones, the inner the larger, both spine- 

 tipped. 



Discussion : The rostral plate and ocular plates are identical to those 

 found in G. oerstedii, which differs from G. spinulosus in the smooth 

 dorsal surface of the telson and in lacking the characteristic black mark- 

 ings on the sixth thoracic and first abdominal somites. 



G. spinulosus is the Atlantic analogue of G. festae Nobili from the 

 Eastern Pacific (see Schmitt, 1940). G. spinulosus differs from G. 

 festae and the other eastern Pacific species with spinulose telsons in 

 that the anterolateral angles of the rostral plate are rounded ; in the 

 eastern Pacific species, the angles of the rostral plate are acute and even 

 spiniform, as in G. bahiahondensis Schmitt. 



Bigelow (1931) felt that the following characters, in addition to the 

 dorsal spinules on the telson, separated G. spinulosus from G. oerstedii: 

 the median spine of the rostral plate does not reach the cornea, and the 

 anterior margins of the rostral plate are transverse ; the uropodal outer 

 branch is longer than the basal prolongation ; and at least two of the 

 mobile spines on the penultimate segment of the uropodal outer branch 

 are recurved. These characters are, however, variable, and are not diag- 

 nostic, as they can be found in G. oerstedii as well as G. spinulosus. The 

 only apparent differences between the two species are the presence in 

 the latter of dorsal spinules on the telson and the dark-pigmented areas 

 on the sixth thoracic and first abdominal somites. 



Remarks: The color of this species is the same as in G. oerstedii, 

 except for the two dark areas on the sixth thoracic and first abdominal 

 somites aptly described by Schmitt (1924a) as "Chinese ideographs." 



Gonodactylus oerstedii Hansen, 1895 

 Plate 11, figs. 5-6. 



Restricted synonymy : 

 Gonodactylus oerstedii Hansen, 1895, p. 65, footnote; Schmitt, 1940, 

 p. 211, figs. 26-29; Holthuis, 1941, p. 38; Lemos de Castro, 1955, 

 p. 42, text-figs. 30-31, pis. XH, f^g. 44, and XVHI, fig. 56; Man- 

 ning, 1959, p. 16. 

 Previous records : 

 North Carolina to Brazil, including Bermuda and the Bahamas; eastern 



