NO. 9 manning: Atlantic stomatopod Crustacea 25 



three thoracic and all abdominal somites; abdominal carinae spined 

 as follows: submedian, 5-6; intermediate, (1)2-6; lateral, 1-6; marginal, 

 1-5; telson with six strong posterior teeth, prelateral lobes well-defined; 

 denticles small, denticular formula (3)4-6(7-10), (12)13-16, 1; outer 

 submedian denticle the largest, rounded; margins of telson much swol- 

 len in adult male, swellings interrupted at teeth ; post-anal keel present ; 

 uropods with 6-8 graded, movable spines on outer margin of penultimate 

 segment of outer branch, the last not reaching midpoint of ultimate 

 segment. 



Discussion: This species is very closely related to S. intermedia, 

 differing from it in the following characters: the cornea is compara- 

 tively smaller; the ocular plates are rounded dorsally; on the median 

 carina of the carapace, the distance from the dorsal pit to the anterior 

 bifurcation is less than the distance from the bifurcation to the anterior 

 margin; the outer submedian denticle is larger than the others, and is 

 rounded. 



The type is a juvenile, and thus appeared to have but one large sub- 

 median denticle. 



Bigelow's description of S. intermedia in 1893 and 1894 was based 

 on two specimens, a male from the Gulf of Mexico and a female from 

 the Bahamas. The Bahama female (USNM 11543) is here selected as 

 the lectotype of S. intermedia. The Gulf of Mexico male described and 

 figured by Bigelow is actually S. edentata (Lunz, 1937). The name 

 intermedia could be applied to either species, as Bigelow had material 

 of both at the time of his description. However, since the name edentata 

 is available for the Gulf of Mexico and Caribbean species, it should be 

 applied to that species, and intermedia should be retained for the dis- 

 tinct form outside of the Caribbean. 



Remarks: S. edentata is found in somewhat shallower water than 

 S. intermedia, which has been taken as deep as 338 fms (lectotype, 

 USNM 11543). Also, S. edentata extends from the northern Gulf of 

 Mexico, through the Caribbean Sea, to French Guiana on the northern 

 coast of South America, while S. intermedia is known only from east 

 of Florida to north of Cuba (Manning, 1959) and from West Africa 

 (Ingle, 1960). 



The color of the material has completely faded. Unfortunately, the 

 color pattern of neither S. intermedia nor S. edentata has been de- 

 scribed. 



