Boone, Crustacea, Cruises of "Eagle" and "Ara," 1921-28 195 



Material examined : A single dredge-broken specimen, taken when 

 the dredge was down 400 fms., off St. Raphael, bearing S. S. B., dis- 

 tance 9 miles, in the Mediterranean Sea, south of France, March 23, 

 1927, by the "Ara," William K. Vanderbilt, commanding, establishes 

 what seems to be the first record of this interesting species from the 

 Mediterranean Sea. 



Color: Spectrum red with light markings of purplish-blue on the 

 tips of the legs and external maxillipeds. 



Technical description: The "Ara" specimen, which is too broken 

 to permit complete description, establishes the seventh record of this 

 species, which has been expertly diagnosed and figured by Dr. Hansen. 

 The following notes should prove of interest because this is apparently 

 the first record of the species from the Mediterranean Sea. 



Carapace with the frontal margin rounded on the dorsal surface, 

 eoncavely excavate on the lateral side above the eyestalk and then 

 produced to a narrowly rounded lobe at the anterolateral angle. The 

 integument of the carapace is soft and smooth, the postlateral lobes 

 are much produced and rounded, convex, overlapping the side of the 

 first abdominal segment. The cervical groove is well defined. The 

 abdomen is convex, smooth, tapering posteriorly, the first three seg- 

 ments are in line with the carapace ; the remainder of the abdomen is 

 bent downward. The first, second, third and fifth segments are of 

 about equal length; the fourth being very slightly longer than the 

 third segment ; the sixth segment is elongated, two and one-half times 

 the length of the fifth segment. The telson is seven-eighths as long 

 as the sixth segment and is quite narrow, tapering to an extremely 

 narrow, rounded point which is set distally with two articulated, 

 slender, setose spines. The proximal part of the telson has an elon- 

 gate, low, rounded lobe on each side, separated by the median longi- 

 tudinal groove or depression which extends the length of the telson 

 and is augmented through the distal four-fifths by a fine line of spin- 

 ules. The lateral margins of the telson are armed along the distal 

 three-fifths with a continuous row of spinules, some of which are longer 

 than others, all being very long. The uropoda are a trifle longer than 

 the telson; the peduncle is small, its outer distal angle lobed; the 

 inner blade is about one millimeter longer than the telson and is ex- 

 tremely narrow, tapering to a narrowly rounded apex; it has a 

 submedian keel and is fringed with long, plumose cilia. The outer 

 blade is about one millimeter longer than the inner and one and two- 

 thirds times as wide, with the distal angle broadly rounded ; the inner 



