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4: 



38 



STALK-EYED CRUSTACEA, 



Family CYMOPOLIIDiE. 



CYMOPOLIA Koux. 



Crustaces de la Mediterranue, 5*^™*^ Livr., 1830. 



p-^ 



Cymopolia tuberculata i'Ax. 



Bull. Mus. Comp. ZooL, XXIV. 161, 1893. 



r 



Carapace very broad, subpcntagonal; branchial regions swollen, Front 

 four-toothed, the teeth blunt, separated from each other by narrow sinuses 

 which are rounded at the bottom ; the two middle teeth are longer than the 

 lateral ones, and the median sinus is deeper than the two lateral. The 

 antero-lateral margin of the carapace is four-toothed, counting the promi- 

 nent tooth at the external angle of the orbit; the posterior tooth of the 

 series is the smallest. The upper margin of the orbit has three deep fissures 

 definino- two triangular teeth; the lower margin of the orbit has two fissures 

 enclosinc^ a broad truncate tooth or lobe ; there is also a broad and promi- 

 nent lobe just below the inner orbital angle; above this lobe is a single 

 tooth at the inner angle. The surface of the carapace is ornamented with 

 granulated tubercles ; the parts between the tubercles are more finely granu- 

 lated, and when viewed under a lens are found to be furnished with fine 

 hairs. The chief tubercles arc disposed as follows : one pair on the frontal 

 region behind the margin ; four in transverse row on the anterior part of 

 the gastric area, and five on the posterior part of the same area arranged 

 thus, '■' (of these the posterior pair is the smallest); four in a transverse 

 line on the cardiac region and one median behind the transverse series; 



about six on each branchial area ; six just anterior to the straight posterior 

 margin of the carapace (three on each side). There are three small tubercles 

 on each eye-stalk near the margin of the cornea. The chelipeds are small, 

 slender, equal; the carpus tuberculate, the fingers as long as the hand 

 proper, curved downward and inward, crossing at the tips, their prehensile 

 edges finely denticulate in small specimens, nearly entire in larger ones. The 

 second and third ambulatory limbs are very long, the second slightly larger 

 than the third ; their merus joints are granulated and costate above, and 

 armed with a prominent spine at the anterior distal angle and a smaller one 

 each side at the point of articulation with the carpus; this holds good of 



