32 Bulletin, Vanderhilt Marine Museum, Vol. II 



Cancer (Mantis) arenarius Herbst, Nat. Krabben u. Krebse, vol. 2, 

 p. 96, pi. 33, fig. 2, 1796. 



Lysiosquilla maculata Miers, Proc. Zool. Soc. London, 1877, p. 138; 

 Philosoph. Trans. Royal Soc, vol. CLXVIII, p. 494, 1879 ; Ann. 

 Mag. Nat. Hist., series '6, vol. 6, 1880, p. 5. 



fSquilla glahriuscula Lamarck, op. cit. vol. V, p. 188, 1818. — ^La- 

 TREiLLE, op. cit. vol. X, p. 470, 1825. — H. Milne Edwards, op. 

 cit. vol. 2, p. 519. 



Squilla vittata H. Milne Edwards, op. cit. vol. 2, p. 519. — ^White, op. 

 cit. p. 83. — GiBBES, Proc. Amer. Assoc. Adv. Sci., 1850, p. 199. 



Lysiosquilla glahriuscula Miers, Ann. Mag. Nat. Hist., series 6, vol. 6, 

 p. 7, 1880. 



Genus : SQUILLA Fabricius. 

 SctuUla mantis Latreille. 



Plate 4. 



Type : Latreille states that according to Risso this species is found 

 in the deeper waters of the Mediterranean and according to Linnaeus 

 in the seas of the North (Europe). It is now generally accepted that 

 Linnaeus confused several species. 



Distribution : Mediterranean Sea and found less abundantly on the 

 Atlantic shores of the Hispanic peninsula and as far north as southern 

 England. 



Material examined; One specimen taken at Porto Padre, Cuba, 

 March, 1928, by the "Ara." 



Color : Never described. 



Technical description: This species is superficially quite similar 

 to 8. alba. The rostrum is longer than wide, shaped like that of alba, 

 but mantis has the median longitudinal carina broken posteriorly and 

 bifurcated, forming an elliptical contour which unites near the pos- 

 terior margin. There are two carinae on each side the median carina, 

 one of these is just below the lateral groove and is interrupted pos- 

 teriorly by a transverse sulcus ; the other lateral carina is about half- 

 way between the upper lateral carina and the extreme lateral margin, 

 which is also carinate. The third thoracic segment terminates its an- 

 terior margin on the ventral surface in an acute, downward pointed 



