Mr. E. J. Miers on the Squillida3. 7 



males, are very short, and toward the base are reduced to little 

 more than small serratures or teeth (see fig. 2). 



Lysiosquilla glabriuscula. 



? Squilla glabriuscula, Lam. Hist. Aniru. sans Vert. v. p. 188 (1818) ; 



Latreille, Eucycl. Meth. Hist. Nat. x. p. 470 (1825); M.-Edw. Hist. 



Nat. Crust, ii. p. 519 (1837). 

 Squilla vittata, M.-Edw. Hist. Nat. Crust, ii. p. 519 (1837) ; White, 



List Crust. Brit. Mus. p. 83 (1847) ; Gibbes, Proc. Aruer. Assoc. 



p. 199 (1850). 



The principal distinction between this species and Lysio- 

 squilla maculata consists in the smaller number of the spinules 

 with which the terminal joint of the large raptorial limbs is 

 armed. In L. maculata these are, as has been stated, nine or 

 ten in number ; in L. glabriuscula there are only from five to 

 seven. 



Hob. West Indies. 



Two specimens, both of them males, are in the British 

 Museum from the West Indies, St. Vincent {Rev. Lans- 

 dow ne Git tiding) . 



Slight as the character separating this species from its 

 Indo-Pacific congener may appear, it is probably permanent. 

 The two specimens in the Museum collection are of smaller 

 size than average-sized examples of L. maculata ; but in smaller 

 examples of this latter species the spines on the dactylus of the 

 raptorial limbs are not less numerous than in fully-grown indivi- 

 duals. With regard to the coloration of L. glabriuscula, it may 

 be observed that the tripartite division of the dark transverse 

 bands, noted by Milne-Edwards, is observable only in the an- 

 terior band of each segment in one of the Museum specimens. 



The description of L. glabriuscula as given by Lamarck 

 and Latreille seems to refer to this species, although its iden- 

 tification must remain uncertain, as the habitat is doubtfully 

 given as the Indian Ocean by the authors above named. On 

 the other hand, the habitat of St. Vincent is given by Latreille 

 for L. maculata. May there not have been here some confu- 

 sion of localities ? 



Lysiosquilla scabricauda. 



Squilla scabricauda, Lam. Hist. Anim. sans Vert. v. p. 188 (1818) ; 



Latreille, Encycl. Meth. Hist. Nat. x. p. 470 (1825), Atlas, pi. cxxv. 



fig. 1 ; Desm. Consid. Crust, p. 251, pi. xlii. (1825) ; M.-Edw. Hist. 



Nat. Crust, ii. p. 519 (1837) ; Gibbes, Proc. Amer. Assoc, p. 199 



(1850) ; S. I. Smith, Trans. Conn. Acad. ii. p. 41 (1869). 

 Squilla Hoeveni, Herklots, Addit. Faun, carcin. Afric. Occident, p. 17, 



pi. i. fig. 11 (1851). 

 LusiosquUla inornata, Dana, U.S. Expl. Exped. xiii. (Cr. i.) p. 616, 



pi. xli. fig. 1 (1852). 



