On neio Genera and Species o/" GallerucInEe. 411 



Museum collection from the Fiji Islands and New Hebrides, 

 and there is no difference in the position of the spines on the 

 interantennal plate — in fact, that the forms from these widely 

 separated localities belong to one and the same species. I 

 conclude, therefore, that Milne-Edwards's description of these 

 spines as " reunies a leur base en faisceau " is not strictly 

 correct, and that their position is more correctly described by 

 Heller, and that, as in so many other cases, the Red-Sea 

 species is distributed over the Avhole Oriental region. Latreille 

 gives the Mauritius, and Milne-Edwards the Indian Ocean as 

 its habitat. 



Alpheus Icevis. 



Alpheus Icevis, Randall, .Tourn. Ac. Nat. Sci. Phil. viii. p. 141 (1839) : 

 Dana, U.S. Expl. Exp. xiii. Crust, p. 556, pi. xxxv. fig. 8 (1852) ; 

 Heller, Sitzungsb. Akad. Wien, xliv. 1, p. 269, pi. iii. fig. 16 (1862). 



One female individual of this very common Indo-Pacific 

 species was collected. When dry, the larger hand is seen to 

 be very prettily marked with spots of a dusky pink. Alpheus 

 insignis, Heller [I.e. p. 269, pi. iii. figs. 17, 18), and A. 

 gracilis ^HqWox {I.e. p. 271, pi. iii. figs. 19, 20), are both 

 nearly allied Red-Sea forms : the latter comes particularly 

 close ; but both differ in having a transverse groove or impres- 

 sion on the upper margin of the larger hand near the base of 

 tlie mobile finger, and in the pi'oportional length of the 

 joints of the wrist of the second pair of legs. 



Tetraclita porosa, var. communis. 



osa, var. comnninis, Darwin, M 

 I, pi. X. fig. 1 a (1853). 



Three specimens are in the collection. 



Tetraclita porosa, var. comnninis, Darwin, Monogr. Cirripedia, Bala- 

 nidse, p. 329, pi. x. fig. 1 a (1853). 



XLVI. — Descriptions of new Oenera and Species of Galle- 

 rucinae. By Joseph S. Baly, F.L.S. 



Genus Peasyptera. 



Corpus ovatum, postice paullo ampliatum, convexum. Caput ex- 

 sertum ; facie pcrpendiculari ; clypeo transverso vel transverso- 

 quadrato, lateribus rectis ; encurpis transversis, contiguis ; carina 

 lineariformi, paullo elevata ; antennis filiformibus, gracilibus, 

 articulo primo elongato, curvato, ad apicem incrassato, secundo 

 brevi, tertio quam quartus breviorc ; oculis integris, promiaulis. 

 Thorax transversus, dorso leviter transversiiu excavatiis. Elytra 

 thorace latiora, convexa, confuse pimctata ; limbo inflexo fere ad 

 apicem producto. Pedes graciles ; coxis anticis fere contiguis ; 



