GALEETJCELLA. 489 



1. Galerucella notulata. 



Galeruca notulata, Fabr. Syst. Eleuth. i. p. 489 l ; Olivier, Ent. vi. p. 636, t. 3. f. 44 a j Leconte, 

 Proc. Acad. Phil. p. 217 (1865) \ 



Hob. North America 1 2 3 . — Mexico, Saltillo in Coahuila (Br. Palmer), near the city 

 of Mexico (Flohr), Tuxtla (Salle) ; Guatemala (coll. Jacoby). 



I have not much doubt that I am right in referring the specimens from the above 

 localities to Fabricius's species. It seems to me that the only difference between G. 

 notulata and G. notata, Fabr., consists in the position or direction of the elytral black 

 stripes, the subsutural one in G. notulata uniting with the black sutural stripe below 

 the middle (which is the case in all the specimens before me), but not in G. notata, 

 where it is isolated. In some examples from Tuxtla the pubescence is rather longer 

 and more distinct, obscuring to a certain extent the elytral stripes, the position of which 

 can, however, be traced ; the thoracic spots are also absent in one specimen, but present 

 in others with similarly strong pubescence. Neither of the figures given by Olivier of 

 G. notulata and G. notata quite agree with the Central- American specimens, nor with 

 the descriptions of Leconte ; it is possible that they are varieties of one another, as 

 structural differences seem to be absent. 



2. Galerucella alternata. 



Oblong-ovate, greenish-fuscous ; basal joints of the antennae and the legs obscure testaceous ; thorax deeply 

 transversely depressed at the sides ; elytra closely covered with yellow pubescence, each with the lateral 

 margin and two more or less distinct longitudinal stripes greenish. 



Var. Above dark yellowish, the elytral stripes slightly darker. 



Length 2-2| lines. 



Head greenish, pubescent, scarcely visibly punctured, with a central longitudinal groove, the frontal tubercles 

 flattened ; antennas nearly two thirds the length of the body, obscure fuscous or paler, the basal joints 

 more testaceous, the third joint not longer than the fourth ; thorax twice as broad as long, the sides 

 rounded, all the angles obtuse, the surface very finely rugose, scarcely pubescent, and with a deep 

 transverse depression on each side, extending nearly to the middle ; elytra closely covered with yellow 

 pubescence which almost entirely obscures any punctuation, each with two more or less distinct greenish 

 stripes (which are joined at the ends) on the middle of the disc; in the male the last abdominal segment 

 is broadly emarginate in the middle and the sides are transversely impressed, in the female the same part 

 is nearly simple. 



Hah. Mexico, Oaxaca (H'oge) ; Guatemala, San Geronimo, Las Mercedes, La Tinta, 

 San Juan in Vera Paz (Champion) ; Panama,, Volcan de Chiriqui, Bugaba, David 

 (Champion). 



Typical examples of G. alternata may be known by the two greenish, closely 

 approached elytral stripes; occasionally, however, these latter are almost entirely 

 obsolete. The antennae are rather longer than in the allied species, and the inter- 

 mediate joints are somewhat thickened and robust ; in the specimens from Las Mercedes 

 they are rather more slender. In the variety, which shows no trace of green, the 

 elytral stripes are just visible, being slightly darker than the yellowish-brown ground- 

 colour. 



biol. centr.-amer., Coleopt, Vol. VI. Pt. 1, December 1886. 3 r 



