32 PHYTOPHAGA.—SUPPLEMENT. 
it differs, however, from that species in its entirely fulvous head and in the shape of the 
elytral markings. From the other closely allied forms of the same group L. permutans 
may be known by the black (not blue) colour of the markings, the want of the humeral 
spot, and the deep punctures of the elytra, and other details pointed out in the above 
description. The variety differs from the type in the elytral spots being smaller—one 
is placed within the depression and the other below the middle; other differences I am 
not able to find. 
47, Lema exarata. 
Lema exarata, Clark, Cat. Phyt., App. p. 60°. 
Lema hégei, huj. op. p. 11. 
Hab. Mexico, Vera Cruz, Cosamaloapam, Cordova (Sallé), Jalapa (Hoge), Teapa!. 
Clark’s species was unfortunately overlooked by me and described under a new name. 
It may be known from Z. maculipennis by the much more coarsely punctured elytra 
and by the want of the black shoulder-spot. It is, however, not correct to say, as 
Clark does in his description, that the punctuation is ‘‘ unarranged ”—neither in the 
type nor in the other specimens before me is this the case; all that can be said is that 
the interstices within the deep fovea below the base of the elytra are rather swollen, 
the linear arrangement of the punctures (as in most other species of Lema) being 
perfectly clear. Some specimens have a black spot placed within the elytral depression, 
but in others this is absent. Iam unable to find any trace of a fuscous spot at the 
sides of the thorax or of the similarly-coloured elytral punctures mentioned by Clark. 
The form with a single black spot within the elytral depression was described by me in 
the earlier part of this work under the name of L. hégei. 
49. Lema sexpunctata. 
Lema sexpunctata, Oliv. Ent. vi. p, 738, t. 1. fig. 18’; Lacord. Monogr. in Mém. Soe. Liége, iii. 
p. 486%. 
Lema albini, huj. op. p. 12°; Lacord. loc. cit. p. 492%. 
Hab. Nort America! ?3,--Mexico’ 4, Cordova, Cosamaloapam, Totosinapan, Mirador 
(Sallé); Guatema.a, San Isidro, Cerro Zunil, Las Mercedes, Volcan de Atitlan, Duefias 3, 
San Gerénimo (Champion); Nicaracta, Chontales (Janson); Costa Rica (Van Patten). 
L,. albini is evidently a very variable species and is considered by Crotch (Proc. Ac. 
Phil. 1873, p. 26) to be a variety of L. serpunctata, Oliv., with which I am inclined to 
agree. The elytral spots are very variable in size and also in number: in the true 
L. sexpunctata there are three spots on each elytron; in L. aldini these spots are larger 
—the sutural with the corresponding one on the opposite elytron is confluent (together 
forming a triangular patch), and the posterior one assumes the shape of a transverse 
band. In these forms of L. albinj the sides of the breast and a@ spot on the first 
