204 COCCINELLIDiE. 



This is a depressed, rather oblong species; the head and sides of the prothorax are 

 yellow ; the elytra have the basal and lateral margins yellow, the latter joined to a 

 vitta, which runs parallel to the black suture, at the apex. In the specimen from 

 Chilpancingo, which I think is a female variety of this species, the head is black, 

 the thorax only narrowly margined at the sides, and the subsutural vitta is joined to 

 the yellow margin at the base and is interrupted at the apex ; it is also smaller than 

 the typical examples. 



Qls. I have very carefully examined one of the specimens from Guanajuato, and 



also a specimen from Crotch's collection labelled " Chevr. ex Muls." Neither of these 

 bears out Mr. Crotch's statement that the epipleurse are " not foveolate " ; in fact, 

 the fovea? are perfectly apparent, and those for the hind knees are marked as usual by 

 a sinuation of the margin, which can be seen without turning up the insect. Both 

 our specimens from Guanajuato are males : the yellow vitta in one of these is joined to 

 the margin at both ends, and in this respect is perfectly similar to Crotch's specimens ; 

 the one I have examined is a female. 



Subfam. DISCOTOMIDES. 



The Discotomides are a group of five or six genera peculiar to the New World, of a 

 highly developed form, containing very glabrous species of great beauty, of the average 

 size or above it, and often distinguished by having one or two joints of the antennae 

 coalescing so as to give them the appearance of being from eight to ten in number. 



Their position is doubtful, but they certainly do not come in well where Crotch 

 placed them, following Lithojphilus. Chapuis places them as his third Group between 

 the " Coccinellites " and the " Cariites." 



We here place them as conveniently closing the smooth section. 



They form a very natural link with the Endomychidse through Endomychus, and 

 seem worthy of a higher rank than can be given them in a linear arrangement. 



SELADIA. 



Selasia, Mulsant, Spec. Col. Trim, secur. p. 216 (1850) (nomen prseocc). 



Madia, Mulsant, Monogr. Coccin. p. 154 (1866); Crotch, Rev. Coccin. p. 304; Chapuis, Gen. 

 Col. xii. p. 187. 

 Seladia is a genus which of all the Coccinellidse exhibits the greatest divergence 

 from the normal type, and very closely recalls the Endomychidous form in some of its 

 characters. The antennae are robust and have the club absolutely as in some genera 

 of that family, while the tarsi, no less by their clearly tetramerous structure, might 

 almost cause these insects to be attributed to the same family. The colour and 

 markings and the depressed form are suggestive of either the Endomychidee or the 



