328 SUPPLEMENT. 
The scutellum is not always prolonged behind into a sharp point; and there remains 
no character of sufficient importance to separate the genus from Mannophorus, which 
name will have the priority if the two genera are to be reunited. ‘The antenne in the 
males are much longer, and in both sexes the eleventh joint is appendiculated; but 
this latter peculiarity is shared in by Mannophorus forreri. The simple mesosternum 
is the sole constant character which separates the genus from Sphenothecus (sensu 
Dupont). 
Ischnocnemis minor (p. 83). 
The precise locality for this Mexican species is Puebla, according to the Sallé 
collection. 
3. Ischnocnemis sexualis. 
Mannophoro ferreo affinis et similis. Multo angustior, sublinearis; niger, elytris chalybeo-nigris; thorace 
anguste oblongo, perparum rotundato, confertim sed minus grosse confluenter punctato; scutello late 
triangulari ; elytris apice breviter truncatis, subnitidis, confertim punctulatis, utrinque costulis duabus 
angustis levibus; antennis ( J) quam elytra longioribus, articulo 1° quam pracedens longiori, integro. 
Long. 5lin. ¢. 
Hab. Mexico (Sallé, Bates, ex coll. Baden). 
Named Leptocnemus sexualis, Chevr. (MS.), in the Sallé collection. The choice of 
the specific name is enigmatical, the other sex of the species not being represented 
in the same collection. But it is probable that Mannophorus ferreus is the female of 
I. sexualis, and was known to Chevrolat, in which case the name would be applicable ; 
the differences between the two in form and sculpture being very remarkable. 
4. Ischnocnemis czrulescens. 
I, secuali quoad formam similis, sed differt elytris haud costulatis, etc. Anguste cylindricus, supra cyaneus, 
nitidus, subtus niger ; thorace cylindrico, basi perparum constricto, sat confertim sed discrete foveolato ; 
scutello triangulari, apice haud prolongato; elytris apice obtuse truncatis, undique sat laxe punctatis, 
utringue costula unica obsoletissima ; antennis [ 9?] quam corpus longioribus, articulo 11° quam preece- 
dens paullo longiori, integro; tarsis posticis brevibus ; mesosterno simplici. 
Long. 44 lin. 
Hab. Mexico (Baden, coll. Bates). 
SPHENOTHECUS (p. 84). 
Sphenothecus tomentosus (p. 84). 
I have seen no specimen of Sphenothecus, in the large series of this genus examined, 
which agrees with Dupont’s figure of S. tomentosus. One labelled S. tomentosus in the 
Sallé collection is an approach to it, the central black stripe of each elytron having a 
short white line in the middle, forming the commencement of a division of the black 
stripe into two, but the thoracic marks are not different from the typical S. trilineatus. 
S. tomentosus is probably a very rare variety or aberration of S. trilineatus. 
