402 
supplies being sufficient to show that Brachygnathus which is 
now current has priority, Gistl’s mention of the genus without 
description or figure and without a described species cannot 
suffice for its establishment. The second insect described is a 
very beautiful Pterostichid forming a new genus. As we are 
indebted for this as well as for the Brachygnathus to M. Antonio 
de Lacerda of Bahia I have naturally named this species after him. 
Brachygnathus Burmeisteri. 
Niger, elytris aurato-cupreis, fulgidis; prothorace quam 
latitudine paulo longioreaugulis posterioribus obtusis; elytris 
valde convexis, profunde sulcatis, sulcis ad apicem summum 
grosse punctatis. 
Long. corp. 17, thoracis 4i|g, lat. thor. 4’|i6 millim. 
Hab. Bahia, Dom. Lacerda. 
Head and thorax with undersurface of body and epipleurae 
quite black. The thorax narrower at the front margin than at 
the base, the hind angles very obtuse, the median channel very 
deep, the basal fovea deep, elongate. Elj'tra very convex with 
an almost inflated appearance, of a beautiful golden copper 
colour becoming green dose to the outer margin, very deeply 
grooved, without punctuation except that on the declivous apex; 
the grooves are very coarsely punctate, and that of the external 
interstice bears some coarse punctures, most crowded behind 
and at the shoulder, the interstices are very convex. 
The species should apparently come between B. muticus 
Perty and B. festivus Dej. There is no tings of blue colour 
on the head thorax or undersurface, but the form of the thorax 
accords with the description given by Burmeister of that of 
B. muticus. 
Lobobrachus (nov. gen. Pterostichinorum). 
Palpi omnes articulo ultimo securiformi; mentum lobo 
mediali parum prominulo, lato, truncato-emarginato; pro¬ 
thorace utrinque setis elongatis tribus. 
The only genus of Pterostichini possessing 4 palpi with 
dilated or securiform joints is Microcephalus, and though Lobo¬ 
brachus agrees with it in this point, in other respects the two 
have comparatively little dose affinity; Euchroa is perhaps 
closer to Lobobrachus, but that genus has the terminal joint 
of the maxillary palpi cylindric, and from both genera Lobo¬ 
brachus appears to be distinguished by the remarkably broad 
short central lobe of the mentum; the homologous part is usu- 
ally in descriptions calied a tooth, but that term would describe 
Stett. entomol. Zeit. 1888. 
