BEROSUS. 83 
tion of the scutellar punctuation is remarkable, and is constant in the small series of 
individuals before me. 
This species is labelled in Sallé’s collection «« B. mexicanus, E. Dugés;” and I have 
retained this manuscript name. 
9. Berosus metalliceps. 
Niger, capite purpureo-metallico; antennis, palpis, prothorace elytrisque pallide testaceis, fere albidis; capite 
fortiter haud dense punctato; thorace valde transverso, sparsim punctato ; elytris striatis, striis crenato- 
punctatis. 
Long. 24, lat. 17 lin. 
Hab. Mexico, Tres Marias islands (orrer). 
A very distinct species, that may be recognized at a glance by the immaculate thorax 
and elytra. The striz on the elytra are deep, and the interstices are impunctate ; but 
on the third there is an irregular and interrupted series of coarse punctures, and on 
the fifth still more isolated punctures exist. The scutellum is coarsely punctate. The 
mesosternal Janiina is but little elevated, but shows in front a well-marked, more 
prominent angle. The two basal joints of the front tarsi of the male are a little 
dilated. The apical ventral segment bears a transverse emargination at the extremity, 
the base of which is slightly rounded but not at all bidentate. 
Three individuals of this remarkable species (unfortunately in very bad preservation) 
have been sent by Forrer. 
10. Berosus gracilipes. 
Supra rufo-testaceus, elytris nigro maculatis, capite viridi-aureo, fronte media purpurascente, thorace in 
medio metallico-signato ; subtus fusco-testaceus, antennarum basi, palpis pedibusque testaceis, his tibiis 
tarsisque plus minusve fuscescentibus ; capite thoraceque crebrius punctatis ; elytris striatis, striis fortiter 
punctatis. 
Long. 24, lat. 17 lin. 
Hab. Muxico, Oaxaca (Hoge); GuaTEMALA, San Géronimo (Champion). 
Head closely and coarsely punctate; vertex finely carinate. Thorax closely, sub- 
rugosely punctate, the punctuation consisting very distinctly of coarser and much finer 
punctures mixed together; the sides nearly straight, very slightly converging behind ; 
on the middle is a rather large metallic mark, enclosing in its middle a very narrow 
yellow space. The elytra are shining, and are coarsely sculptured ; the striee towards 
the sides are very deep and bear very coarse punctures; and the interstices are coarsely 
and irregularly punctured. The legs are elongate and very slender, the tibie and 
tarsi of the two hinder pairs being more or less infuscate; the under surface is 
either yellow or infuscate-yellow. The lamina of the mesosternum is large. The 
apices of the elytra are simply rounded. ‘The male is distinguished from the female 
only by a slight dilatation of the basal joints of the front tarsi; in each sex there is a 
rather large emargination on the last ventral segment, the base of which bears a short 
bidentate tooth. The basal abdominal segment is strongly carinate in the middle. 
MM 2 
