830 THE LATE MR. M. JACOBY ON NEW [NoV, 26, 



At all events the present descriptions add considerably to those 

 forms already known from the regions in qviestion. 



A few species from some West Indian islands have been added. 



MONACHUS PICIPES, sp. n. 



Black and shining ; basal joint of antennae, labrum, and tibiae 

 and tarsi more or less piceous or fulvous ; thorax impunctate ; 

 elj^ra strongly punctate-striate. 



Length 2-2^ millim. 



Head deeply inserted in the thorax, black, impunctate, minutely 

 granulate ; antennse with the lower four joints fulvous, rest 

 black, strongly widened, extending to the base of the thorax. 

 The latter twice as broad as long, strongly narrowed in front, 

 subcylinclrical, the sides nearly straight, the surface minutely 

 granulate but not perceptibly punctured, shining. Elytra, with 

 a slight purplish gloss strongly punctate-striate at the base, each 

 row beginning with a small fovea, apical portion nearly im- 

 punctate. Base of the femora and the tibiae more or less fulvous 

 or piceous. Prosternum strongly transverse, sometimes fvilvous. 



Hah. Peru ; Colombia. 



Differs from M. nigritula Boh. in the black, shining, not blue 

 opaque colour of the upper surface and the want of the thoracic 

 depression. M. tenehricosus Suff. is of nearly double the size and 

 has also thoracic depressions. 



MoNACHUS MEXICANUS, Sp. n. 



Black ; basal joints of the antennae fulvous ; thorax opaque, 

 impunctate ; elytra deeply punctate-striate, bluish black with a 

 transverse oblique fulvous band at middle. 



Length 2| millim. 



Of oblong-ovate shape, distinctly narrowed at apex ; the head 

 impunctate, very narrow between the eyes, emargination of the 

 latter short but deep; lower four joints of antennae fulvous, the 

 rest wanting, third and fourth joints very short. Thorax pro- 

 poi'tionately long, strongly narrowed anteriorly ; sides feebly 

 rounded ; basal margin simple ; entire surface dull black, finely 

 granulate, without trace of punctures. Scutellum elongate, 

 pointed and narrow. Elytra nai-i'owed at apex and convex, deeply 

 and regularly punctate-striate, the punctures distinct to apex ; 

 the interstices costate at sides and slightly raised at inner disc ; 

 the surface of a more bluish colour than that of thorax and leather 

 shining; the fulvous band broad, commencing below the shovUders, 

 and extending obliquely to suture, which remains, however, of the 

 ground-colour to a very small extent ; upper margin of the band 

 concave near the suture, but convex at the same place at lower 

 edge. Body below and legs bluish black. Prosternum slightly 

 broader than long, impunctate, its lower edge feebly emarginate. 



Hah. Yantepec in Mexico. 



In coloration this species agrees entirely with M. hiplagiaiKs 

 Boh., but differs in the strong elytral puncturation and I'aised 



