1907.] SPECIES OF CRYPTOCEPHALIXE BEETLES. 831 



interstices, in the shape of the prosternum and that of the general 

 outline ; there is also a difference in the shape of the elytral band. 



MONACHUS PERUANUS, Sp. n. 



Black ; anterior legs and thorax flavous, the latter with two 

 black spots, impunctate ; elytra finely punctate-striate, each with 

 a small fulvous spot near apex. 



Length 2 millim. 



Head impunctate, flav^ous, sometimes obscure fuscous ; antennae 

 extending to base of thorax, black, basal joint flavous. Thorax 

 twice as wide as long; sides straight, narrowed anteriorly; 

 surface entirely impunctate, opaque, flavous, with two elongate 

 short black stripes at middle, widely separated ; posterior margin 

 with a row of fine punctures. Scutellum elongate and pointed, 

 smooth, black. Elytra extremely minutely punctured, black, 

 the punctures commencing more deeply impressed at the base; 

 each elytron with a transverse flavous spot near apex. Prosternum, 

 mesosternum, and the anterior and intermediate legs flavous ; 

 rest of the under side and legs black, shining, and nearly 

 impunctate. 



Hab. Peru. 



Somewhat similar to M. bicolor Fab. and allied species, but 

 quite distinct in the markings of the elytra, which are the same in 

 the two sj)ecimens contained in my collection. 



MONACHUS NIGRITARSIS, Sp. n. 



Dark metallic blue ; labrum fulvous ; abdomen and tarsi black ; 

 thorax impunctate ; elytra distinctly punctate-striate, the punc- 

 tures visible to apex. 



Length 2^ millim. 



Head impunctate, finely granulate, opaque ; eyes ratlier closely 

 approached at top ; antennai black, second and third joints small, 

 the following ones widened, scarcely longer than broad. Thorax 

 strongly transverse and narrowed in front ; surface entirely 

 impunctate, with a narrow short groove at the base each side 

 near the scutellum, impressed with a few fine punctures. 

 Scutellum elongate, pointed. Elytra twice as long as the thorax, 

 the basal margin strongly raised, behind which each stria 

 commences with a deep puncture ; rest of the surface finely 

 punctured, distinct to the apex. Prosternum much broader than 

 long. Legs bluish, tarsi black. 



Hab. Pex'u. 



Difiers from M. nigritulus Boh. in the elytral puneturation, 

 (which is not obliterated behind), in the black tarsi, and want of 

 row of punctures at base of thorax. 



MONACHUS ORNATIPEISINIS, Sp. n. 



Black ; basal joints of antennae fulvous ; thorax impunctate ; 

 elytra very finely punctate-striate, each with an oblique longi- 

 tudinal red band from shoulders towards suture. 



