838 THE LATE MR. M. JACOBY ON NEW [Nov. 26, 



Gryptocephalus acuminatus, sp. n. 



Flavovis ; terminal joints of antennae and the breast black ; 

 thorax finely granulate, an obscure broad oo-shaped mark at 

 middle pale brownish ; elytra finely punctate-striate, the punc- 

 tures piceous. 



Length 1^ millim. 



Larger and more robust than the preceding ; the head as in 

 that species ; last six joints of the antennae thickened, only extending 

 to base of elytra. Thorax with straight lateral margins, the 

 posterior angles strongly produced and pointed ; surface minutely 

 granulate, with a broad and obscure brownish cr-^-shaped mark 

 so frequently met with in the group ; this design includes three 

 flavous spots at the base and another one near anterior margin 

 at middle. Elytra cylindrical, distinctly punctate-striate ; all the 

 punctures piceous and distinct to apex, the seventh row only in- 

 dicated at base, entirely wanting below the shoulders, the corre- 

 sponding interstice on this account much wider than the others and 

 as wide as the last two. Breast black ; abdomen piceous at base. 



Hah. Tucuman, Argent. Rep 



There seem to be sufficient differences to separate this species 

 from the preceding, the more so as another similar specimen is 

 contained in the La Plata Museum. 



CrYPTOCEPHALUS BIVITTICOLIilS, Sp. n. 



Flavous ; base of head, antennae, and tarsi black ; thoi-ax 

 remotely punctured, with two black bands ; elytra closely punc- 

 tate-striate anteriorly, each elytron with a subsutural and lateral 

 narrow band and suture black. 



Length 4| millim. 



Head with a few punctures at vertex, the latter in shape of a 

 narrow transverse band, black, another small black spot in front 

 of each eye ; middle of head with a deep short groove which 

 extends to clypeus, the latter very strongly and closely punctured ; 

 antennae with second and third joints flavous below, rest black, 

 third joint half the length of fourth, following four elongate, rest 

 wanting. Thorax strongly subcylindrical, long, scarcely one half 

 broader than long ; sides rounded, rather suddenly constricted in 

 front ; surface sti'ongly and remotely placed at sides and near 

 anterior margin, flavous, each side with a straight, black, narrow 

 band near middle, from base to apex, basal margin strongly 

 thickened. Scutellum black, broad, truncate at apex. Elytra 

 rather short and broad, i-ather finely punctured in semiregulai-, 

 not very closely placed rows from base to middle ; puncturation 

 very obsolete near apex ; the suture narrowly and two broader 

 bands from base nearly to apex black, the first band commences 

 from middle of base and the second is placed close to lateral 

 margins. Below flavous, a spot at outer side of femora, extreme 

 apex of tibiae, and the tarsi black. Prosternum broad, rugosely 

 punctured, pubescent, basal margin straight. 



Eab, Argentine Ptep. 



