392 SEEKICOENIA. 



the interstices quite flat throughout and thickly punctured. Beneath thickly punctured; prosternal 

 sutures feehly channelled in front. 

 Length 7j, breadth 2| millim. ( d .) 



Ilab. Mexico, Cerro de Plumas {Edge). 



Two specimens. This insect resembles some of the similarly-coloured species of the 

 genus Mater, but it may be at once distinguished from them by the strongly lamellate 

 third tarsal joint. The North -American A. bicolor, Lee, is an allied form, differing 

 from the present insect in the long and almost straight thoracic carina, the red 

 head, &c. 



3. Anchastus discoideus. (Tab. XVII. fig. 16, 6 .) 



Moderately elongate, feebly convex, opaque ; black, the prothorax rufo-testaceous, with a black patch on the disc, 

 the elytra with a broad marginal testaceous stripe, extending from the base to near the apex and widening 

 a little in front, the legs brownish, the femora infuscate in the middle, the propleurse testaceous ; thickly 

 pubescent, the pubescence yellowish-cinereous, fuscous on the dark portion of the elytra, a line down the 

 suture in one specimen excepted. Head densely punctured, moderately convex, margined in front ; 

 antennae about half the length of the body in the male, shorter in the female, the joints from the third 

 moderately widened and serrate, 3 and 4 equal in length. Prothorax about as long as broad, gradually 

 narrowing from the base in the male, broader and more rounded at the sides in the female ; the hind 

 angles acute, strongly produced, slightly divergent in the male, obsoletely and obliquely unicarinate, the 

 carina short ; the surface densely and rugulosely punctured. Elytra narrowing from the middle in the 

 female, more attenuate in the male, separately rounded at the apex ; rather deeply punctate-striate, the 

 interstices feebly convex, closely and rugulosely punctured. Beneath closely punctured; prosternal 

 sutures not channelled in front. 



Length 6-6 J, breadth lf-2 millim. ( tf $ .) 



Hah. Mexico, Acapulco in Guerrero (Edge). 



One pair. Differs from all the species here described in the dull rugulose thorax, 

 the elytral interstices also being rugulose. The female is considerably broader and 

 more parallel than the male. The male has a line of flavous pubescence along the 

 suture, of which there is no trace in the female. The discoidal spot on the thorax is 

 variable in size. The elytra are coloured as in A. flavovittatus, except that the flavous 

 vittse extend outwards to the lateral margins at the base. A. discoideus approaches 

 A. flavomaculatus ; both are unknown to Dr. Candeze. 



4. Anchastus circumcinctus. (Tab. XVII. fig. 17, ? .) 



Oblong-oval, rather broad, moderately convex, flattened above, shining ; the antenna? and head black, the latter 

 with a small rufous spot on either side in front ; the prothorax flavo-testaceous, with a large oval black 

 patch on the disc extending to the base and apex ; the scutellum and elytra black, the latter with a 

 transverse reddish mark at the base and a testaceous marginal stripe extending to near the apex ; the 

 prosternum in front and the propleurse yellow, the abdomen, except at the sides and apex, in great part 

 ferruginous, the rest of the under surface black; the legs black, the femora in great part, the coxse, and 

 the trochanters testaceous ; above and beneath thickly pubescent, the pubescence on the elytra fuscous 

 except along the suture and on the marginal vitta, where it is flavous, that on the under surface yellowish- 

 cinereous. Head closely punctured, convex, declivous in front, the front rounded, finely margined, and 

 separated from the anterior margin by a narrow space ; antennae short, scarcely reaching the hind angles 



