Coleopterological Notices, VI. 68T 



The genus Antliicus, as here limited, ma}- be said to comprise 

 those species of the tribe Anthicini which have the mesosternum 

 normal and undilated, the last joint of the antennae entire, the 

 pronotum unmodified in structure, and the vestiture simple, — that 

 is, consisting of a single set of hairs, disregarding in this connec- 

 tion the erect setfe which are especially tactile in function. The 

 last joint of the maxillary palpi is moderate in size and securi- 

 form, and the antenntB are comparativel}' short and gradually 

 enlarged toward apex, — never capitate as in Sapintus. It is very 

 abundant in species throughout the United States, but, in com- 

 7non with all other heteromeride groups, is particularly well rep- 

 resented in the southwestern parts of the country and in the 

 regions bordering the Pacific Ocean. 



The species known to me may be identified by the following- 

 provisional table : — 



Elytra with distinct humeri 2 



Elytra oval and convex, without humeri 27 



2— Body hispid throughout with very long erect setie 3 



Body witli shorter pubescence 4 



3 — Head strongly rounded behind in circular arc 1 . lioi'i'id us 



Head truncate at base 2. rilftllus 



4 — Head strongly and semi-circularly rovuided behind the eyes. 



Pale testaceous, the elytra biguttulate 3. ci'ibratus 



Black, the elytra quadriguttulate 4. hecate 



Head truncate or broadly arcuate at base, the temporal angles more or less dis- 

 tinct ; pronotum normally convex throughout, not moditied near the 



apex 5 



5 — Larger or medium species, seldom under ;i.] mm. in length, the sides of the 

 prothorax generally oblique and arcuate toward base or the subbasal con- 

 striction, and broadly rounded anteriorly 6 



Small species never exceeding 2), mm. in length, the sides of the prothorax 

 generally more or less prominently rounded anteriorly, and obli(iue and 



nearly straight or feebly sinuate thence to the base 19 



6 — Abdomen rather coarsely and more sparsely punctate; body pale in color...? 



Abdomen always minutely and more or less densely pxinctate 10 



7 — Pronotum simply punctate; apex of the copulatory sheath rapidly nar- 

 rowed, the extreme tip minutely prominent 8 



Pronotum sculptured in longitudinal rugte, the copulatory sheath gradually 



and arcuatelj' narrowed to an ogival point, at least in comptmtns 9 



8 — Temporal angles broadly rounded. 



Pubescence relatively long, coarse and conspicuous; elytral fascia generally 

 distinctly black. 



Eyes large, much longer than the tempora 5. eplii|>i>iuiM 



Eyes smaller, subequal in lejigth to the tempora 6. siiiiiolus 



