June, 1898 ] 
Casey: North American Coleoptera. 
91 
Octotemnus Mellie. 
This is a very pronounced and distinct genus, differing from E„- 
7cte 7(\bl h 7 u UtHne , ° f the b ° dy ’ ab5ence of male sexual char¬ 
acters of the head and prothorax, and in tibial structure. The maxil- 
arj pa pi are slender and pointed, the antennal club well developed 
and very loose. the joints being attached by very slender p XtTnl 
V h 1e sens,t ‘ ve P° res approximate at each side of the apex The 
prosternurn is short and somewhat concave before the coxte, with the pro 
c s; hm d laminate. There is no fovea on the first ventral segment 
near the bale the tote“ feeb ' y and approximately bi-impressed 
near the base, the intervening area elevated and prolonged backward in 
S ThTr 8 / Ular StrUCtUre " 0t -^^d S elsewhere :f«h: 
ly. The surface is glabrous, but the elytra have a few widely dis- 
persed erect setae. Our two species are very closely allied : they mlv 
be described as follows from the male:_ ' 
Form more narrowly oval; sire larger, the basal abdominal proce-s of the male 
very acute at apex, pale testaceous, polished throughout; head and eyes well 
developed, the latter convex; front broadly, evenly convex very mfautlly 
parsely punctate; clypeal margin slightly thickened for a short distance from 
be eyes; prothorax but little wider than long, circularly rounded at apex Z 
sides diverging slightly ,0 the base ; angles all very broadly rounded • base v rv 
minutely margined ; punctures very minute, feeble and spaL ; elytra’ Mlyone 
coast (from Vancouver to San Francisco) .... dLnudatu*' ^ ° 
“ er t.°T b nd ” 0Ie br ° adly OVa1 ’ P ° 1Uhed > th * Pactum -re o S ; 
2'7 T’ ,he dyt,a bare ' y 0ne ' half than wide, distinct!^ 
han the prothorax and barely twice as long, the surface nearly smooth, very mi- 
nutely, sparsely punctate. Length 1.35-..6 mm.; width o 6-0 6 S mm 
Rhode Island, New York and Pennsylvania. tevis ; £ „ 
Both of these species are very common, and it is remarkable that 
<t~'b«l. Perhaps the O, 
ell,, ma, h„h, b „ t lh , t ^ 
leans, is said to have the prothorax longer than wide and the 
>tra only one half longer than the prothorax, which language agrees 
, ously also with the figure and in no way suits either of the above 
