LeConte. | 616 [April 1s, 
rounded on the sides in front ; strongly punctured, disc broadly longitudi- 
nally impressed behind, flattened and explanate at the hind angles, which 
are rectangular; impressed each side at the base, which is truncate and 
not margined. Elytra a little wider than the prothorax, parallel, striz 
punctured, scarcely impressed ; interspaces transversely sparsely rugose 
and finely punctured. Beneath shining, trunk finely punctured. Ab- 
domen sparsely punctulate. Front cox separated by the prosternum, 
which is narrow and punctured. Length 5.5 mm.; .22 inch. 
Marquette, Lake Superior; one specimen. This species is 
related to I. bicolor, but is quite different in the less deeply 
striate elytra, the more strongly punctured prothorax and 
the dark antenne and legs. 
For the pupose of more clearly defining several new species, 
my table (New Sp. Col. Smiths. 8vo., 188) may be expanded 
as follows : 
Table of species of MYCETOCHARES. 
1. Front coxe separated by the prostermum. ..- <<. co. «cies cue elnioie Ze 
Front cox contiguous, cavities confluent.................0- shefelarahe tots 9. 
2. Prothorax as wide as the elytra, or nearly SO........---.20s.ceeeees 3. 
Prothorax at base narrower than the elytra..........ccceceesseeeee 6. 
3. Pubescence long, rather dense, prosternum very narrow............- 4. 
Pubescence very fine, or wanting ; elytra with red humeral spot not 
striate ; antennz palpi and legs more or less yellow........+...++-- 3: 
4, Dull ferruginous beneath, piceous above, prothorax strongly densely 
PI MINC TUM retevere reverence lrerclerorelceereteloteterstclerertevenntoastenlerelska tals iia 1. rufipes. 
Black or piceous, prothorax finely punctured...... 2. pubipennis 0. sp. 
5. Prothorax very wide, sparsely punctulate........... 3. laticollis n. sp. 
Narrower, prothorax sparsely punctulate, elytra more strongly punc- 
tured, two inner strise perceptible............-. ......4. Haldemani. 
Wider, prothorax less finely punctured, elytra strongly punctured, indis- 
(MAGIA MHA poo oposcnndoageadocdoooads popdooused .....5. fraterna. 
6. Elytra with red humeral spot...........2seeeceser cree eres ses seese th 
Elytra black, without spot........... SRPRS Pena aes oSuO toa booKt Goose 8. 
7%. Prothorax with three basal fovee........... ars! Sisieyeterar 2» 50, t0veata. 
ProthoraxiwathatwoubasaltOvecerrt- ceiiale eis olel-tateleleliieieeer tetotete 7. tenuis. 
8. Elytral strive deep, legs yellow. ..........cserececeeceeneee 8. bicolor. 
Elytral striz less impressed, legsdark......... «0200069. LTacilis Nn. Sp. 
9. Elytra black, without spots.........0cccecesececeecccreesercesees 10. 
Elytra with red humeral spot ; antenne stouter and legs black...... abt 
10. Antenne, legs and under surface ferruginous, last two ventral segments 
piceous ; prothoracic margin not flattened...........- 10. analis n. sp. 
Antenne, legs and under surface piceous ; prothoracic margin narrowly 
but strongly explanate................ atelererecetererers 11. lugubris n. sp. 
