1852. 103 
38. A. coracinus, elongatus niger, brevissime pubescens, capite subquad- 
rato, basi subemarginato, thoraceque longiusculo postice angustato confertim 
punctulatis, elytris elongatis, basi truncatis, grosse punctatis. Long.:17. 
Two specimens from the Upper Mississippi. This species differs from all the 
preceding by the thorax being perfectly without a basal margin, even at the 
sides. The head is wider than the thorax, subquadrate, posterior angles broadly 
rounded, base slightly emarginate, and impressed in the middle; it is finely and 
tolerably densely punctured; the eyes are small ; the antenne moderately thick. 
The thorax is longer than wide, a little narrowed behind, punctured as the 
head; anterior constriction distinct. Elytra scarcely wider than the head, 
parallel, truncate at base, strongly and coarsely punctured, base very slightly 
prominent each side; the pubescence is scarcely visible. The male has the 
pygidium prominent. 
39. A. pallens, pallidus, subtiliter punctulatus pubescens, capite parce 
granulato-punctato, medio levi, triangulari, basi emarginato,\thorace transverso 
postice valde angustato, elytris convexis, basi truncatis, abdomine nigricante. 
Long. :11. 
Lec. Agassiz’ Lake Superior, 231. 
Shores of Lake Superior. This and the next species differ from all the 
others, in having the head triangular, with the posterior angles almost acute, 
and the surface granulated. ‘The eyes are moderately large. The antenne are 
slender and long; the thorax is transverse and much narrowed behind. The 
terminal spurs of the tibie are very distinct, and those of the anterior tibie 
unequal; in the male the anterior tibie are slightly sinuate internally, and the 
terminal spur more prominent. 
40. A. granularis, nigro-piceus, pubescens, capite thoraceque confertim 
granulatis, illo triangulari basi emarginato, hoc transverso, postice valde angus- 
tato, elytris basi valde truncatis. confertim punctatis, apice testaceis, antennis 
tibiis tarsisque testaceis. Long. -13. 
Lec. Agassiz’ Lake Superior, 23]. 
Lake Superior, abundant. Varies in color: a. elytra testaceous, with a broad 
black band ; 2. testaceous, band of the elytra and abdomen black ; 7. testaceous, 
elytra with an indistinct fuscous spot at the middle. The sexual marks as in 
the preceding, with which this species agrees in form. Both species vary in 
having the thorax sometimes obsoletely channeled. 
Species unknown to me: 
. exilis Ferté, Anth. 121. 
- ictericus Ferte, Anth. 149. 
letus Fertée, Anth. 157. 
melancholicus Ferté, Anth. 174. 
. pusillus Ferté Anth. 178. 
squamosus Ferte, 216. 
lugubris Ferte, 217. 
. pallidus Say, Jour. Ac. Nat. Sc. 5, 245; Ferteé, 275. 
. impressipénnis Ferté, 300. 
A. texanus Ferté, 301. 
>>> bb > > b> 
Tanarturus Lec. 
This genus was founded by me in the 5th volume of the Annals of the Lyceum 
of Natural History, upon a very singular insect having the appearance of a 
Zuphium. More careful examination has convinced me that my Anthicus alu- 
taceus, described in the same place, must also be referred to this new genus; 
the mould on the specimens having prevented me at that time from seeing the 
generic characters. The following characters will separate this genus: 
Antennz in frontem inserte, sub-12-articulate, articulo 11mo elongato, quasi 
diviso, intermediis turbinatis. Tarsi articulis cylindricis, 4to minore non bilobato ; 
elytra depressa, apice truncata, abdomine breviora; corpus depressum, capite 
AG 
