NORTH AMERICAN OOLEOPTERA. lO.j 



TEI.EPHANIIK Er. 



Last joii\t of maxillary palpi (Uit obliquely, securiform ; that of the lahial is 

 cuneiform hut truncated transverseh'. Mandibles short, robust and arcuate. An- 

 tennae variable in leno;th ; first joint long and fusiform. Prothorax generally 

 longer than broad, constricted behind. Elytra broader than the prothorax. sub- 

 parallel, a little narrowed and rounded behind. Legs slender, moderately long; 

 ))osterior femora swollen ; tarsi pentamerous; last joint bilobed. 



Althouffh the species in Mexico and South America are numerous, we 

 have tlius tar only discovered two within our territory. It is, however, 

 likely that others will be found. These species may be differentiated as 

 follows : 



Color ochreous yellow ; head black 1. velox. 



Color of elytra dark brownish piceous; head and prothorax unicolorous, and of 

 a dark fuscous tint ..2. lieContei. 



1. T. velox Ilald. — Form elongated. Head and prothorax equal in width: 

 elytra one and three-fourths times the length of the head and prothorax together. 

 Head black, remainder of the body yellowish testaceous. Elytra densely and 

 coarsely pubescent. Head and prothorax more sparsely so; entire surface coarsely 

 and closely punctured. Antennae about as long as elytra, darker towai'd the tip. 

 Fiftli abdominal segment much shorter than the fourth. Tarsi pubescent beneath. 

 Length 4.0 mm. 



Plate VIII. Fiu. 4. Widely diffused. 



This well known and graceful insect is very common under rubbish of 

 various sorts, and as its name implies, runs with very remarkable swift- 

 ness. It is often mistaken at first sight for a Carabide from its habits and 

 gait. The large securifcirm joints of the palpi often protrude in front of 

 the lal)rnin in sueh a m;uiner as to give the appearance of a double horn- 

 like process. 



2. T. LieContei n. sp. — Form elongated and moderately convex. Head and 

 prothorax moderately pubescent; pubescence of elytra long, moderately dense, 

 and arranged in very closely approximate rows. Entire body dark brownish pi- 

 ceous; liead and prothorax dark reddish testaceous, or dark fuscous. Head nearly 

 quadrate; sides parallel, or nearly so: inter-antennal groove distinct; length from 

 hitter to posterior margin slightly greater than width at the last point; densely 

 punctate ; eyes moderate ; antennae about equal in length to those of T. velox ; of 

 same color as head with the exception of the last joint, which is somewhat paler 

 in tint; first joint nearlj' equal in length to the next three together. Prothorax 

 nearly quadrate ; sides parallel, and almost straight for three-fifths of the length, 

 then (wuverging moderately; surface closely punctured. Elytra twice as long as 

 liroad, punctato- striate: punctures large; interspaces much wider than the punc- 

 tures; sides nearly parallel, and very slightly arcuate for four-fifths of the "dis- 

 tance from the humeri, then together somewhat acutely rounded behind ; humeral 

 angles rather acute; surface shining through the pubescence: under surface of 

 body of same color as tlie elytra, or but very slightly darker ; legs somewhat paler. 

 Abdominal segments moderate and successively decreasing in length posteriorly. 

 Lengtii ."J.K mm. 



