NORTH AMERICAN COLEOPTERA. 113 



long, slightly narrowed in front, sides very feebly arcuate, hind angles not 

 prominent, disc convex, a very vague fovea each side, surface closely and rather 

 finely punctate, not shining. Elytra nearly twice as long as wide, sides feebly 

 arcuate, surface finely scabrous and very finely punctulate. Length .16— .18 

 inch. ; 4 — 4.5 mm. 



Male. — First joint of the anterior and middle tarsi distinctly thickened. Last 

 ventral truncate, with a rectilinear incisure each side as in thoracicus. 



Female. — Last ventral oval at tip. 



The first joint of the hind tarsus is one-third the length of the 

 tibia, and as long as the following joints together. 



'j'his species is peculiar in the densely finely punctate and opaque 

 surface. 



Occurs in Colorado and New Mexico. 



Li. texanus n. sp. — Form oblong, parallel, black, thorax and legs (except 

 bases of femora) yellow. Antenupe two-thirds the length of the body, brown, 

 the basal five joints pale, joint two small, nodiform, third three-fourths the 

 length of the fourth. Head smooth, transverse impression straight, entire. 

 Thorax one-third wider than long, widest in front of middle, not narrower in 

 front, sides arcuate, hind angles not prominent, disc smooth. Elytra twice as 

 long as wide, sides very feebly arcuate, disc sparsely, but distinctly punctate, 

 nearly smooth at apex, surface shining. Body beneath black, prosternum pice- 

 ous. not at all prolonged between the coxse. Legs yellow, the bases of the 

 femora piceous, but less on the anterior pair. Length .16 inch. ; 4 mm. 



Female. — Last ventral acutely oval at tip. 



The first joint of the hind tarsus is scarcely more than a fourth 

 of the length of the tibia, and not as long as the following joints 

 together. 



This species begins a series of oblong form and with yellow thorax. 

 They seem to be very closely related, but may be separated by a 

 strict regard for the characters given in the table, the present being 

 especially well separated by the absence of any metallic coloring 

 and by the front coxse being absolutely contiguous. 



Occurs in Texas, special locality unknown. 



L.. transitus n. sp. — Elongate, parallel, beneath piceous, head and elytra 

 metallic-green or bluish, thorax yellow. Antennse two-thirds the length of body, 

 piceous, the basal five joints yellow, with brownish streak above, joints 2-3-4 

 gradually longer. Head smooth, the transverse impression straight and entire. 

 Thorax a little wider than long, widest in front of middle, sides slightly arcuate 

 in front, oblique posteriorly, hind angles slightly prominent, disc convex, 

 smooth ; scutellum piceous. Elytra rather more than twice as wide as long, 

 sides parallel, disc sparsely punctate, sides and apex smooth ; prosternunj with a 

 linear prolongation between the coxae; femora piceous, with metallic lustre, the 

 tips with the tibise and tarsi yellow. Length .16 inch.; 4 mm. 



3Iale. — First joint of front tarsi slightly thickened. Last ventral segment 

 broadly truncate, the disc slightly flattened. 



Female. — Last ventral oval at tip. 



TRANS. AM. ENT. SOC. XX. (15) JUNE. 1893. 



