THE CANADIAN ENTOMOLOGIST. 241 



of the Colorado $ 's the punctuation is so coarse that it is almost scabrous, 

 the Bridgport 9 has a dark mark on the vertex of the head, and the 

 thorax with a very indefinite M ; elytra with the standard outside dark 

 marks indicated by faint indistinct clouds. This is the form called livens ? 

 Lee, by Jacoby in Biologia, VI, Pt. I, Supp. p. 151. 



Amedee and Bridgport, California ; Winslow, Arizona • St. George, 

 Utah. Collected by Wickham, 9 ? 's, 3 $ 's, two Arizona, one Texas. 

 Four ° 's, 4 o* ' s > La Junta, Colorado. Type coll., Bowditch. 



Pachybrachys mellitns, n. sp. — Form and size of Jacobyi, n. sp., but 

 upper side entirely dark honey-yellow, shining. 



Head large and flat, coarsely punctate, almost rugosely so on the 

 usual dark -frontal and vertex marks ; antennte with five or six basal joints 

 yellow, rest dark, shorter than Jacobyi, not reaching the hind coxae in £ ; 

 thorax broad: depressed behind, coarsely punctate, the punctures grouped 

 so as to leave irregular, smooth, shiny, elevated areas, with sometimes a 

 smooth median line ; the thickly punctured spaces are most noticeable 

 where the dark parts of a thoracic M would naturally occur, and raised 

 areas are most marked at the sides and in 9 's, thoracic edge lightly sub- 

 angulate ; elytra stout and parallel, punctures as a whole finer than those 

 of the thorax, confused in the scutellar area and behind the humerus, the 

 remainder of the elytral surface striate, punctate, the third, fifth and 

 humeral intervals being the best developed ; very few of the thoracic or 

 elytral punctures have any dark colour in them, the elytra are also very 

 lightly transversely wrinkled, this being most noticeable anteriorly, and 

 the effect is to make the elytra a little less shiny than the thorax; the 

 scutellum is also rather long and more pointed than Jacobyi, the marginal 

 stria is well marked, lightly sinuate behind the humeral curve, lobe rather 

 abruptly narrowed in rear, with a row of strong punctures reaching well 

 forward of the shoulder ; below clothed with silvery pubescence, dark 

 rufous and yellow, with the epimera and sides of abdomen picked out in 

 the lighter colours ; legs rufous, with usual lighter spots. 



Inyo Mts., £ , ° ; Mojave, one 9 > Darwin, California, one £ ; Tucson, 

 Arizona, o* , $ ; St. George, Utah, five £ 's, one ? , all coll. by Wickham. 

 Type coll., Bowditch. 



The large size and shining yellow colour make this species easy to 

 recognize. The Darwin and Mojave specimens have the punctures of the 

 lobe less well defined. 



