106 BULLETIN 417, U. S. DEPARTMENT OF AGRICULTURE. 



CALOSOMA MORRISONII Horn. 



ORIGINAL DESCRIPTION. 



Black, moderately shining. Head moderately closely punctate, ' rugiilose at the 

 sides, mandibles transversely wrinkled. Thorax twice as wide as long, base and 

 apex nearly equal, sides strongly arcuate in front, oblique behind, hind angles very 

 obtuse, lateral margin narrow in front, more widely reflexed posteriorly, the basal 

 impressions moderately deep, apex feebly, base more distinctly emarginate, median 

 line distinct, surface moderately closely punctate and more rugulose at the sides 

 and along the base. Elytra oval, widest behind the middle in both sexes, humeri 

 distinct, surface rather shining, with about fifteen rows of rather fine not closely 

 placed punctures, the intervals with a single row of finer and more distinct punctures, 

 the fourth, eighth, twelfth, and submarginal intervals with a series of moderately 

 distant larger golden punctures. Prothorax beneath sparsely punctate, metathorax 

 at sides more coarsely, abdomen sparsely punctate at the sides. Length .72-. 82 inch, 

 18-20 mm. 



The male has three joints of the anterior tarsi spongy pubescent beneath. This 

 species from the evident golden elytra! spots must be associated with ealidum and 

 tepidum, than either of which it has much smoother elytral sculpture although resemb- 

 ling them in general form. It might be mistaken for a smooth variety of obsoletum, 

 but the elytra are more dilated, their sculpture smoother, and without the imbricated 

 appearance. The base of the thorax is distinctly bisinuate in obsoletum and simply 

 emarginate in the present species as well as in those with which it is associated. 



Collected by Mr. H. K. Morrison in Colorado. With it I associate his name as an 

 evidence of my appreciation of his industry and success in adding to a knowledge 

 of our fauna. 



EARLY RECORDS AND DISTRIBUTION OF THE SPECIES. 



This species was described by Horn in 1885 x from specimens that 

 were collected in Colorado by H. K. Morrison. Specimens that are 

 deposited in a few museum collections in the United States bear 

 locality labels from Colorado and southern California. It appears 

 not to be particularly common in any State, although the most have 

 been reported from Colorado. 



CALOSOMA TEPIDUM Lee. 



(Syn.: C. irregular e Walk.) 



ORIGINAL DESCRIPTION. 



Black, with head and thorax closely wrinkled, thorax very broad, narrowed at 

 the posterior end, sides much rounded, margin somewhat reflexed, with base lightly 

 bisinuate, marked on both sides, elytra extended slightly posteriorly, finely striate, 

 with spaces between the striae much corrugated, almost broken into granules, and 

 with bronze-colored pits in triple row. 



Length .75. 



Shorter than C. ealidum and differs in having elytra quite rough; it seems similar 

 to Callisthenes, and shows its likeness in antennae, 5th and 6th joints, glabrous margins, 

 pubescent at the base, with the glabrous part poorly defined, and 7th to 11th joints 

 equally pubescent, described in this species. 



Oregon. I have seen another specimen in the Collection of the Exploring Expe- 

 dition. 



This species was described by Le Conte in 1851. Mr. J. K. Lord 

 published in 1866 the description of a new species, Calosoma irregular e, 

 described by Walker, the habitat of which was not given and 

 compared it with C. ealidum, C. frigidum, and the Siberian C. denti- 

 colle. In 1871 Horn reduced this species to a synonym of C. tepidum. 

 There are no records at hand to show that C. irregulare is represented 

 in any of the public museums and experiment-station collections of 



1 Horn, G. H. Contributions to the Coleopterology of the United States. In Trans. Amer. Ent. Soc., 

 V. 12, p. 128-162, pi. 4-5, 1885. 



