THE GENUS CALOSOMA. 75 



EARLY RECORDS AND DISTRIBUTION OF THE SPECIES. 



This species was described by A. Chevrolat in 1834, the type 

 specimen being taken in southern California. The description refers 

 to 14 ribs or elevations on the elytra. A careful examination was 

 made of the specimens in the LeConte collection in the Museum of 

 Comparative Zoology, Cambridge, Mass., and 16 elevations were 

 noted in each case. There has been some confusion between Calo- 

 soma angulatum Che v. and Calosoma angulatum Lee, but the latter 

 name was changed to prominens by LeConte. Calosoma angulatum 

 Chev. has been taken in Arizona, California, and Texas. There is 

 also a record from Mexico where it probably occurs in many localities. 



BIBLIOGRAPHY. 



1834. Chevrolat, A. Coleop teres du Mexique. vii p., 211 1. 1834. Strasbourg. 

 1881-1884. Bates, H.W. BiologiaCentrali-Americana, Insecta. Coleoptera, v.l, pt. 

 1, 316 pp., 13 pi. 



Pages 21 and 262, pi. 2, fig. 12. Habitat notes in several localities of Mexico. "A closely allied but 

 sufficiently distinct species ( C. angulicolle Chaud.) occurs near Santa Marta, Columbia." 



CALOSOMA PEREGRINATOR Guer. 



(Syn. : C. carbonatum Lee.) 



ORIGINAL DESCRIPTION. 



[Translation.] 



Body wholly black, almost entirely dull on the dorsal surface, a little shining on the 

 ventral side. Head small, very heavily granulated with an oblique dimple in front, 

 near the insertion of the antennae. Thorax transverse, truncate, nearly straight to its 

 two extremities, angular at each side in the middle, with the space between the lateral 

 angle and the anterior margin rounded, with the space between the lateral angle and 

 the inferior margin rounded; and the space between this same angle and the lower 

 margin cut off straight. Its disc finely granulate, with the edges more heavily 

 wrinkled and a feeble longitudinal line sunken in the middle. Shield small, tri- 

 angular. Elytra very much broader than the thorax at their base, elongate, rounded 

 anteriorly and posteriorly, nearly parallel in the middle, heavily margined, presenting 

 some 14 or 15 lines of small sunken dots, gradually disappearing towards the posterior 

 extremity of the elytra, and three series of distant dots, scarcely visible, without the 

 aid of the lens. Underside of the body and the feet nearly smooth; some large sunken 

 dots on the lateral sides of the metathorax and the first abdominal segment, the follow- 

 ing very finely striate longitudinally to the middle. — L. 0,026; 1. 0,011. 



This species is distinguished from all those which have been described by M. Dejean 

 by reason of its thorax of angular margins. It approaches the character of C. angu- 

 latum of M. Chevrolat (Col. du Mex., fasc, 2 mars 1843). But with this latter the elytra 

 have each fourteen elevations. 



EARLY RECORDS OF THE SPECIES. 



This species was described by M. Guerin Meneville, in 1S44, from 

 specimens collected in Mexico. He erroneously reduced C, prom inens 

 Leo. to a synonym of this species. In 1863 LeConte*described a new 

 species as C. carbonatum, but this was recognized as a synonym of ( \ 

 peregrinator Guer. by G. H. Horn, in 1SS3, and was so published by Mr. 

 H. W. Bates during the following year. 



The writers have studied the descriptions ami compared labeled 

 specimens and have reached the same conclusion. 



