ART. 2 BOLIVIAN BEETLES OF THE FAMILY CLERIDAE CHAPIN 9 



punctures, the intervals on the disk more than the width of a puncture 

 and finely punctulate, puncture rows becoming confused beyond the 

 apical fifth, first row (from suture) somewhat irregular. Pubescence 

 sparse, gray, depressed. Underparts highly polished, very finely and 

 very sparsely punctured. Length: 4-6 mm. Locality: Cavinas. 



Type and fifteen paratypes. — Cat. No. 29361, U.S.N.M. 



This species agrees rather well with the description of the type of 

 the genus except for color. However, it appears to be quite a different 

 insect. 



Genus ICHNEA Castelnau, 1836 



15. ICHNEA SERICEA (Klug) 



Enoplium sericeiim Klug, 1842, Clerii, p. 373, pi. 2, fig. 16. 



Apparently a common species. Forty-four specimens were taken 

 at Tumupasa, four at Cavinas, and one at Rurrenabaque. The spec- 

 imens are remarkably alike in all respects except size. Size variation 

 is from 7 mm. to 9 mm. 



16. ICHNEA MARGINELLA (Klug) 



Enoplium marginellum Klug, 1842, Clerii, p. 376. 



A single specimen was taken at Yvon. It agrees with King's de- 

 scription in all points except the color of the scutellum, which is dark 

 in this case. The thoracic ratio is 24-23. 



17. ICHNEA ROSEICOLLIS Kuwert 



Ichnea roseicollis Kuwert, 1894, Ann. Soc. Ent. Belg., vol. 38, p. 9. 



Somewhat resembles the preceding but is separated from it easily 

 by the thoracic ratio (23-26). The amount of dark color on the 

 pronotum varies quite considerably, in two specimens examined it is 

 almost lacking. The length of the smallest specimen in the Mulford 

 collection is 6.5 mm., that of the largest, 8 mm. Six specimens of 

 this species were obtained at Tumpasa. 



18. ICHNEA HUMERALIS, var. IRRITA Wolcott 



Ichnea humeralis, var. irrita Wolcott, 1912, Psyche, vol. 19, p. 76, pi. 7, fig. 4. 



Two specimens, both of which I refer to this species, were taken by 

 the expedition. One from Cachuela Esperanza is but 5.5 mm. long, 

 the other is from Cavinas and measures 9 mm. Except for size 

 there is nothing to separate the two. Though the lateral margin is 

 pale for but a short distance behind the humeral angle, they compare 

 so favorably with a specimen of irrita Wolcott from the type series 

 that I have no hesitation in so identifying them. 



19. ICHNEA STRIATICOLLIS Kuwert 



Ichnea striaticollis Kuwert, 1894, Ann. Soc. Ent. Belg., vol. 38, p. 11. 



This species resembles strongly a lycid of the genus Calopteron 

 and is more properly a member of the genus Ichnea than any of 



