208 NEW SPECIES MELYRIDAE, CHRYSOMELIDAE AND TENEBRIONIDAE 



-. Abdomen very distinctly, rather closely punctured, punctures moderate in 



size convexus, n. sp. 



The following antennal differences may be noted : 



Third joint a little longer than the fourth, the latter relatively longer than in 



laticeps _....,. lomae 



Third joint about equal to the next four taken together, these being subequal 



in length and about a third longer than wide nunenmacheri 



Third joint about twice as long as wide, distinctly shorter than the next two 



taken together; fourth, fifth and sixth subequal in length laticeps 



Third joint distinctly twice as long as wide, fourth longer than the fifth convexus 



Euschides lecontei Horn. This species inhabits the valleys and foot- 

 hills of the southern San Joaquin Valley. To what altitude in the foot- 

 hills is not definitely known. Series are before me that were collected 

 near Los Angeles and at Bakersfield. There is a noticeable difference 

 between the extremes of the two series. In the Bakersfield specimens the 

 males are comparatively slender and quite parallel, the elytra are dis- 

 tinctly narrower than the pronotum ; in the female the elytra are broader 

 and distinctly wider than the pronotum, with the sides moderately arcuate ; 

 in both sexes the dorsum is less convex than in the Los Angeles speci- 

 mens. In the latter the males are less narrow and parallel, the elytra 

 being at least as wide as the pronotum, with the sides broadly and more 

 strongly arcuate than in the Bakersfield males ; in the females there is 

 often present a short costa between the margin and the second discal, 

 these costae are not strong and are usually obsolescent; both sexes are 

 more robust and the dorsum more convex. 



In both series the sculpturing is similar and the variations are analo- 

 gous in every way. The surface lustre is somewhat duller in the Bakers- 

 field specimens. The characters appertaining to the two series as men- 

 tioned above, gradate completely one into the other. The largest speci- 

 men mentioned by Casey measured 20 mm. 



In the collection of the California Academy of Sciences is a specimen, 

 as well as one in my own, that was collected in the Kings River Canyon, 

 California, both taken by Mr. Frank Daggett ; these two specimens are 

 giants as compared to the other specimens seen by me. They measure 

 as follows : Length, 24-25 mm. ; width, 10-10.3 mm. In these the discal 

 costae become obsolescent before becoming coalescent on the apical 

 declivity and there is no evidence of a third costa. The pronotum is 

 transverse, disk more convex and less deplanate at the sides, the central 

 area is smooth, sparsely punctate, punctures smaller, less strong, becoming 

 coarser laterally and on the deplanate area more or less punctato-rugose, 

 and the margin is less reflexed than in the two series mentioned above ; the 

 base is nearly arcuate, scarcely bisinuate; the head has a large cordate 

 depression. The legs are relatively stouter than in the Los Angeles and 



