1(J1 TI1K CANADIAN KNTll.MilI.IHJIST. 



This species is closely allied structurally to Uikei, and should follow 

 it in our lists. In Ulkei the upper surface is virtually glabrous throughout, 

 and the etytra are very finely or indistinctly punctate. In Ulkei., stigmatica 

 and semipiibescens there is a longitudinally sulcate interocular flattened 

 carina, which is not obvious in the other species of the genus. In the two 

 first-named species this carina is nearly parallel and more deeply grooved; 

 in semipiibescens it is broader behind and less prominent, with a finer 

 median groove, and is more deeply, transversely impressed behind the 

 antennal tubercles. In semipiibescens the elytral pubescence consists of a 

 single system of erect hairs, which are almost perfectly uniform in length 

 except for some irregularity near the apex. In al! our other species except 

 Ulkei (distinct a is not before me) the elytral vestiture is dual, consisting of 

 recumbent pubescence, with intermixed longer erect hairs. 



Metaleptus gracilior, n. sp. — Slender, parallel ; red, pronotum with 

 two discal spots, elytra with a small umbonal spot, and the apical third or 

 half black ; knees, tibia? and tarsi black. Pubescence rather sparse, fine, 

 short, erect, longer on the disk of the pronotum and the base of the elytra. 

 Antennae ( £ ) very slender, nearly twice as long as the body ; ( 9 ) less 

 slender, not reaching the elytral apex, outer joints shorter, wider and sub- 

 serrate. Prothorax a little wider than long, sides with a prominent 

 tubercle just behind the middle, disk densely punctate. Elytra slightly 

 wider than the prothorax, and about 2 l /i times as long as wide, densely 

 but not coarsely punctate, the punctures becoming finer apically, each 

 with two fine but evident subcostiform lines ; apices broadly, separately 

 rounded or feebly truncate. Prosternal process strongly convex ; meta- 

 sternum protuberant between the coxae. Legs very slender ; the hind 

 thighs sublinear, longer in the male, but passing the elytral apex- in both 

 sexes. 



Length, 9^-14 mm. 



This species was taken in some numbers in the Baboquivaria Mts. in 

 Southern Arizona by Prof. Snow. 



There is some variation in the extent of the black markings ; the 

 thoracic spots may unite, the humeral spot is sometimes lacking, the elytral 

 apical area extends farther forward at the suture than at the sides, and in 

 one example unites with the humeral spot, leaving the base narrowly and 

 a portion of the side margin pale. 



Gracilior is very distinct from Batesii, the latter being a broader 

 insect, the body black throughout except narrow basal and lateral margins 



