62. 



Antennas longer, setaceous; ferruginous brown, head darker, more feebly punctured 

 at the middle prothorax longer than wide 1. longicolle. H. ?p. 



Antennas filiform, outer joints less elongate; prothorax not longer than wide, more 

 suddenly narrowed behind with more divergent angles: elytra fuscous, base paler. . . 2. 



2. Prothorax more convex and less finely punctured 2. attlericanu.nl. 



Prothorax less convex and more finely punctured 3. meXiCanum. 



1. longicoll. , Lee. (new species) 5. J mm. Tex. Cal. 



2. atnericanum, Dej. Spec. V, 298—5 mm. Lo. 



3. mexicanum, Chaud. Bull. Mosc. 1862. IV, 314. — 4. 5 mm. Ariz. Mex. 



Zupltium longicolle, n. sp. Depressed, dull ferruginous, finely 

 pubescent, head somwhat dusky, nearly smooth, prolonged behind the eyes, 



hind angles strongly rounded, base truncate at the middle: prothorax a 

 little longer than wide, broadest near the apex, which is oblique each side 

 and truncate at tip, fitting to the small neck: front angles rounded, sides 

 oblique, slightly rounded, sinuate near the base which is about half as wide 

 as the widest part, hind angles rectangular prominent: disc distinctly, net 

 densely punctured, dorsal line well impressed, basal impressions long. 

 Elytra oblong-elongate, humeri broadly rounded; apex truncate, outer 

 angles rounded; striae very feeble, interspaces dense!)- and finely punctured. 

 Antennae setaceous, two-thirds as long as the body: 1st. joint nearly as 

 long as the head: 2nd. joint half as long as the 3rd., which is slightly 

 longer than the 4th: 4 — 1 1 equal, about three times longer than their 

 width. Abdomen and legs yellowish. Length 5. 5 mm. y.ll.Leconte, 



San Joaquin Co., Cal.: Mr. Bluethner; Texas, Bdfrage. Differs from the other 

 two species by longer and thinner antennae and more elongate prothorax. 



DIAPHORUS, Dej. 



Antennae slender, joints cylindrical, 2-3 shorter than the following ones; prothorax 

 truncate at base, angles basal 2. 



Antennae stouter, joints oval, 2-10 equal in length: prothorax pedunculate at 



base, angles near but not at the base, THALPIUS, Lee 3. 



2. Fuscoq^iceous, elytra deeply striate, interspaces narrow: antennae, palpi and legs 



ferruginous, joints 5 — n of former pale testaceous 1. LeCOntei. 



Ferruginous elytra finely striate, interspaces wide, antennae, palpi and legs 



yellowish 2. tenukollis. 



3. Joints of antennae 4 — 10 oblong 4. 



Joints of antennae 4 — 10 square with rounded angles: piceous or fuscous: 



antennae, palpi and legs yellow 3. pygm&SU,S. 



4. Prothorax narrower and more convex: ferruginous, elytra with a dark sutural 



cloud behind the middle £, 



Prothorax wider and less convex: uniform ferruginous 6.rufuluS. 



5. Elytral interspaces flat, confused punctured 4, Homii. 



Elytral interspaces convex, sparsely punctured 5, dorsalis. 



