DESCRIPTIONS OF NEW SPECIES. 211 



537. A. ligata. Nigra nitida, breviter parce pubescens, elongata, 

 capite confertim pun eta to, pone oculos oblique augustato, et late rotun- 

 dato, prothorace latitudine longiore, antiee et postice profunde constricto, 

 dorso canaliculato, utrinque convexo, minus dense punctato, vitta dor- 

 Bali lsevi, lateribus subangulatis, angulis posticis paulo prouiinulis ; 

 elytris thorace latioribua apice rotundatis, profunde baud dense punc- 

 tatis; autennis tenuibus elougatis. Long. 8 — 12 mm. 

 a. Elytris vittis duabus obliquis testaceis, interiore' postice, exteriore 



antiee abbreviata ; antennis pedibus plus minusve testaceis. 



B. Elytris testaceis, sutura nigricante ; antennis pedibus plus minusve 



testaceis. 



Montana ; this species is closely allied to A. longicornis and 

 vinrla; but is distinguished from the former by less robust form, 

 and by the head being obliquely narrowed behind the eyes, and 

 from both by the prothorax being less densely punctured, more 

 shining, and more constricted, especially at the base ; the pubes- 

 cence in all three is very short and sparse. 



53S. .4. basalis. Nigra, capite tboraceque dense punctatis aureo-pi- 

 losis, hoc antiee posticeque constricto, lateribus obtuse tuberculatis, vel 

 potius bisinuatis, linea dorsali lsevi ; elytris tborace latioribus, elouga- 

 tis fere parallelis, apice subtruncatis, parce breviter albo-pubeseentibus, 

 punctatis, punctis postice subtilioribus, fascia basali rubra parcius 

 punctata, femoiibus anticis ferrugineis. Long. 10 mm. 



California ; Dr. Horn. A slender species, proportioned some- 

 what like A. longicornis, but with the elytra more flattened, and 

 more densely punctured. The head is gradually narrowed behind 

 the eyes, as usual, but is very distinctly constricted though not 

 strongly at base, showing thus an affinity with the Enc'yclops 

 tribe ; I should be disposed to place it in that tribe, next to 

 Leptalia, but the mouth is too long, and the front not sufficiently 

 vertical to warrant it. 



STRAXGAL1A Serv. emend. Lec. 



The poriferous system of the antenna? is contained in small 

 oval spaces, situated near the tip of the 6th and following joints, 

 the 1 1 tli joint is not appendiculate, and has but one sensitive 

 space each side, and not two, as in Typocerus ; but in species 5 

 and 6 there is in % an attempt at a double system of impressions 

 on the 6th and following joints. 



