374 Dr. J. L. Leconte on Goleoptera 



toto transvorsim rugoso, basi punctato ; elytris elongato-ovalibus, 

 convexis, thorace baud latioribus, striis subtilibus subpunctatis, 

 interstitiis vage impressis, parce subtiliter rugosis, basi virescenti- 

 bus, stria scutellari distincta puncto magno notata. 

 Long. 18 millim., lat. 5-5 millim. 



I have seen but one badly preserved female of this most 

 interesting addition to the North-American fauna. It evi- 

 dently belongs to a different genus from any mentioned by 

 Mr. Putzeys in his Synopsis of Broscini (Stettin. Ent. Zeitung, 

 1868, p. 306) ; but the palpi are wanting, and only a few- 

 joints of the antennae and tarsi remain. I am therefore 

 unable to characterize the genus any further than to say that 

 it resembles somewhat in form PromecoderiiSj and that its 

 place in the tabular ari'angement of Mr. Putzeys would be in 

 [aa, gg)y probably next to Miscodera and Broscosoma. The 

 mentum-tooth is moderately large, slightly rounded, and is 

 scarcely perceptibly impressed at tip ; the temporal suture is 

 not visible. The first dorsal stria commences on the peduncle 

 of the elytra, as in Miscodera ; the scutellar stria is connected 

 at the base with the second stria, and is marked at its hinder 

 end with a large puncture. The first four joints of the an- 

 tennse are glabrous. 



It gives me much pleasure to dedicate this very beautiful 

 species to the enterprising explorers to whose energy and per- 

 severance during the many privations to which travellers in 

 North-western America are exposed we owe the valuable 

 collection which forms the subject of the present memoir. 



Patrobus. 

 y Patrobus falcratus. 



Niger, nitidus, depressiis ; capite profunde biimpresso ; prothorace 

 quadrato-cordato, latitudino paulo breviore, postice modice angu- 

 stato, lateribua rotuiidatis, anguste reflexis, versiis basin late 

 eimiatis, angulis posticis rectis, basi medio late emarginato, utrin- 

 que vix obliquo, foveis basalibus latis profundis, dense punctulatis, 

 carina angidari vix distincta, linea dorsali profunda ; elytris 

 elongatis, parallelis, striis baud profundis vix punctulatis, 3'* 

 punctis 3 dorsalibus notata ; trocbanteribus posticis elongatis, 

 maris acutis. 



Long. 11-5 millim. 



One pair. In the male the hind trochanters are about half 

 as long as the thighs, and nearly acute at tip ; in the female 

 scarcely shorter, and rounded at the tip. 



This species belongs to a group thus far found only in 

 Western North America, distinguished by the great length of 

 the hind trochanters. In the depressed form of the body and 



