ODYNERUS. 



325 



tion smooth or a little punctured, superiorly margined by (almost) 

 an edge, making an M or W reversed. 



Abdomen having its first segment more rounded, narrower 

 and a little longer; the second short and more strangulated at 

 base, to fit into the first, its hinder margin with a more simple 

 line of punctures ; the 2d segment as coarsely cribrose in the 

 middle as the edge of the 2d, but only in the middle. 



The arcuate yellow fascia of clypeus wider ; the maculae of 

 prothorax more approximate; tegulae ferruginous, with two yel- 

 low spots ; lateral spots of the 1st segment quite small or wanting ; 

 knees, tibiae, and tarsi ferruginous, spotted with yellow. Segments 

 3, 4 very narrowly margined, the 5th black. Wings cloudy. 



Bess. a. cliff. — This species is easy to distinguish by its not 

 punctured thorax, and elevated post-scutel. 



Sab. Lower California. Cape St. Lucas (T. Xantus). 



125. O. ILeilliicof iaifiUS Sauss. — Niger, nitidus, punctatus, 0. Penn- 

 sylvanico affiuis, at brevior; dense punctatus, metanoto et abd. primo 

 segmento grosse pnnctatis ; corpore albido-variegato ; macula mandi- 

 bularum, clypei, frontis et o'culofum, linea in scapo, maculis 2 prouoti, 

 2 metanoti, 2 subalaribus, post-scutello, tegulis abdominisque segmen- 

 torum limbo, secundi puncto utrinque tibiisque, albidis J . 



Odyn. Kennicotianus Sauss. Rev. de Zool. XXII, 1870, 104, 23. 



Total length, 8 mm. ; wing, G mm. 



A species allied to 0. pedestris. A little smaller ; forms the 

 same; the prothorax also finely angulate, but the thorax shorter; 

 the metathorax a little less retracted and more open, that is, its 

 concavity is a little wider. Abdomen less lengthened, first seg- 

 ment shorter, cupuliform, the 2d as wide as long, a little more 

 densely and finely punctured. The metathorax and the first 

 segment shorter, cribrose with large punctures, almost as in the 

 0. perennis. Scutel divided by a longitudinal groove. 



9 . Clypeus black. A spot at summit of mandibles, three dots 

 or an arcuate line on summit of clypeus, a spot on the front, 

 another in the sinus of the eyes and one behind their summit, a 

 line on the scape of the antennas, two spots on prothorax, one 

 under the wing, post-scutel, tegulae, and two spots on the summit 

 of metathorax, whitish; all the segment of the abdomen adorned 

 with a white border, wide and regular; the 2d ornamented with 



