72 OTIORHYXCHID.^. 



[Horn. 



ing broader as it passes posteriorly, where it is bounded in front and behind 

 by a line of darker scales. I have two specimens before me of an entirely 

 uniform pale-brown color. 

 Occurs in Canada and New York. 



G. jncomptus, n. sp.* 



This species so closely resembles melanotJirix in form, size and color 

 that it is unnecessary to add any description. It differs only in the 

 characters given in the short table, so that if the description of melanotJirix 

 be repeated with those changes only, it will equally apply to this one. 



Occurs from San Francisco to Vancouver. 



ARAGNOMUS n. g. 



Rostrum shorter than the head, broader than long, flattened above, a 

 feeble transverse impression at base, tip feebly emarginate and with a 

 smooth crescentic space limited behind by a curved line. Scrobes sub- 

 lateral, not convergent above, cavernous, nearly attaining the eyes. An- 

 tennae scaly, moderate ; scape slightly arcuate, barely attaining the margin 

 of the thorax; funicle 7-jointed, nearly one-third longer than the scape, 

 first joint nearly equal to the two following, joints 2-7 obconical, gradually 

 decreasing in length ; club oval. Eyes rather small, round, not prominent. 

 Thorax cylindrical, sides feebly arcuate at middle only. Scutellum invisi- 

 ble. Elytra oval. Intercoxal process broad, truncate. Second segment 

 of abdomen as long as the two following, separated from the first by an 

 arcuate suture. Anterior tibiae feebly mucronate. Claws connate. 



This insect recalls in smaller size Paraptochus sellalus with less broad 

 elytra. The eyes are more distant from the thoracic margin than is seen 

 in any of the other genera of the group, and the head and rostrum rather 

 large when compared with the thorax. From Seidlitz's table this genus 

 appears to occupy a doubtful position. The frontal impression is sufficiently 

 distinct to ally it to Sciobms, etc., but the structure of the abdomen will 

 not warrant such position. The scrobes are moreover in such position that 

 it is impossible to say whether they should be called superior or lateral. 

 They are by no means lateral hi the manner of Trachypliloeus&nd. LiGheno- 

 pfiagus. 



A. griseus, n. sp. 



Form oval, robust, surface densely covered with cinereous scales, with 

 sparsely placed, erect, black setae, longer on the elytra. Head and ros- 

 trum longer than the thorax, a slight frontal line, surface sparsely and 

 deeply punctured, densely scaly, and with short erect hairs. Thorax 

 slightly broader than long, cylindrical, truncate at apex and base, sides 

 suddenly arcuate at middle, disc moderately convex, coarsely and regularly 



* No description of this species has until now appeared. I adopt the 

 specific name by which it is known in our cabinets. Mention of the species 

 first occurs in a catalogue of insects collected on the survey of the Pacif. R. R. 

 where it is called Trtwhyplceus, See Pacif. R. R. Rep., App. 1, p. 21. 



