200 GEO, n. HORN, M. D. 



nearly twico as wide as long, base broader tban the length and not fmarginatef 

 sides moderately arcuate and converging posteriorly, margin very narrow, not 

 reflexed, hind angles obtuse, basal impressions moderately deep, median line 

 very fine; surface extremely finely transversely wrinkled, and with very few 

 punctures near the basal margin. Elytra obovate, humeri broadly rounded, 

 sides moderately arcuate, disc moderately convex, obsoletely substriatc, striae 

 very indistinctly punctured, intervals 4 — 8 — 12 with very indistinct larger 

 punctures. Body beneath black, shining, smooth or obsoletely transversely 

 wrinkled. Length .74 inch ; 19 mm. 



Male. — Anterior tarsi with three joints dilated and pubescent, fourth joint 

 glabrous. 



This species should be referred to the same group with triste, etc., 

 (Group iv., Lee. Free. Acad., 18G2, p. 53), from all of the species of 

 which it differs by the thorax being narrowed behind and the base 

 narrower than the apex; the elytra are also obovate in the present 

 species and oblong oval in all the others. The body in Falmeri is 

 feebly winged, and in the others (except IJa^deni) the wings are fully 

 developed. In the latter species the elytra are connate, and I have 

 been unable to detect traces of wings. 



Numerous specimens were collected on Guadalupe Island by Dr. 

 Edward Palmer, to whom I take great pleasure in dedicating it. 

 Specimens were sent by me to my friend M. Aug. Salle of Paris, who 

 informs me that there is nothing in the fauna of Mexico with which 

 it may be compared. 

 ^ CCELOTAXIS, n. g. 



Mentum small, trapezoidal, emarginate in front, ligula exposed. 

 Maxillary palpi moderately long, last joint elongate triangular, rounded 

 at tip. Labrum small, moderately prominent, clypeus emarginate at 

 middle. Antennae nearly as long as the head and thorax, third joint 

 longer than the fourth. Anterior tibiae truncate at tip, outer angle 

 not prolonged, outer edge finely spinulose; tarsi nearly as long as 

 the tibia, first joint prolonged beneath the second and partially or 

 entirely concealing it. Abdominal segments entirely corneous, inter- 

 coxal process narrow, triangular. Metasternum short, body apterous. 

 Margins fimbriate. 



The affinities of this genus are with Com'ontin and its allies, com- 

 bining especially the characters of that genus and Coehis. The differ- 

 ences among the genera of Coniontini may be expressed in the follow- 

 ing manner : 



Anterior tibise simple I. 



Anterior tibiro with outer angle prolonged 2. 



1. — Antennae nearly as long as head and thorax; third joint long 8. 



Antennae very short; third joint not longer than the second 4. 



3. — Anterior tarsi slender, firstjoiut moderately longand simple..C'oiiionlis. 

 Anterior tarsi stouter, first joint prolonged beneath the second..Coclot»xis. 



