158 GEO. H. HORN, M. T>. 



A. iieblllosa Lee. — Brownish pieeous, subopaque. Head strigose and sparsely 

 punctulate, darker in color. Antennce brownish testaceous. Thorax nearly twice 

 as wide as long, narrower at base, sides moderately arcuate, a slight sinuation 

 near the hind angles which are distinct but not prominent, disc slightly convex, 

 median line distinctly impressed, surface finely strigose and very sparsely punctu- 

 late. Elytra oblong-oval, the strife distinctly impressed and obsoletely punctulate, 

 intervals very slightly convex and finely alutaceous; color brownish pieeous with 

 a paler humeral space and subapieal fascia, as in sinuata. Body beneath smooth, 

 legs testaceous. Length .24 inch; 6 mm. 



Sexual characters as in lucidula. 



This species having paler elytra than sinuata, the humeral spot and 

 subapieal fascia do not show as plainly as in that. The subapieal fascia 

 is, however, more nearly complete and posterior to the humeral spot there 

 is sometimes an additional paler mark on the fifth interval. 



Occurs in Arizona extending to Cape San Lucas, Lower California. 



EUCJERUS Lee. 

 Men turn transverse, rapidly narrowing to the front, at middle rather deeply 

 emarginate without tooth, epilobes distinct, their apices acute. Basal membrane 

 of the ligula nearly filling the emargination. Ligula (proper) small, the apex 

 dilated, truncate and bisetose, paraglossse rather broad adherent to the ligula and 

 slightly prolonged beyond it. Labial palpi moderate in length, the terminal joint 

 fusiform, the tip membranous and subulate, the surface pubescent, the penultimate 

 joint bisetose in front. Maxillre slender, the inner lobe acute at tip and with an 

 acute tooth behind the tip, inner edge eiliate beginning a short distance behind 

 the tooth; outer lobe slender the terminal joint a little shorter. Maxillary palpi 

 moderate in length, the terminal joint as in the labial palpi. Mandibles not promi- 

 nent, acute at tip, scrobe well marked. Labrum moderately prominent, quadrate, 

 slightly transverse, the angles obtuse, quadrisetose in front. Antennas with the 

 pubescence covering the third joint and extending slightly on the second. 



I have dwelt in some detail on the mouth parts as these have not 

 heretofore been fully described. A figure of the mentum, ligula and 

 maxilla will be found in the preceding volume of these Transactions, 

 pi. viii, fig. 100. 



E. varieornis Lee. — This is the only species in our fauna. It is a small insect 

 (.12 — .14 inch; 3 — 3.5 mm.) pieeous in color with the elytra somewhat iridescent, 

 head darker, legs testaceous, antennas pieeous the outer five joints nearly white. 

 A figure in outline will be found in Transactions vol. ix, pi. iv, fig. 5. 

 Occurs in the southeastern Gulf States, and very rare. 



I'EMAGOBflCA Schmidt-Goebel. 



The name above given has been adopted by Chaudoir and others, 

 for what reason I am unable to state, as the name Rhombodera Reiche, 

 appears with date 1842, four years anterior to Pentagonica. 



The details of structure have already been sufficiently given by 

 Lacordaire, (Genera i, p. 133), and need no further reference here 

 except as to the form of the mandibles, which are more explanate 



