304 NITIDULIDA. 
41. Carpophilus marginatus. 
Carpophilus marginatus, Er. in Germ. Zeitschr. iv. p. 262 +; Murray, Trans. Linn. Soc. xxiv. p. 390°; 
Horn, Trans. Am. Ent. Soc. vii. p. 279°. 
Hab. Norru America, Carolina! 2, Middle and Southern States ? °—GuatEMaALa, San 
Geronimo, Balheu (Champion). | 
I have no North-American specimens at my disposal to enable me to compare 
thoroughly all the minor structural characters with our Central-American individuals. 
EUMYSTROPS, gen. nov. 
Palpi graciles. Sulci antennarii parum convergentes. Pygidium ab elytris haud obtectum. 
Labrum very small, bilobed. Eyes large and globular. Basal joint of antenne but 
little dilated. Prosternal process rather slender, curved upwards towards the extremity. 
Middle coxe slightly separated. Metasternum rather short. Hind cox moderately 
separated; the abdominal lobe between them almost truncate, on each side with a 
divergent raised line extending to the hind margin ; second, third, and fourth segments 
short, together only about equal in length to the first segment. Pygidium entirely 
exposed. Legs short; the tarsi dilated. 
This genus is established for a small insect which I at first thought would prove to 
be a species of Haptoncus. It is not, however, by any means closely allied to that 
genus, and indeed its characters generally are nearer to those of our Mystrops hetero- 
cerus. As that insect has no trace of any antennary grooves, the two cannot be treated 
as very closely allied; and I therefore place Eumystrops between Carpophilus and 
Epurea, though I am extremely doubtful as to what may ultimately be considered its 
true position. 
1. Eumystrops centralis, sp.n. (Tab. IX. fig. 23.) 
Compactus, convexus, testaceus, subtiliter pubescens, sat nitidus, subtilius haud dense punctulatus. 
Long. 2 millim. 
Hab. Paxama, Volcan de Chiriqui 4000 to 6000 feet (Champion). 
Antenne short, joints 3-7 small and slender, the three terminal joints forming a 
moderately large, very compact club. Head very feebly punctate. ‘Thorax strongly 
transverse, very slightly emarginate in front, curved at the sides, but very little 
narrowed behind; the base straight, the hind angles very slightly projecting backwards, 
rectangular, the basal margin fine but distinct. Scutellum rather large, triangular. 
Elytra short and broad, their apices nearly straight behind. Pygidium very broad, very 
obsoletely punctate, almost smooth. Legs short. 
Two examples. 
