RHIPIDANDRUS. 691 
front tarsi and find that they are five-jointed, the basal joint being extremely short and 
connate with the second. ‘This can only be seen by placing the specimen in a selected 
attitude, because the tarsus is inserted almost at the extremity of the tibia, and the 
lower part of the latter forms an edge that conceals the extreme base of the tarsus. 
I have seen almost the same structure in C. walkeri, the insect for which the 
genus Cherostus was established; here, however, the two joints do not seem to be so 
perfectly connate. 
Other entomologists have been deceived by the apparently four-jointed feet and 
by the peculiar antenne of Rhipidandrus, Lacordaire having described the genus as 
Eutomus and placed it in the Scolytide. Mr. Arrow, too, informs us that the genus 
(under the name Heptaphylia) has been referred to the Lamellicornia by Friedenreich 
and de Borre. The position of Hledona and Rhipidandrus is, I think, clearly that of 
an aberrant group of Tenebrionide allied to the Bolitophagini. 
RHIPIDANDRUS. 
Rhipidandrus, Leconte, Class. Col. N. Amer. ed. 1, p. 236 (1862); ed. 2, p. 232 (1883); Arrow, 
Ann. & Mag. Nat. Hist. (7) xiv. p. 31 (1904). 
Eutomus, Lacordaire, Gen. Col. vii. p. 369 (1866). 
Heptaphylia, Friedenreich, Stett. ent. Zeit. 1883, p. 375. 
At present very few species are known of this genus, but as they occur in very 
different countries no doubt others will be discovered. 
1. Rhipidandrus mexicanus, sp. n. 
Piceus vel niger, antennis pedibusque testaceis ; prothorace densissime sat fortiter sculpturato, anterius leviter 
angustato; elytris sulcatis, interstitiis angustissimis acute elevatis. 
Long. 13-24 millim. 
Hab. Mexico, Vera Cruz (Sallé); British Honpvuras, Belize (Blancaneaux) ; 
GuATEMALA, Yzabal (Sal/é). 
The fifth joint of the antenne is large; the club consists of six broad hairy joints, 
very like those of Passalide, and capable of being closely adjusted as in that family of 
Coleoptera: the fifth joint shares in this development, inasmuch as it is longer on its 
inner aspect and admits of the base of the club being closely pressed to it. 
2. Rhipidandrus championi, sp. n. 
Ferrugineus, antennis pedibusque testaceis, prothorace densissime punctato; elytris sulcatis, interstitiis 
angustissimis acute elevatis. 
Long. 2 millim. 
Hab. Guatemata, El Reposo (Champion). 
Extremely close to &. mexicanus; rather narrower and more parallel, the sculpture 
a little finer, the lamine of the antennz slightly shorter, and the process separating 
the front coxe very slender. Two specimens. 
4T* 2 
