306 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 87 



0.37 mm.), sides rounded, base arcuate, midbasal lobe short, rounded. 

 Scutellum subangulate, base straight, sides convex, very obtusely 

 angulate, apical angle acute. Elytra twice as long as broad (1.02 by 

 0.53 mm.), sides attenuate and narrowing from basal third to apex, 

 apices broadly, individually rounded. Intermediate tibiae and tarsi 

 subequal in length; antepenultimate segment of anterior and inter- 

 mediate tarsi short, slightly broadened, penultimate segment dilated, 

 excavate beneath. Posterior tibiae with three subequal, oblique 

 ridges extending halfway across outer surface; basitarsi with three, 

 second segment with two oblique ridges, all extending halfway across 

 outer surface. Tarsal claws with three distinct, acute teeth. Outer 

 spur of posterior tibiae twice as long as inner one. Anal style three 

 times as long as apical ventral segment (0.5 by 0.16 mm.), moderately 

 robust, attenuate to apex. 



Type locality. — La Ceiba, Honduras. 



Type. — A unique male, U.S.N.M. No. 52920, collected on August 

 23, 1916, by F. J. Dyer. 



MORDELLISTENA BOSENI, new species 



FiGUBEs 16, i; 18, I 



This species bears close resemblance to both in-fima LeConte (1863a, 

 p. 49) and tiai^a Ray (1936a, p. 127), but may easily be separated 

 from either of these members of the genus by the black, enclosed area 

 of pubescence on the elytra, the bicolored antennae and legs, the 

 larger size, the larger number of comblike ridges on the posterior 

 tibiae and tarsi, the larger size, and the greater length of the fourth 

 antennal segment. 



Length: 3.3 mm.; including anal style, 4.55 mm. Form narrow, 

 elongate, sides subparallel, narrowing from apical fourth of elytra, 

 broadest near base of pronotum. Derm piceous black, apical mar- 

 gins of abdominal segments a shining, castaneous color, basal four 

 segments of antennae, mouth parts, anterior legs, and spurs of pos- 

 terior tibiae, flavocastaneous. Body densely covered with fine, re- 

 cumbent pubescence, a distinct yellowish-greenish white, condensed 

 on elytra to form the following fasciae: a broad humeral area curv- 

 ing posteromesad and reaching suture; a narrow line along base, 

 embracing scutellum and continuing along entire length of suture; 

 an irregular, transverse, postmedian band broadening laterally and 

 extending along lateral margins to reach both humeral area and an 

 apical fascia ; apical sixth of elytra, longest basally near suture, pubes- 

 cence between these areas consisting chiefly of dark, fuscopiceous 

 hairs. 



Antennae 1.2 mm. long, reaching posterior coxae; segment 4 one- 

 half longer than 3; 5-10 each one-third longer and considerably 



