PUERTO RICAN MORDELLISTENA RAY 397 



Antennae 1 mm long, reaching base of abdomen; segments 3 and 4 

 short, equal; 5-10 each slightly broader and as long as 3 and 4 to- 

 gether; 11 rounded, slightly longer than 10. Apical segment of max- 

 illary palpi enlarged, with the form of an isosceles triangle, rounded at 

 corners. Prothorax slightly broader than long (0.65 by 0.6 mm), sides 

 rounded, base arcuate, midbasal lobe short, but evenly rounded. 

 Scutellum small, triangular. Elytra two and one-half times as long 

 as broad (1.8 by 0.7 mm), sides gently acuminate, apices mdividually 

 rounded. Anterior tibiae enlarged, flattened, somewhat knifelike, 

 dorsal edge fringed with fine, flexible hairs; posterior tibiae with two 

 ridges, the anterior extending entirely across outer face; basitarsi and 

 second segment each with two ridges, extending halfway across outer 

 surface. Anal style more than three times as long as apical ventral 

 segment, slender, attenuate to apex. 



Tyjpe locality. — Bayamon, Puerto Rico. 



T^/pe.— Male, U.S.N.M. no. 51603. 



Remarks. — The type was collected at Bayamon on April 26, 1934, 

 by "Lesne et al."; a male paratype was collected at Maricao on July 

 2, 1917, by H. Morrison. 



MORDELLISTENA Y-NIGRUM, new species 



Figure 28, I 



The Y-shaped black spot on the region of the elytra surrounding the 

 scutellum adequately separates this species from other allied forms. 

 In a systematic arrangement it should be placed between leai and 

 lucidovirga. 



Length: 2.25 mm; including anal style, 3.1 mm. Elongate, sub- 

 parallel; derm black, except for the following castaneous areas: 

 Clypeus, basal half of elytra (enclosing a Y-shaped black spot sur- 

 rounding scutellum and extending posteriorly on suture to middle), 

 basal abdominal segment wholly, the remaining ventral segments 

 along ventral margins, posterior legs, four basal segments of antennae; 

 maxillary palpi and two anterior pairs of legs, whitish. Surface 

 densely covered with fine recumbent pubescence, partaking of ground 

 color, except on black areas, where it is golden. 



Antennae 1 mm long, slender, reaching posterior coxae; segments 3 

 and 4 equal; 5-10 each one-half longer but no broader than 4; 11 

 rounded, but slightly longer than 10. Apical segment of maxillary 

 palpi enlarged, form of a scalene triangle, sides straight, angles 

 rounded. Pronotum distinctly broader than long (0.7 by 0.6 mm), 

 sides rounded, basal angles obtuse, midbasal lobe distinct, rounded. 

 Scutellum small, rounded. Elytra more than twice as long as broad 

 (1.65 by 0.7 mm), sides gently rounded, apices individually curved. 

 Posterior tibiae with two oblique ridges, the anterior extending en- 



