TAXONOMIC STUDY OF MORDELLIDAE — RAY 277 



TOMOXIA SERRICORNIS, new species 



FiGUBE 16, g 



This species is most closely allied to Komi Ray (1936b, p. 147) 

 but may adequately be separated from the latter member of the 

 genus by the more parallel-sided form, difference in color and pattern 

 of pubescence, the greater length of the intermediate tarsi and of 

 the outer tibial spur, and the shorter elytra. 



Length : 3.4 mm. ; including anal style, 4.1 mm. Robust, sides sub- 

 parallel; body fuscobrunneous, maxillary palpi and anterior legs 

 flavocastaneous. Surface densely covered with fine, recumbent, whit- 

 ish pubescence, uniformly covering derm, except on disk of elytra, 

 where it is irregularly disposed and not forming definite spots, except 

 for a postmedian, transverse arcuate band. 



Antennae 1.1 mm. long, reaching base of pronotum, segments 3 and 

 4 large, equal; 5 to 10 subequal, each much broader and longer than 

 4; 11 distinctly longer than 10, apex and sides rounded. Distal seg- 

 ment of maxillary palpi enlarged, ovate, broadest at middle, sides and 

 apex rounded, outer side greatly so (fig. 16, g). Pronotum distinctly 

 broader than long (1.4 by 1 mm.), apex and sides rounded, basal 

 angles obtuse, base arcuate, midbasal lobe short, truncate. Scutellum 

 broader than long, sides angular, apical angles obtuse. Elytra one and 

 seven-tenths times as long as broad (2.4 by 1.4 mm.), sides parallel to 

 within one-fourth of apex, broadly curved posteriorly, apices individ- 

 ually rounded. Intermediate tarsi longer than their tibiae ; penulti- 

 mate segment of anterior and intermediate tarsi simple. Tarsal claws 

 with two distinct teeth, and a large, thick, blunt, premedian eleva- 

 tion. Outer spur of posterior tibiae three and one-half times as long 

 as inner one. Anal style one-half longer than apical ventral segment 

 (0.7 by 0.48 mm.), stout, apex broadly truncate. 



Type locality. — Roxborough, Tobago. 



Type.—K single female, U.S.N.M. No. 52924, taken at the Archibald 

 Estate, Roxborough, Tobago, November 6, 1918 (H. Morrison). 



MORDELLOIDES, new genus 



This genus is allied to both Zeamordella Broun (1886, p. 847) and 

 Mordella Linnaeus (1758, p. 420). From the former it may be sepa- 

 rated by the angular insertion of the distal segment of the maxillary 

 palpi, the much longer length of the posterior legs, the thin, filiform 

 tarsi, and the much longer, acute anal style. From Mordella it may 

 be separated by the semicircular scutellum, the lengthy intermediate 

 tibiae, the angulate anterior angles of the pronotum, the single flat- 

 tened spur of the posterior tibiae, and the truncate apex of the last 

 ventral segment. From Reynoldsiella Ray (1930, p. 184), to which 



