314 MEMOIRS ON THE COLEOPTERA 



of the female with three blunt teeth, the two lower closer than the 

 two upper; antennal club slightly shorter than the entire stem. 

 Length (9 ) 12.0 mm.; width 6.7 mm. Honduras (San Pedro Sula). 



*longula n. sp. 



10 Form moderately stout, piceous, moderately shining; surface above 

 and beneath with short inconspicuous pubescence, the upper surface 

 luteous, the pronotum with a large median piceous space, the humeral 

 and subapical umbones of the elytra tipped with piceous, the suture 

 and apical margin narrowly piceous, the scutellum black and 

 smooth; head coarsely and densely punctured and with moderately 

 long hair, the clypeus slightly wider than long, somewhat broader in 

 front, the angles rounded, the apex moderately reflexed and slightly 

 emarginate at the middle; antennal club (9 ) subequal in length to 

 the stem; prothorax oval, narrowed in front, slightly wider than long, 

 the sides moderately arcuate; base not narrower than the middle, 

 the basal margin regularly arcuate; surface coarsely and densely 

 punctured and with short erect yellowish hairs; elytra moderately 

 convex, very vaguely bicostate, irregularly and sparsely punctate; 

 under surface piceous, shining, sparsely hairy, the tibiae very feebly 

 nmbriate, the anterior acutely tridentate, the teeth rather long and 

 equidistant; pygidium concentrically strigose, smooth near the tip; 

 mesosternal button round, hairy. Length (9) 13-5 mm - Kansas. 

 A single example aestuosa Horn 



This group appears to be fairly homogeneous as above consti- 

 tuted, although longula and csstuosa possess some aberrant char- 

 acters relating to the form of the scutellum, sculpture of the elytra 

 and development of the elytral costae, which seem to be much feebler 

 in csstuosa than in any of the others; the latter species is unknown 

 to me and the above description is drawn directly from that of Dr. 

 Horn (Pr. Am. Phil. Soc., 1880, p. 400). The species of the kerni 

 section, though having a marked community of habitus, are dis- 

 tinguished by many structural characters of importance, irrespec- 

 tive of coloration, and they have been too hastily united under the 

 name kerni. It should also be said, in this connection, that color, 

 when radical and constant, as it is among these forms, is as im- 

 portant a structural character as any modification of special organs. 



Group IV. 

 Subgenus Euphorhipis nov. 



In this group the body is small or very moderate in size, not 

 rhombiform and without such laterally prominent elytral humeri 

 as in the preceding group; the elytral costae, also, are generally 

 very much feebler, resembling more nearly the biguttata group in 



