1 84 MEMOIRS ON THE COLEOPTERA 



breviated, only a little more than one-half wider than long, the basal 

 angles still more broadly rounded, the punctures even sparser, 

 similarly irregular in distribution as is usual; scutellum similar; 

 elytra also similar in form and proportion in both sexes, but with the 

 sparse annular punctures deeper and more perforate and therefore 

 apparently finer, more close-set in the better defined series forming 

 the feeble costules; pygidium similar but more scabriculate along the 

 basal margin in the male but not in the female; anterior tibiae with 

 the fourth tooth distinct though small and similarly with an evident 

 tooth-like prominence between the second and third teeth, which is 

 wanting in relictus and others of that type. Length (cf 9 ) 19.8-20.0 

 mm.; width 10.6-11.3 mm - Mexico (near the city). [Ligyrus 



sallcei Bates] *sallei Bates 



9 Body narrower, elongate-oval, strongly convex, shining, blackish- 

 piceous, the elytra, under surface and legs castaneo-rufous, head 

 distinctly more than two-fifths as wide as the prothorax, the eyes 

 relatively much larger and more prominent than in sallei, separated 

 by but little more than twice their width; front with confused arcuate 

 rugulosity, the basal regions smooth; divided ridge forming two ob- 

 tuse transverse tubercles, the outer slopes of which do not attain the 

 sides; trapezoidal clypeus with the sides distinctly sinuate apically 

 and with concave, very feebly and loosely rugulose surface, the 

 apical teeth nearly as well separated as in sallei, the distance of each 

 from the lateral angle half their distance asunder; prothorax longer 

 than in any other species, distinctly less than one-half wider than 

 long, the sides converging and evenly arcuate from the rather distinct 

 and only moderately rounded basal angles to the apex; sculpture 

 as in all the other species; scutellum ogival, rather broad, minutely, 

 sparsely punctulate in about basal half; elytra about a fourth 

 longer than wide, feebly inflated posteriorly and a fifth or sixth 

 wider than the prothorax, circularly rounded in apical two- 

 fifths; sculpture as usual, but the annular punctures are smaller, 

 feebler and much sparser than in any other, the geminate series fine, 

 barely at all impressed and with the punctures well separated; 

 pygidium very convex, with strong sparse punctures in about basal 

 half, the nearly apical half being perfectly smooth; tibiae almost as 

 in sallei, the larger claw of the male not so truncate at tip but 

 obtusely rounded, symmetrically so with regard to the longitudinal 

 axis, the slender aciculate rarnus projecting beyond the tip, in pro- 

 longation of the lower margin; apex of the fourth joint prolonged 

 briefly and very obtusely over the basal part of the fifth and with its 

 surface closely strigilate, a character also observable in sallei and 

 propinquus, as well as relictus and others of that section. Length 

 (c?) 1 8. 2 mm.; width 9.2 mm.- Mexico (Cuernavaca, Morelos), 

 Wickham *aztecus n. sp. 



The species sallei, propinquus and aztecus are closely allied among 

 themselves, but the first may be known by the rather larger size 

 and more separated clypeal teeth, and aztecus by its narrower, 



