138 MEMOIRS ON THE COLEOPTERA 



evident; integuments very strongly micro-reticulate, obscuring the mod- 

 erate and rather shallow punctures, the elytra smoother, the fine con- 

 fused punctuation more evident though very shallow; head nearly as long 

 as wide, not at all constricted at base, evenly convex, convexly declivous 

 anteriorly and narrowed to the truncate apex, without trace of epistoma, 

 the antennae inserted at the sides before the eyes, the base not concealed 

 from above, rufous, not extending quite to the thoracic base, the basal joint 

 moderately thick, barely longer than wide, second as long as the next two, 

 fifth slightly larger than any one of three to eight; club about as thick as 

 the basal joint, the eleventh joint not quite as long as the two preceding; 

 eyes rather small, not very prominent, well in advance of the base, moder- 

 ately faceted and minutely setulose; prothorax distinctly elongated, paral- 

 lel, somewhat wider than the head but much narrower than any part of 

 the elytra, the sides feebly arcuate, the angles obtuse and rounded, the 

 basal rather broadly; scutellum small, short, twice as wide as long; elytra 

 parallel, with evenly and feebly arcuate sides and arcuato-truncate apex, 

 very nearly twice as long as wide; pygidium transverse, feebly punctate 

 and reticulate; abdomen slightly shining, rather closely punctulate; 

 tarsi slender, cylindric, plainly 5-jointed, the basal joint very short. 

 Length 0.9-1.2 mm.; width 0.25-0.3 mm. Colorado. Levette collec- 

 tion and also taken by Mr. Schwarz. 



One of the three examples at hand has the elytra much shorter 

 than the other two, not quite three-fourths longer than wide; in 

 this specimen the pygidium is less fully exposed than in the two 

 more slender examples. In the Cucujidae at large, the elytra are 

 more elongate in the female than in the male, but in the latter sex 

 the pygidium is usually more exposed than in the female. The short 

 basal joint of the hind tarsi is at least not evident in this example 

 with shorter elytra, so it is probably the male; its general coloration 

 is sometimes pale, probably from immaturity. 



In Hypocoprus quadricollis, Reitter describes the prothorax as 

 being no longer than wide. In lathridioides Mots., the form is 

 narrower and more slender than in quadricollis, with the prothorax 

 longer than wide but only just visibly narrower than the base of the 

 elytra, the entire outline being more parallel. In tennis the outline 

 is slender, the prothorax much elongated and very distinctly nar- 

 rower than any part of the elytra in both sexes. Although this or 

 some allied form now stands in our lists under the r,ame lathri- 

 dioides Mots., it is to be noted that no locality other than the 

 Armenian region and the Caucasus has been published in the 

 European literature for lathridioides, and none other than southern 

 Europe for quadricollis; that either of these should suddenly appear 



