206 MEMOIRS ON THE COLEOPTERA 



as written on the label. It does not seem to be very abundant 

 anywhere.* 



Group IV. 

 Subgenus Ligyrellus nov. 



The three species assignable to this subgeneric group of Ligyrus, 

 do not differ from the true Ligyrus in any other way than in having 

 no trace of the very constant anterior pit of the pronotum char- 

 acterizing that extensive group of species and in their different 

 geographic habitat, but, at the same time, these three species form 

 three sections baseable on the structure of the clypeal apex as 

 follows : 



Clypeus edentate and truncate at apex, the truncature a third as wide as 

 the distance between the eyes. Body subparallel, feebly inflated 

 posteriorly, convex, shining, piceo-rufous, slightly paler and only 

 moderately pubescent beneath; head small, coarsely, shallowly 

 punctato-rugose, smooth at base, the carina completely divided into 

 two slender transverse ridges about attaining the sides; clypeus of the 

 usual form, more finely and loosely rugulose; mentum convex, 

 punctate and setose throughout; mandibles as in Ligyrus; prothorax 

 scarcely more than one-half wider than long, the sides evenly con- 

 verging and evenly, distinctly arcuate from the very narrowly 

 rounded angles to the apex; base rather strongly lobed medially; 

 surface apically not modified; punctures rather strong, very sparse, 

 wanting along the middle basally; scutellum wider than long, tri- 

 angular, smooth; elytra a fifth longer than wide, a fifth wider than 

 the prothorax and more than twice as long, broadly, evenly rounded 

 at apex; punctures rather small, widely spaced in a sutural and four 

 discal double series, the external fine and feeble; wider subsutural and 

 sublateral intervals with sparse confused punctures, the others 

 impunctate for the most part, the punctures postero-laterad broadly 

 confused; pygidium strongly but shallowly, not very sparsely um- 

 bilicato-punctate throughout; hind tibiae rather slender, not as long 

 as the femora, the tarsi equal in length to the tibiae; prosternal process 

 bristling with setae throughout. Length (cf ) 13.7 mm.; width 8.0 



mm. Venezuela. [Scarabceus fossor Latr.] *fossor Latr. 



Clypeus bidenticulate 2 



2 Pronotum not definitely modified anteriorly, though sometimes with a 

 very shallow rounded impression at each side of the middle. Body 

 oblong, rather convex, stout, dilated posteriorly, shining, dark cas- 

 taneous, pale rufous and with moderate sternal vestiture beneath; 

 head small though larger than in fossor, the front deeply concave 



*Since this was written I have received a smaller specimen, said to have been col- 

 lected by Wickham in southern California; it otherwise exactly resembles the one 

 described above, except that the geminate series of the elytra are rather more im- 

 pressed, 



