134 Journal New York Entomological Society, lvoi. xvi. 



Nogales, Arizona, one male kindly given me by Mr. F. W. 

 Nunnenmacher. 



This little species is of the form of scabra, but with shorter ely- 

 tra, different punctuation and the fascia of pale hairs at middle. It 

 also resembles somewhat the specimens without basal fascia mentioned 

 above under the description of simulans, but these have also longer 

 elytra and a little different elytral sculpture. 



Hydnocera parviceps, new species. 



Elongate, black; intermediate tibiae and tarsi, anterior femora obliquely in apical 

 half, tibiae, tarsi and antennae, except last joint, pale. Head little wider than the 

 thorax in its widest part ; behind the eyes obliquely narrowing ; between the eyes 

 shallowly impressed ; front rather closely punctate, more sparsely on the occiput ; 

 pubescence moderate ; eyes moderately prominent ; antennal joints short an \ stout. 

 Thorax as long as wide ; near apex more strongly constricted than near base ; sides 

 rather broadly rounded, but scarcely dilated, parallel in basal third ; surface very 

 finely and densely punctate, intermixed with some more sparsely placed, larger punc- 

 tures which are absent from a narrow median space ; pubescence pale, sparser than 

 on the head and with longer, pale hairs intermixed. Elytra elongate, narrow, about 

 as wide as the head including the eyes, feebly narrowing to apex ; the latter dehiscent, 

 separately rounded and not serrate ; surface feebly convex at base, flattened und feebly 

 depressed a little before apex, the part behind the depression convex; punctuation 

 moderately coarse and rather close and almost uniform ; pubescence pale and sparse. 

 Abdomen about one third longer than the elytra, sparsely punctate and sparsely pu- 

 bescent with moderately long, pale hairs. Length 5 mm. 



Senator, Arizona. 



One female given me some years ago by Mr. Charles Palm. This 

 species has a form different from any Hydnocera known to me ; com- 

 pared with longicollis it is a little more robust, has slightly wider elytra 

 and thorax, and smaller head. 



Hydnocera nignna, new species. 



Form of tabida, but thorax wider and distinctly dilated at sides ; black, front 

 tibiae and tarsi, intermediate tarsi, antennae and palpi pale. Head shining, finely 

 and not densely punctate ; front impressed ; pubescence sparse. Thorax narrower 

 than the head ; sides very distinctly dilated below the subapical impression and 

 parallel below the dilated part ; surface finely rugose and not densely pubescent. 

 Elytra at base scarcely wider than the thorax in its widest part ; humeri oblique ; 

 sides gradually, but not strongly narrowing to apex ; the latter dehiscent, separately 

 rounded and not serrate ; before the apex depressed, below the depression convex ; 

 punctuation rather coarse and close. Under side and legs rather feebly pubescent. 

 Abdomen about one fourth longer than the elytra. Length 4 mm. 



Huachuca Mts. , Arizona. 



By its form this species has to be placed with tabida and longicollis, 

 from which the distinctly dilated sides of thorax and the dark legs 



