SCHIZILLUS LATICEPS HORN 201 



beetle were very abundant in the nests of wood rats. Dulzurae is noc- 

 turnal in habits. Having secured but one living specimen in eleven years 

 does not speak well for my ability as a collector ; unfortunately I was more 

 interested in farming at that time than in worrying over beetles. 



In appearance dulzurae resembles pectoralis, which is a larger species ; 

 next in order it resembles muricata Lee., which is a more or less shining 

 species, a moderate series of which is before me. In muricata the 

 propleura are distinctly punctate, the abdomen is quite coarsely and much 

 more abundantly punctate and the parapleura are more densely and 

 strongly punctured. The pronotum of muricata is impressed and 

 punctate-granulate along the side margins. Pectoralis is more elongate 

 and more strongly sculptured beneath. The apparent sequence of species 

 should be spiculifera, pectoralis, muricata and dulzurae; then follow 

 angularis, asperata, variolosa and seriata. Infausta and utahensis I have 

 not seen. This arrangement agrees with that given in Henshaw's List. 



Schizillus Horn. 



In 1874, Dr. Geo. H. Horn created the above genus for laticeps, a 

 member of the Tribe Cryptoglossini, collected on the Mohave Desert, 

 California, by Mr. Crotch. In 1913, Mr. J. R. Slevin took a considerable 

 series at Hesperia, California, which are in the collection of the California 

 Academy of Sciences. 



In 1908, Mr. F. W. Nunenmacher took three interesting specimens 

 at Goldfield, Nevada. Two of these look like a modified laticeps, the other 

 somewhat resembles the smooth Cryptoglossa laevis. For more than 

 twenty-eight years I have had a specimen that was unique as far as my 

 collection was concerned. During this time it was labeled laticeps, but it 

 undoubtedly represents a new species. From the material before me it is 

 evident that three new species are to be recognized. 



The salient generic characters of Schizillus are the completely divided 

 eyes, the transverse mentum, the broader genae and the front is hemi- 

 hexagonal. The antennae are eleven-jointed, first joint stout and 

 invisible from above, the terminal joint oval and smaller than the pre- 

 ceding. In regard to the size of the eleventh joint, I must differ from 

 Dr. Horn, for it is smaller than the preceding. The broad head is a 

 striking character when compared with our Centriopterae. Dr. Horn's 

 description of the type species may be modified as follows : 



Schizillus laticeps Horn. Form elongate oblong-oval and moderately 

 robust. Color black and subopaque. 



Head broad, front hemi-hexagonal and moderately convex, sparsely 

 punctured, very broadly impressed between the eyes along the frontal 



