SCHIZILLUS LATICEPS HORN 207 



Sterna. Prosternum not strongly punctate in front of the coxae, 

 rather transversely glabrous at middle. Process slightly produced, oval 

 between the coxae with the sides arcuately converging posteriorly to the 

 obtuse tip ; surface broadly and feebly impressed, rather densely punctate, 

 bead not distinct. Mesosternum arcuately declivous anteriorly, rather 

 deeply impressed in middle third, sides coarsely punctate. Metasternum 

 coarsely and irregularly rugose, sides sparsely punctate and rather smooth. 



Abdomen not strongly convex, slightly oblique to the sterna; surface 

 smooth, with widely scattered fine punctures on the first three segments ; 

 the punctures are slightly stronger on the apical half of the third segment ; 

 intercoxal process rugose ; fourth and fifth segments more or less densely 

 punctate, punctures small ; first suture almost straight, third and fourth 

 strongly arcuate, especially at the middle. 



Legs rather long and moderately slender, anterior pair a little stouter, 

 rather densely sculptured, femora punctate, tibiae' not coarsely muricato- 

 punctate ; tarsi stout, plantar grooves open, setae ferruginous ; terminal 

 joints of all the tarsi fringed with rather long and closely-placed ferru- 

 ginous setae. 



Male. Abdomen not strongly convex and slightly oblique to the 

 sterna. 



Female. Unknown. 



Measurements. Length, 20 mm.; width, 10 mm.; elytral length, 

 13 mm. 



Holotype, male, in my collection. Collected by Mr. O. N. Sanford. 



Type locality and habitat. Point Loma, San Diego, California. 



Lomae is very distinct from the other species. The mentum is 

 cordato-oval, slightly transverse, apex slightly emarginate, lobes arcuately 

 rounded into the broadly arcuate sides ; surface distinctly but not strongly 

 convex, closely punctured, punctures moderate in size. 



The scutellum in the Tenebrionidae as a rule is a very unreliable and 

 variable structure in any well defined species. In Schisillus it enters 

 between the elytra but a short distance. The scutellum is more or less 

 triangular, short and more transverse in laticeps, convexus and nunen- 

 macheri. In the type of lomae it is small and equilaterally triangular. 



The following table will serve to separate the species of the genus 

 Schizillus : 



Humeri obsolete, elytra broadly oval lomae, n. sp. 



Humeri more or less distinct, elytra oblong oval 1 



1. Third antennal joint very elongate, about equal in length to the four fol- 



lowing joints imnenmacheri, n. sp. 



-. Third joint shorter than the next two taken together 2 



2. Abdomen very finely and sparsely punctate - laticeps Lee. 



