REVISION OF ELEODIINI BLAISDELL. 423 



Habitat. — California (Presidio sand hills, San Francisco, June; 

 San Mateo County, at Holy Cross Cemetery; Alameda County). 



Number of specimens studied, 8. 



Type in Colonel Casey's collection. 



Type-locality. — San Francisco, Cal. 



Salient type -characters. — Head transverse and moderate in size; 

 antennae rather short and robust, third joint very slightly longer than 

 the next two together, fourth less than twice as long as wide. 



Protlwrax just visibly wider than long, apex truncate and equal 

 in width to the base which is subtruncate; sides broadly arcuate 

 anteriorly, convergent and nearly straight in basal half, basal angles 

 obtuse and not at all prominent; disc moderately convex, very finely 

 and sparsely punctate. 



Elytra widest behind the middle, humeri not rounded nor promi- 

 nent; apex acute but not greatly prolonged; disc finely but distinctly 

 and very sparsely punctate, the punctures not asperate and without 

 trace of order throughout (Casey). 



DiugnoHtic characters. — A local race of gigantea, from which it 

 differs in its " smaller size, less attenuate form, wider epipleurse, less 

 convex pronotum, less arcuate sides of the prothorax, and shorter 

 elytra " (Casey). 



From longicoUis it is recognized by having the " prothorax more 

 anteriorly dilated, much shorter and rather more robust antennas 

 and coarser punctuation'' (Casey). 



It is undoubtedly more closely allied to gentilis than to any other 

 form belonging to the jjresent subgenus. It is also very variable as 

 indicated by Casey's two specimens and the small series before me. 

 The male, as directly compared with the LeContian co-type of 

 gentilis^ has the same form, but is more polished, has finer punctu- 

 ation, more slender legs, especially the tibia^, and is altogether a more 

 graceful insect. 



Unfortunately the female of gentilis has not been recognized. Two 

 females of estriata now before me are the homomorphic companions 

 of the male above compared Avith gentilis^ and are more robust with 

 the elytra widest behind the middle and the tibia^ are distinctly stouter. 

 I judge that Casey's smaller specimen with longer and more slender 

 legs is a male, and the larger example with a more robust habitus, 

 is undoubtedly a female. A specimen which I took in the Holy 

 Cross Cemetery in San Mateo county, is the most robust specimen 

 that I have seen and it is a female, it has exactly the same measure- 

 ments as Casej^'s large specimen and agrees with his description, the 

 antennae are distinctly stout and shorter than in the other specimens 

 before me. 



The individuals taken about the sand hills on the peninsula are 

 very graceful insects and at first sight apear quite distinct from 



