THE FAMILY LYCTID^. 121 



SYSTEMATIC NOTES. 



Genus LYCTTJS Fabricius. 



Lyctus Fabricius, 1792, p. 502. 

 Xylotrogus Stephens, 1830, pp. 116-117. 

 Trogo.rylnn Le Conte, 1861, p. 209. 



Lyctus impressus ("omolli. 



Lyctus imprrssii.f ComnUi, 1837, pp. 40-85; Seidlitz, 1875, p. 160; Erichson, 1877, 



p. 17. 

 Trogoxylon impressus (Comolli) Reitter, 1885, p. 100.,^ 



This species is the largest of the Trogoxylon group which the 

 author has seen. It is very distinct in the quadrate prothorax and in 

 the possession of the three elevations at the sides of the head, one over 

 the eye, another just before it at the frontal angle, and another at 

 the lateral angle of the epistoma. 



Material examined. — A series of 5 specimens, very constant in 

 character, except in size. The species occurs in southern Europe, 

 but has not as 3'et been recorded from the United States, 



Lyctus punctatus (Le Conte). 



Trogoxylon punclatum Le Conte, 1866, p. 104. 

 Lyctus punctatus (Le Conte) Casey, 1891, pp. 13, 16. 



This species is easily known by its short, broad form, coarse punc- 

 tation of the pronotum and elytra, and the stiff, short, ahiK^st squa- 

 mose pubescence. 



Material examined. — A single specimen from Santa Rosa, Lower 

 California, and Le Conte's type, which is from Cape San Lucas, Lower 

 California. 



Lyctus calif ornicus Casey. 



Lyctus californicus Casey, 1891, p. 14. 



This species is readily recognized by its elongate, highly polished 

 body, and by the finely but definitely striated punctures of the elytra, 

 the pubescence of which is fine and sparse. It is easily distinguished 

 from L. curtulus, to which it is probably most closely allied, by its 

 more slender, parallel, elongate form, finer elytral punctures, and 

 other minor details. There is some variation in size and density of 

 color, but other characters are quite constant. 



Material examined. — A series of 5 specimens from Santa Rosa, 

 Lower California. Colonel Casey's specimens are from Fort Yuma, 

 Cal. 



Lyctus parallelopipedus (Melsheimer). 



Xylotrogus pnrallelopipedus Mehheimer, 1844, p. 112. 



Trogoxylon parallelo pi pedum (Melsheimer) Le Conte, 1861, p. 209; Le Conte and 



Horn, 1883, p. 229. 

 Lyctus parallelopipedus (Melsheimer) Casey, 1891, p. 13. 



