102 H. C. FALL. 



GIBBIUN Scopoli. 



Mentum elongate-triangular, trophi substantially as defined of 

 the subfamily, the labrum emarginate. Head oblong-oval, striate 

 laterally. Eyes very small, elliptical, flat, subfrontal in position. 

 Antennae inserted before the eyes; not quite as long as the body; 

 rather stout, subfiliform, slightly attenuate ; joints 1-10 not very 

 unequal, the eleventh acuminate and longer than the two preceding 

 united. Prothorax very short, conical, angulate at base, the sides 

 straight, continuing the curve of the elytra. Scutellum invisible. 

 Elytra connate, strongly inflated, widely embracing the sides of the 

 body and diminishing the width of the ventral surface to scarcely 

 one-third that of the elytra. 



Presternum excessively short, the coxae contiguous with its ante- 

 rior margin ; intercoxal process moderately separating the coxae, not 

 attaining their summits. Middle coxae rather narrowly, hind coxae 

 small and widely separated ; the metasternum truncate, without 

 intercoxal process of the first ventral segment. Abdomen with four 

 ventral segments, segments 1-3 slightly decreasing in length ; fourth 

 nearly as long as the first three united. Trochanters very long, the 

 posterior ones two-thirds as long as the femur; tarsi somewhat com- 

 pressed laterally, joints 1-4 decreasing in length ; fifth longer, but 

 shorter than the first ; claws small, divergent. 



The upper surface is glabrous and impunctate throughout ; the 

 under surface, legs and antennae densely clothed with short coarse 

 yellowish hair, which is longer along the interior margin of the 

 tibiae and forms a dense fringe on their outer edge. Our only spe- 

 cies is the cosmopolitan : — 



O. psylloides Czemp. 



This species needs no further description than that given in the 

 generic diagnosis above. In the few specimens examined the meta- 

 sternum is tuberculate at middle ; I cannot say whether, this is a 

 sexual character or not. This very singular insect is said to live in 

 houses, etc., where it breeds in all sorts of dried animal substances. 

 Mr. Fuchs writes me that he has taken it not infrequently in San 

 Francisco, crawling upon the walls of his kitchen, especially in 

 November. 



The specimens before me are from Virginia, Tennessee, Georgia, 

 Alabama, Lojisiana, California (San Francisco) and Lower Cali- 

 fornia (San Jose del Cabo). 



