136 Memoirs on the Coleoptera 



The species is related to texanum and lacusire, but the ground color 

 is much paler, the dark spots being thus more clearly isolated, and 

 the strial punctures are much coarser, closer and deeper. In 

 coarseness and closeness of strial punctuation it is almost similar to 

 americanum, but the body is much larger and the elytral spots 

 more isolated. Texanum and lacustre are mutually closely allied, 

 differing from americanum in the larger size and much broader 

 outline and in the finer and less close-set and less coarsely punc- 

 tured striae ; texanum has the elytra somewhat the shorter, with the 

 sides basally more strongly rounded or inflated. 

 The following species may be placed near solidum: 



Omophron illustre n. sp. — ^Evenly elliptic, convex and shining, the 

 dark areas above with bright green metallic lustre; head more than half 

 as wide as the prothorax, the green basal area sparsely but distinctly 

 punctate and deeply, angularly emarginated by the anterior smooth 

 piceo-testaceous area; antennae slender and flavo-testaceous; prothorax 

 more than twice as wide as long, the sides moderately converging and 

 very evenly arcuate from base to apex; surface broadly and feebly con- 

 cave along the sides, strongly punctate, less closely toward the middle 

 of the length; metallic green, pale along the sides, extending inward a 

 short distance at apex, without other pale areas; elytra broadly semi- 

 elliptic, barely longer than wide, the sides very evenly arcuate and sub- 

 continuous with those of the prothorax; green metallic area very large 

 and almost unbroken, the narrow pale margins prolonged inward in a 

 broad and very irregular fascia near the base to the second stria, and, 

 obliquely and broadly extending inward at apex; otherwise the large 

 green area has only about two very small detached external spots; striae 

 15 in number, not coarse or much impressed, the punctures relatively 

 small and widely separated. Length (9) 6.3 mm.; width 3.8 mm. 

 Utah (Vineyard),— Spalding. 



This very distinct species may be placed near solidum, but it 

 differs greatly in its less broadly and still more evenly elliptic out- 

 line, in the finer elytral striae, with much smaller, widely separated 

 punctures, and the brighter green lustre of the dark dorsal areas. 



Elaphrus Fabr. 



Among the small and densely punctate species of this genus there 

 seems to be some confusion ; punctatissimus and sinuatus of LeConte 

 and intermedius Kirby, are the same as ruscarius Say; gratiosus 

 Mann., from Kenai, Alaska, having the ocellate elytral foveae 

 violaceous, is evidently a distinct variety or is perhaps specifically 



