AMERICAN COLEOPTERA. 37 



E. qnadrimaeulatus, n. sp. — Elongate oval, black, not hronzfd, shining; thorax 

 broaiiiM- than long, sides very feebly rounded, gradually converging to apex, 

 disc very sparsely punctured. Elytra oval, sides feebly rounded, above moder- 

 ately convex, with distinct striae of rather largo punctures becoming smaller 

 towards the apex, interstices scarcely punctured ; a large liumcral (red when 

 living) luteotis spot, another more elongate near the apex of each elytra. Legs 

 luteous. Length .08 inch; 2 mm. 



Besides the groove limited on the outer side by a slight carina 

 seen in the other species of the group, this has a slight rounded im- 

 pression on each side of the scutellar region of the base of the thorax. 

 It may be known from the two preceding species by its more elongate 

 form, deeply punctured elytral strife, and very feebly punctured thorax. 

 The two spots on each elytron never tend to the formation of a stripe. 



In the waters near Fort Crook, California. 



E. glaber, n. sp. — Elongate oval, rather robust, black, feebly shining. Tho- 

 rax slightly broader than long, sides feebly sinuate in front, rounded at middle 

 and slightly narrower at base, disc with two entire lines extending from base 

 to apex and a transverse impression at middle between the the two lines ; space 

 between the elevated lines smoother and less punctured, sides more opaque and 

 more coarsely punctured. Elytra oval, sides feebly rounded with striaj of mo- 

 derately large punctures, less distinct at apex, interstices flat, feebly punctured ; 

 fifth interspace carinate for a short distance, seventh carinate from humerus 

 to near the apex. Legs and antennae brownish. Length .OS inch; 2 mm. 



The space between the fifth elytral interspace and the margin is 

 more distinctly punctured and opaque than the middle of the elytra. 

 The humeri have a faintly paler appearance. The species may be 

 easily recognized by the entire lateral thoracic carina, the transverse 

 impression, and the two lateral elytral carina). 



San Pedro River, Arizona. One specimen only taken. 

 E. nitidulus, Lee. Proc. Acad. ISGti, p. 380. 



Ijcngth .05 inch; 1.25 mm. 



New York. 

 E. latiusculus, Lee., loc.cit. 



Jjcngth .01) inch; 1.5 mm. 



Mountains of Pennsylvania. 



The descriptions of Dr. LeConte are so recent and explicit that it is 

 not deemed necessary to repeat them here. 



E. moestas. n. sp. — Elongate sub-parallel, brownish, opaque. Thorax sub- 

 quadra,te, very slightly broader behind, sides moderately rounded and very 

 slightly sinate near the hind angles; disc convex with two lateral elevated 

 lines, surface opaque and granulate. Elytra elongate, subparallel, moderately 

 convex, sinuate at apex; surface distinctly striate, striic with rather large dis- 

 tant feebly impressed punctures, interstices flat, granulately rugose. Under 

 surface granulate, last abdominal segment broadly transversely impressed" 



