90 J. B. SMITH. 



VI. — Hind tibia with Jive or six very small oblique ridges. 



Black ; head and sometimes base of thorax ferruginous ; elytra with a fer- 

 ruginous stripe from humerus nearly to the apex. 4 — 5 mm. ; Pennsylvania, 



New York 70. al tenuata. 



Black ; pubescence sericeous brown ; elytra blackish with a long basal spot, 

 an undulated band behind the middle, suture and tip paler sericeous. 



3.5 — 4 mm. : Middle and Southern States 71. discolor. 



Black ; pubescence grayish sericeous, slightly mottled. 4 mm. ; Kansas. 



72. reniula. 



1. Jfl. bicinctella Lee. Pr. Ac. Nat. Sc. Phila. xiv, 48. (PI. II, figs. 15, 16). 

 Rare ; not found so far as I know except in Dr. LeConte's collection 



and the figure is made from his type. 



2. M. arida Lee. Pr. Ac. Nat. Sc. Phila. xiv, 48. (PI. II, fig. 17). 



Found occasionally in New York ; I believe it will be eventually found 

 to be identical with the following, but it needs a larger series than I have 

 been able to get to prove this. 



3. M. ltltea Mels. Pr. Ac. Nat. Sc. Phila. ii, 315, (Mordella). 



Quite as rare as the preceding, and I have seen only a single specimen. 



4. M. trifasciata Say, Journ. Ac. Nat. Sc. Phila. v, 243, (Mordella) ,■ nigri- 

 eollis Hel. Pr. Ac. Nat. Sc. Phila. xvi, 105. (PI. II, fig. 19). 



This latter is evidently a variety only, as Dr. Helmuth himself suggests. 

 I have found specimens of this species with the thoracic band of yellow 

 very narrow, but none in which it was entirely absent ; larger collections 

 from the western states will, I have no doubt, demonstrate the correctness 

 of this reference. 



5. M. lepidiila Lee. Pr. Ac. Nat. Sc. Phila. xiv, 48. (PI. II. fig. 19). 



Very closely allied to the preceding in size, form and general appear- 

 ance ; but readily recognized by the yellow body. The insect appears 

 rare in the vicinity of New York, and I have but very few specimens. 



6. M. limbalis Mels. Pr. Ac. N. Sc. Phil. ii. 315, (Mordella). (PI. II, fig. 20). 

 Also closely allied to the foregoing species so far as form is concerned, 



but the markings are entirely different. This like lepidula is rather 

 rare in New York and vicinity, and the specimens are only found singly. 

 <I have not noticed any variations. 



7. M. elegantulus 8p. nov. (PI. II, fig. 21). 



Differs from the other species in this section by the pale color and 

 brown markings. One specimen only, from Long Island ; my collection. 



8. M. dimiriiata Hel. Pr. Ac. Nat. Sc. Phila. xvi, 105. 



This species I have not succeeded in identifying with the material at 

 my command. It appears sufficiently distinct, from the description, and 

 seems to form the connecting link between the variegated species of this 

 section and the following more modestly colored ones. 



