AMERICAN COLKOPTERA. 83 



although single specimens tend to that shade. The markings are usually 

 very sharply outlined, and variation is only in size. 



7. M. luarginata Mels. Pr. Ac. Nat. Sc. Phila. ii, 312; hneata Mels. id. 

 p. 313. (PI. I, fig. 42). 



These two species of Melsheimer I consider identical, the difference 

 between the two expressed in words is, marginata — " elytra with small 

 cinereous markings, more or less confluent;" Hneata — "markings con- 

 fluent into narrow lines." I have specimens collected by myself that it 

 would puzzle the most ingenious to place if the two are to be regarded as 

 distinct. I have found it in the Orange, Catskill and Adirondack Mts. 



8. M. I n it ii lata Hel. Pr. Ac. Nat. Sc. Phila. xvii, 96; obliqua Lee. Pr. Am. 

 Philos. Sue. xvii, 428. (PI. II, fig. 1). 



These two species are without doubt identical ; Dr. LeConte's type of 



obliqua which I have seen has the cinereous vitta very distinctly marked, 



but of the other specimens in his collection not one ee-uals his type 



in this respect, and one of them at least might serve for just such 



a description as Dr. Helmuth gives ; the type of lunulata was probably 



a somewhat rubbed specimen. Very few specimens are known, and all 



are in Dr. LeConte's collection. 



9. M. serval Say, Bost. journ. Nat. Hist, i, 191. (PI. II, fig. 2). 



Rather rare, and no two specimens seem alike ; one, found on Long 

 Island, is dark fuscous, but agrees perfectly in the markings with entirely 

 black specimens; the transverse elytra] band varies somewhat, but never 

 enough to raise any doubt as to the identity of the species. 



10. M. angtilata Lee. Pr. Am. Philos. Soc. xvii, 427. (PL II, fig- 3). 



I have seen the type. It is comparatively narrower than the other 

 species of this genus, and has more the superficial appearance of Mor- 

 dc/listnia. The markings are well shown in the figure. 



11. M. oculata Say, Bust. Journ. Nat. Hist, i, 190; joviaiis Lee. Pr. Am. 

 Philos. Soc. xvii, 42s. (PI. II, fig. 4). 



This species does not seem to vary much except in the compara- 

 tive distinctness of the markings. I have seen Dr. LeConte's type 

 of joviaiis, and it is only a perfectly fresh and unusually distinctly 

 marked specimen of oculata. I have carefully compared it with all 

 the specimens under my control, and I have not a doubt as to the 

 correctness of my conclusion. 



12. M. iiisulata Lee. Col. Kans. p. 16. (PI. II, fig. 5). 



A very well marked species and readily recognizable by the cinereous 

 sutural line ; the species is rather uncommon, and I have been unable 

 to note any peculiarities. 



