



114 [June, 



The original type of this species, said to have come from Georgia, was 

 kindly given me by Dr. Melsheimer. When it came into my possession, it was 

 covered with an incrustation like mud, which induced Dr. Schaum and myself 

 to consider it formerly as allied to Georyssus. By softening and cleaning the 

 specimen, it was prepared for examination, and I then found all its characters 

 to be of the present genus. The br sties were mostly gone, but a few re- 

 mained about the head and thorax, indicating them to be short and yellowish 

 white. A few small white scales remain on the under surface, but all vestige 

 of such a covering on the upper surface is removed. I perceive no characters 

 by which it can be separated from th> European S. paleata Er. (Ins. 

 Deutschl. 470,) although a comparison of specimens is necessary before it can 

 be placed as synonymous with that epecies. 



2. S. echinata, subrotundata, utrinque paulo angustata, modice convexa, 

 nigra parce fusco-squamulosa, setis longis clavatis nigris hi^pida, capite thora- 

 ceque subtiliter punctatis, elytrorum striis tenuibus punctulatis, suturali ad 

 apicem, marginalique exaratis. Long. 10. 



Le Conte, Agassiz' Lake Superior, 224. 



One specimen found at Eagle Harbor, Lake Superior. 



Byrrhus Linn. 

 (* Alati ; tarsorum articulus tertius haud lobatus.) 



1. B. Kirbyi, ovatus, convexus, niger, pubescens, thorace vittis quatuor 

 atro holosericeis, (externis postice furcalis), elytris vittis utrinque tribus pos- 

 tice abbreviatis, maculaque tiansversa ad dodrantem atro-holosericeis ; dorso 

 figura communi valde transversa sinuata argenteo-pubescente interrupta orna- 

 tis : antennarum articulo ultimo ovali subtruncato. Long. *3l. 



Byrrhus ^'cpes|| Kirby, Fauna Bor. Am. 116; Steffahny, Germ. Zeitschr. 4, 

 24. ' 



Lake Superior. Differs from the following species by its smaller size, and 

 by the elytra being broader and more obtuse posteriorly, whereby the body as- 

 sumes an ovate form, not seen in the allied species. The markings are very 

 similar to the next species, but the posterior transverse black spot extending 

 from near the margin to the middle of each elytron is not seen in B. ameri- 

 canus. The small silvery spots forming the transverse sinuated figure are 

 frequently not apparent. I have changed the name given by Mr. Kirby, as 

 it is preoccupied by a European species. 



2. B. americanus, ovalis, convexus, antice subacutus, niger pubescens, 

 thorace minus distincte vittato, elytris vittis tribus atro holosericeis interrup- 

 ts, guttisque cinereis figuram communem transversam sinuatam formantibus, 

 altensque utrinque tribus posticis ornatis : antennarum articulo ultimo rotun- 

 dato, palpis maxillaribus articulo ultimo ovali truncate Long. *4. 



Le Conte, Agassiz' Lake Superior, 224. 



Niagara, Newfoundland and Lake Superior, not rare. The three cinereous 

 spots behind the transverse figure are placed in a transverse line, about one 

 fourth from the apex. 



3. B. c y c 1 ophoru s, ovalis, convexus, antice subacutus, niger pubescens 5 

 thorace subvittato, elytris vittis tribus atro-holosericeis interrupts, guttisque 

 cinereis figuram communem sinuatam formantibus; antennarum articulo ulti- 

 mo rotundato, palpis maxillaribus articulo ultimo ovali, subtruncato ; pedibus 

 rufo-piceis. Long. -27. 



Kirby, Fauna Bor. Am. 117 ; Steffahny, Germ. Zeitchr. 4, 24; Mannerheim, 

 Bull. Mosc. 1852, 341. 



Lake Superior. Entirely similar in form to the last species, but only half as 

 large, and with the last joint of the palpi more oval and less truncate. The 

 figure on the elytra is of the same form, but less transverse, the length included 

 by it on the suture being about one third of the elytra. The outer black vitta 

 of the elytra is not obvious, being represented by two or three small spots. 



4. B. geminatus, ovalis, antice subacutus convexus, niger, pubescens, 



