NATURAL SCIENCES OP PHILADELPHIA. 317 



Haltica bimarginata Say. The difference between this and Graptodera 

 plicipennis Mann, is not obvious on comparison. The species is abundant in 

 Kanzas, California, Oregon, and at Fort Simpson. 



Haltica i n ae r a t a , oblongo-ovata, convexa, senea, nitida, thorace latitudine 

 duplo breviore, antrorsum subangustato, lateribus parum rotundatis, convexo, 

 parce punctulato, linea transversa postica profunda, elytris parce subtiliter 

 punctatis, thorace paulo latioribus pone basin oblique impressis. Long "18. 



One specimen. Resembles a nondescript but common species of the 

 Atlantic States, known in many collections as H. splendida, but differs by 

 the thorax being more transverse and somewhat narrowed in front. 



Hippodamia 12-p u n c t a t a Dej. 



Hippodamia 5-s i g n a t a Muls. 



Coccinella transverso-guttata Fald. 



Notes on Russian American Species. 



Calathus lenis. Anchomenus lenis Mann. I referred this species formerly 

 to Pristodactyla, but think that there is not sufficient reason for retaining the 

 latter genus. The present species is closely allied to C. ad vena Schaum, 

 Ins. Deutschl. 1, 389, (Pristodactyla advena Lee.) from Lake Superior, and 

 Maine, but in the latter the sides of the thorax are slightly sinuate behind, 

 whereby the posterior angles become less rounded ; among the specimens 

 found by me at Lake Superior is, however, one which does not differ in this 

 respect, and which appears entirely similar to the specimens fromKadjak. 



Schaum's statement from Chaudoir (1. c.) that Pristodactyla differs from 

 Calathus by the absence of furrows on the outer surface of the four posterior 

 tarsi is not correct. Of the specimens of P. impunctatain my collection 

 one has the groove very strongly marked ; three have it distinct, though not 

 deep, while in the two others it is wanting : of the two specimens referred by 

 me to P. corvina Lee, the groove is obsolete in one, and wanting in the 

 other. From these facts I draw two inferences : 



1. The genus Pristodactyla is to be suppressed. 



2. Many of the species of Calathus as at present recognized, are too indis- 

 tinct for systematic purposes, and are to be considered as races clustering 

 around a few principal forms. The species of North America may be arranged 

 as follows : 



A. Thorax postice haud angustatus, foveis basalibus obsoletis. 



1. Corpus elongatum, thorace latitudine haud brevoire, lateribus modice 

 reflexis. C. gregarius Dej. 



2. Corpus elongatum, thorace latitudine haud breviore, lateribus anguste 

 marginatis. C. ing r at u s Dej. ; C. incommodus Mann, (Russ. Am.) and C. 

 confusus Lee. (Lake Superior), are almost imperceptible races of this species. 



3. Corpus elongatum, elytris subopacis, thorace latitudine haud breviore, 

 lateribus modice explanatis. C. opaculus Lee. 



4. Corpus elongatum, elytris subopacis thorace latitudine haud breviore, 

 antrorsum vix angustato, lateribus parum rotundatis vix explanatis. C. 

 quadricollis Lee. 



5. Corpus minus elongatum, elytris subopacis, thorace latitudine breviore, 

 lateribus valde rotundatis explanatis. C. Behrensii Mann. 



6. Corpus minus elongatum, elytris subopacis, thorace latitudine breviore, 

 antrorsum sensim angustato, lateribus parum rotundatis, explanatis. C. 

 obscurus Lee. 



7. Corpus minus elongatum, elytris subopacis, thorace latitudine breviore, 

 lateribus valde rotundatis vix explanatis. L. ruficollis Dej. 



I860.] 21 



