II NOTES ON THE COCCINELLIDAE WITH SOME 

 GENERAL REMARKS AND SYNONYMY. 



COCCINELLIM:. 



Exochomus Redt. 



Because of misidentifying a species described by Weise, now 

 known under the name Exochomus septentrionis, I have done Mr. 

 Leng an injustice (Can. Ent., XL, p. 412) which I desire to rectify. 

 Mr. Leng informs me that he has corresponded with Dr. Weise 

 on the subject and that the latter made known to him certain facts 

 concerning the true septentrionis, which materially alter the con- 

 ceptions formerly entertained. It seems that the true septentrionis 

 is from a more western part of the Hudson Bay regions, that it is 

 very feebly punctured and has the elytral maculation reduced to 

 a narrow sutural vitta, expanded at the apical margin, and two small 

 isolated discal spots on each elytron. Through the kindness of 

 Mr. Leng I have received examples of davisi Leng, septentrionis 

 Weise, as taken by Mr. Norman Criddle at Aweme, Manitoba, 

 and a specimen of hogei Gorh., taken at Pueblo, Colorado. There 

 is no question in my mind now, that we have three allied but per- 

 fectly distinct species of this particular group of Exochomus. 



The five examples of davisi sent by Mr. Leng are mutually 

 homogeneous and similar in every way to the single specimen already 

 in my cabinet, which I mistook for septentrionis. It differs from 

 both septentrionis and hogei in the constantly more developed 

 black maculation, the anterior spots being united occasionally 

 with the much broadened sutural vitta, but, especially and specifi- 

 cally, in the notably coarse deep punctures of the elytra, there being 

 no material variation in this character. 



The example of hogei, from Pueblo, represents probably almost 

 the extreme northern extension of this Sonoran species and is wholly 

 similar to the El Paso specimens in my collection. On comparing 

 it with the Manitoban septentrionis, certain important differences 

 are at once apparent, the most manifest of which pertains to the 

 position of the small circular spots of the elytra. In septentrionis 



246 



