222 PROCEEDINGS OF THE ACADEMY OP 



2. M. obtusa, testacea, pallide pubescens, thorace fortiter dense punctato, 

 latitudine duplo breviore, lateribus rotundatis, angulis posticis obtnsis, apice 

 summo dentiformi prominulo; disco canaliculato et utrinque late impresso 

 elytris dense punctatis, punctis antice fortioribus ; antenni3 extrorsum, pec- 

 tore abdomineque infuscatis. Long. '20. 



One specimen from Andover, Mass., (Mr. Sanborn,) and two from Kansas. 

 Of the same size as the precediug and following, but differs from M. angu- 

 lar i s by the angles of the thorax not being prominent ; from M. g n 1 1 u 1 a t a 

 by the elytra not being impressed at the sides and on the disc ; and from both 

 by the elytra being not distinctly dotted with black. The punctuation is 

 stronger than in M. a n g u 1 a r i s, and about the same as in M. g u 1 1 u 1 a t a. 

 The disc of the prothorax is sometimes slightly fuscous. 



3. M. guttulata. Galleruca gnttulata Lee, Rep. Pacific R. R. Expl., TO. 

 One specimen found by me at San Francisco. Similar in size and shape to 



M. angular is, but the angles of the thorax are not prominent, and the 

 elytra are compressed at the sides, and obliquely impressed behind the hume- 

 ral elevations. 



4. M. debilis, pallide testacea, dense pallide pubescens, thorace latitu- 

 dine duplo breviore, lateribus rotundatis, angulis po?ticis minutis prominulis, 

 disco dense punctato late canaliculato utrinque vage impresso, elytris thorace 

 latioribus, profunde punctatis, punctis antice fortioribus, punctis parvis nioris 

 eerie 4-plici utrinque ornatis, transversim convexis; antennis extrorsum fuscis. 

 Long. -15 -18. 



New Mexico, Mr. Ulke. The pubescence is dense and somewhat silvery. 

 The black dots of the elytra are minute, and those of the subsutural series 

 usually coalesce, forming a narrow, abbreviated line; the humeri are promi- 

 nent and marked with a larger black spot. 



The fifth ventral segment of the male is deeply and narrowly incised. 



This species most closely resembles in appearance M. obtusa, but the 

 claws are distinctly cleft, with the inner portion acute and shorter than the 

 outer one. 



I am disposed to think that G. puncticollis Say, (Journ. Acad. Nat. 

 Sci., iii. 458 ; ed. Lee, ii. 222,) is allied to this species, but the elytra are de- 

 scribed as having two vittae on each, which are frequently obsolete, and the 

 tibiae and tarsi are black. The comparison made by Say with G. b a c c h a- 

 ridis, to which it has no relation whatevei , has rendered the species ob- 

 scure. 



5. M. con s p u ta. Galleruca consputa Lee, Rep. Pacific R. R. Expl., 70. 

 San Jose and San Francisco, Cal., on oak leaves. Smaller and narrower 



than G. d e bi 1 is, with the elytra coarsely punctured, the sides compressed 

 and impressed, and the disc obliquely impressed behind the humeri. 



6. M. s o r d i d a. Galleruca sordida Lee, Proe Ac. Nat. Se Phil., 1858 88. 

 Colorado Desert, California, two specimens. Very similar in form and color 



to G. consputa, but the elytra are finely punctured, with the punctures 

 almost concealed by the dense golden pubescence 



The fifth ventral segment of the male in both species is incised at the tip. 



Prodromus of a Monograph of the Species of the Tribe ANOBIINI, of the Family 

 PTINID.E, inhabiting North America. 



BV JOHN L. LE CONTE, M. D. 



In the classification of the Coleoptera of North America, published by the 

 Smithsonian Institution, I proposed, in 1862, an arrangement of the insects 

 allied to the old genus A n o b i u m, by which the number of genera was 



[Oct. 



