NATURAL SCIENCES OP PHILADELPHIA. 221 



cipite nigro, thorace latitudine duplo breviore, angulis parum prominulis, 

 disco vage punctato, utrinque profunde oblique impresso vix canaliculato, 

 maculis tribus magnis nigris ornato, elytris dense punctatis, vitta suturali al- 

 teraque subraarginali latis nigris apice baud conjunctis ; antennis nigris basi 

 testaceo-maeulatis ; subtus fusco-testacea incisuris tarsorum obscuris. Long. 

 36. 



Middle and Southern States. Distinguished from T. baccharidis by its 

 smaller size, not prominent thoracic angles, and not convergent elytral vitta;. 

 Resembles in elytral markings T. canadensis, but at once known by the 

 more strongly punctured elytra. 



9. T. b re vi c o 1 1 i s, fusco-testacea, occipite parce punctato nigricante, 

 thorace latitudine triplo breviore, angulis anticis prominulis, disco rugose 

 punctato utrinque oblique profunde impresso, maculis tribus magnis nigris 

 ornato, elytris confertissime subtilius punctatis, vitta suturali alteraque late- 

 rali latis nigris; margine laterali a humero usque ad medium testaceo; anten- 

 nis nigris, articulis baseos subtus testaceis ; corpore subtus fusco, pedibus 

 testaceis, fusco-maculatis. Long. -31 -38. 



Abundant in the Southern States, near the sea coast, one specimen from 

 Kansas. Easily known by the very short thorax and by the black vitta extend- 

 ing to the lateral margin of the elytra, from the middle to the apex, which is 

 therefore not margined with yellow, as in the other species. 



MONOXIA Lee. 



This genus contains small testaceous species, densely clothed with yellow 

 hair, and easily recognized by the ungues being neither cleft, nor appendicu- 

 late. 



The body is elongate, convex ; the head is destitute of the usual impressed 

 lines, the front narrow, not carinate ; the maxillary palpi are rather slender, 

 with the last joint conical, acute, and a little longer than the preceding. The 

 antennae are stout, with the third joint longer thau the fourth ; the second 

 joint is half as long as the third. The thorax is rounded on the sides, with 

 the angles prominent, and the disc broadly channelled, with two discoidal im- 

 pressions. The elytra are wider than the thorax, distinctly margined, as in 

 the smaller species of Galleruca, with the epipleurae sharply defined, and ex- 

 tending to the tip. Pygidium perpendicularly deflexed in both sexes. Front 

 coxa? contiguous, conical, prominent ; tibiae not sulcate externally, ungues 

 slender, acute, not toothed, nor dilated at base, in one section, with a small 

 acute tooth not divergent as in Galleruca in the second section. The deflexed 

 pygidium readily distinguishes this genus, and gives to the ventral surface 

 somewhat the appearance observed in genera allied to C lythra. 



A. Ungues slender and entirely simple ; 



Angles of prothorax very prominent 1. angularis. 



Angles of prothorax not prominent ; 



Elytra not impressed 2. obtusa. 



Elytra impressed 3. g u 1 1 u la t a. 



B. Ungues stouter, with an acute tooth near the tip ; 



Elytra uniformly convex 4. d e b i 1 i s. 



Sides compressed, disc obliquely impressed ; 



Elytra strongly punctured 5. con sputa. 



Elytra finely punctured 6. sordida. 



1. M.angularis. Galleruca annularis Lee, Prtfc. Acad. Nat. Sci. Phil., 

 1859, 90. 



California, near San Francisco ? given me by Mr. S. S. Rathvon. Easily 

 distinguished by the very prominent angles of the prothorax. The elytra are 

 finely and densely punctured, and not impressed. 



1865.] 15 





