104 Journal New York Entomological Society. [Vol. xxl 



Mid-metasternum with thickened margins continuing in alignment with 

 those of the prosternum and reaching the suture of antecoxal piece ; inter- 

 space nearly flat and finely punctured. 



Hind coxal plates with moderately fine, evenly placed, deep punctures ; 

 apices broadly, separately rounded. 



Abdominal segments distinctly margined posteriorly and with the usual 

 rows of punctures very fine, almost obsolete. 



Male front and middle tarsi thickened and slightly pedunculate. 



The unique type has been in my collection for many years and 

 has no more definite locality label than " California." 



Another specimen in the Leconte collection is labelled " Mineri " 

 Cr. Mss. 



I do not see how this very distinct species can be confused with 

 any other. 



Haliplus tumidus Lee. 



This species varies greatly in color and markings. In the twenty- 

 eight specimens before me there are all grades of maculation and 

 color from testaceous with a narrow sutural stripe and small central 

 blotch light brown, to a very dark, almost entirely piceous, color, 

 with the markings scarcely discernible. The most distinctly marked 

 form I have seen may be thus described. 



Color testaceous. 



Pronotum broadly infuscate before and behind. Elytra with base, 

 suture, a large central blotch joining an interior discal spot, a larger 

 posterior spot a little exterior to the discal one, a subsutural, still 

 more posterior joining suture, and an outer subapical spot piceous. 



One character, apparently overlooked by Dr. Leconte, that at once 

 distinguishes this species is that the elytra at the humeri are finely, 

 distinctly asperate. 



The elytral margins are distinctly serrate and the apices serrulate. 



The hind coxal rings are rounded exteriorly, inflexed, inwardly 

 sinuate and with the sutural angle acute and produced. 



Dr. Leconte's description of the metasternum as being " with a 

 deep square impression " is scarcely accurate. When a specimen is 

 properly mounted from the side, so as to show the entire mid-meta- 

 sternum, it will be found to have a deep impression each side, 

 strongly margined exteriorly and with a more or less distinct short 

 ridge in center. In spite of color variation the structural characters 

 are so distinct that the species should be easily recognized. 



