214 MEMOIRS ON THE COLEOPTERA 



thin and finely, irregularly crenulate; hairs small even along the edges; 

 scutellum twice as wide as long, well developed, the tip very acute; 

 elytra two-thirds longer than wide, scarcely a fourth wider than the 

 prothorax, parallel, rapidly very broadly ogival and obtuse behind, 

 the sides evenly and rather feebly arcuate, surface polished, the 

 granules moderately sparse, not very large, mingled larger and 

 smaller; lateral margins rather strongly elevated, not very thin, 

 densely, granularly rugose; abdomen shining, finely but strongly, 

 closely asperato-rugulose, less densely toward the sides; legs mod- 

 erate, rather stout. Length (c?) 11.0-11.8 mm.; width 4.8-5.0 mm. 

 Southern California, Sanford and Schaupp vegrandis n. sp. 



The individuals of the various species in this group of Stethasida 

 seem to be solitary in habits to a considerable degree, and it is 

 therefore but seldom that series can be taken in any one locality. 

 For this reason the set of nine specimens of muricatula in my col- 

 lection is not very homogeneous, and forms, seemingly varietal, 

 could readily be set aside from it; but it would be of slight utility 

 to attempt this at present. In stating angustula to be simply the 

 male of muricatula, Dr. Horn neglected to even cursorily examine 

 the types; for, if he had done so, he could not have avoided perceiv- 

 ing that the original type of angustula is itself a female. This 

 species, in point of fact, bears no close resemblance to muricatula, 

 except in the general characters of the group, and there can be no 

 doubt of its validity. The genitalia are seldom even partially visible 

 externally in this group and the male and female differ but little 

 in outward appearance or in the maxillary palpi. When males and 

 females are both present in a series, the sexes can be recognized 

 very easily by differences in the length of the hind tarsi, the latter 

 always being longer in the male. 



