EROTYLID^E 161 



with the elytra densely alutaceous; it occurs in North Carolina. 

 Some of the described species are made subspecies of humeralis by 

 Crotch, but there is very little reason for this course, since large 

 series of such forms as humeralis and biguttata show that the color- 

 ation is virtually constant; however, this is a minor point. San- 

 guinipennis and pulchra, which are placed in Mycotretus by Crotch, 

 are to be restored to Tritoma, and this is probably true also of 

 Mycotretus simulator Cr., though I have not seen that species. The 

 Tritoma brunnea of Lacordaire, which is said by Crotch to be an 

 immature form of angulata, is not that species by any means, but is 

 the same as the one described by him (p. 354) under the name 

 Ischyrus nigrans, as before stated. The author is probably 

 correct in considering Tritoma livida Lac., as founded upon 

 an immature specimen of affinis, but is apparently wrong in 

 placing flavipes Lac., as a synonym of angulata. The description 

 of flavipes shows that in general characters it resembles angulata 

 rather closely, but the size is given as 1.5-2.0 mm. in length and 

 1.01.3 in width, which would not fit angulata at all. The following 

 are some undescribed species received from time to time: 



Tritoma ornata n. sp. Form oval, rather strongly convex, distinctly 

 narrowed behind, especially in the male; upper surface black, the elytra 

 with the large basal rufous areas coming together at or slightly behind 

 the scutellum, very much as in biguttata; each elytron also has a large 

 external rufous area at apex, the basal and apical areas joined by a very 

 fine rufous line along the middle of the fifth interval, this line occasionally 

 obsolescent; under surface deep black throughout, the apex of the ab- 

 domen rufous; legs pale; antennae pale, with darker club, not quite as 

 long as the prothorax, the third joint normally elongate; head not very 

 shining, minutely, not densely punctate; prothorax nearly twice as wide 

 as long, with converging and broadly arcuate sides, broadly advanced 

 and slightly thickened apical angles and distinct basal lobe, the surface 

 minutely, sparsely punctate and shining medially, alutaceous and less 

 sparsely though still minutely punctate toward the sides, also with a 

 series of larger shallow punctures along each basal sinuation; elytra 

 shining, two-fifths longer than wide, parabolic, at the rather tumid humeri 

 distinctly wider than the prothorax, the punctures moderate and in 

 unimpressed entire series, the fifth outwardly arcuate basally, the fifth 

 interval broadening correspondingly; under surface minutely, rather 

 sparsely punctulate throughout. Length 3.0-3.8 mm.; width 1.8-2.25 

 mm. Wisconsin (Bayfield), Wickham. 



This species might be considered as allied to vittata Lee., but the 

 latter is said to have the sides of the prothorax rufescent and the 



T. L. Casey, Mem. Col. VII, Nov. 1916. 



