392 MEMOIRS ON THE COLEOPTERA 



description of the latter states that the prothorax is not at all nar- 

 rowed anteriorly; the narrowing of the apex is slight though ob- 

 vious in suturalis and very pronounced in cervicalis. Other differ- 

 ences would undoubtedly become evident if the type of velox were 

 available for comparison, as its habitat is quite different from ex- 

 treme southern Florida, a large proportion of the species of which 

 are peculiar to that region and, in many cases, more nearly allied 

 to Cuban than to more northern Atlantic species. 



The species described under the name parallelus seems to be the 

 closest approach to micans Chd., from Opelousas, Louisiana, that 

 I have in my collection, but in micans the legs are bicolored, the 

 femora being darker than the tibiae and tarsi, and the surface be- 

 tween the thoracic fovese and the sides is flat; in parallelus it is 

 convex. In micans the apical thoracic incised line is said to be 

 wholly interrupted in the middle; it is deep and entire in parallelus; 

 the elytra also seem to be more abbreviated and oval in the former. 

 The interrupted incised. line in micans seems to be similar to that 

 described above in ludovicianus, but the latter is a larger species, 

 with uniformly dark rufous legs, and the elytral striae are very finely 

 and not "fortement" punctured. 



I was at first disposed to identify cursitans as floridanus Lee., 

 but the author states that in the latter species the elytra are iri- 

 descent and the striae feebly and finely punctulate, neither of which 

 characters will fit the more southern cursitans. The species in- 

 guietus and velocipes, of the table, are both allied more closely to 

 erraticus Dej., than to any other described thus far, but in the latter 

 the sides of the prothorax are said to be slightly sinuate basally 

 and to form an angle with the base which is "tout-a-fait droit." 

 The legs in inquietus are differently colored, all the femora being 

 described as blackish-brown in erraticus, and in velocipes the strial 

 intervals are flatter. Although from an extreme southern latitude, 

 the species above described as celer Dej., seems to fit the author's 

 description, especially in the very fine strial punctures; in concinnus 

 these punctures are much more conspicuous and the bodily form is 

 quite different. 



In Loxandrus the mentum tooth constitutes a peculiar exception 

 among the Pterostichinas, being very thin, flat, diaphanous and 

 trapezoidal, with the apex more or less strongly and evenly rounded. 



