Article beginning on page 95.
Psyche 12:95, 1905.

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ON THE SECONDARY SEXUAL CHARACTERS OF NOTIOFHILUS. BY ROLAND HAYWARD, MILTON, MASS.
Some years ago I published a short note on the secondary sexual characters of the North American species of Omophron (Psyche, ix, p. 304), in which 1 re- ferred to the dilatation of the first* joint of the middle tarsi in themales ot a large majority of our species of that genus. Until a short time ago I was unaware of the occurrence of this character elsewhere in the Carabinas, though quite frequently observable in several groups of the sub-family Harpalinas. My attention, however, was recently called by Mr. E. A. Schwarz to the fact that C. G. Thomson (Bull. Soc, Ent. France, 1883, p cxii) had pointed out that in three European species of Notiophilus (aquaticus Linn, palushis Duft. and bz&tta/us Fab.) the first joint of the middle tarsi is dilated and spongy beneath in the males.
I was thus led to an examination of the North American species. Males have been seen of all those known to occur within our faunal limits except aquaficus Linn. and obscurn-s Fall. Based upon this character they may be divided into two groups.
Of these the first contains aquations Linn., s,vZvaticus Esch., hardyi Putz. and nitens Lec., in all of which the basal joint is dilated in the males, and, in the first three at least, spongy beneath. Whether the latter
character occurs in nitens I have been unable to ascertain, as the only specimen that I have been able to study, i. e.: Leconte's type, is so mounted that only the upper surface of the joint is visible; but in all probability it agrees with the other species. Although not seen by myself, I have included aqwaticus on Thomson's authority.
In the second series the joint is simple as in the females Here are included ce-neus Hbst., semiopacus Esch., semistriatus Say and sibiricus Mots. The tarsi are but narrowly dilated in the males of all our species. This
applies to the anterior tarsi as well as to the basal joint of the middle pair. M. Pierre Lesne (Bull. Soc. Ent. France, 1888, p. clxv) calls attention to a character common to many Carabidae which he has observed in the European species of Notiophilus, i. e.: that the anal segment has one setigerous punctuie each side at tip in the males, two in thefemales. This applies to all the species of our fauna that I have seen. Of nitens the male alone is known to me, in which the anal segment is unisetose each side. Aquaticus and obscurz~s are both unknown to me in nature.
*Erroneously printed "second," but corrected ibid, p. 335.



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