-'38- 



Telmalophilui americanus. Judging from the description, the Europ- 

 ean species of this genus do not differ essentially in the two sexes but 



the male of the only North American species shows a remarkable modi- 

 fication of the hind tibiae. These are compressed and, excepting at the 

 very base, much broader than in the female; the outer edge is straight 

 but furnished near the base with a large subtriangular plate which is very 

 thin and semi-transparent. On the inner edge the tibia is concave at 

 basal fourth, then obtusely angulated, thence straight, the tibia gradually 

 narrowing from the angle to the tip. In addition to this character the 

 last \entral segment has a round but rather shallow excavation near the 

 apex. I know of no other Cryptophagid which is so strikingly marked 

 in the male sex. 



Axinocerus americanus. The remarkable antennal characters of this 

 genus described and figured by Dr. Jayne (Proc. Amer. Philos. Soc. 

 XX, p. 367, fig. 63) are those of the male sex. In the female the anten- 

 nas are 10-jointed, 1 the two basal joints like those of the male, the third 

 much narrower, a little longer than wide, the following 5 very small, 

 transverse, gradually increasing in width, the penultimate joint strongly 

 transverse, more than twice as wide as the preceding, the last joint com- 

 pressed, slightly transversely oval (when viewed from the broad side), 

 much smaller than the corresponding joint in the male and hardly twice 

 larger than the first antennal joint. This rare species occurs also in 

 southern Georgia. 



Scaphidmm quadriguttaium. Male: Metasternum in front of hind 

 coxae rather coarsely and densely punctate and furnished with sparse 

 yellowish pubescence, median line obsolete behind the middle. Hind 

 tibiae on inner side with a fringe of fine hair. 



Female: Metasternum not concave, glabrous, with a few very fine, 

 scattered punctures, median line entire and enlarged near the middle 

 into an oblong groove. Hind tibiae simple. 



Malthodes captiosus. In 1882 I found at Deer Park, Md. , a species 

 of iValthodes in the male of which I found a sexual character not men- 

 tioned in any described species of the genns. I forwarded the specimens 

 to Dr. Leconte calling his attention to my observation, and he wrote me 

 that the species was M. captiosus but that in describing this species he 

 had overlooked the best character. The character referred to, is of suf- 

 ficient importance to deserve mention although no specimen is now before 

 me and I describe solely from memory. In the male the sexual characters 

 are not confined to the structure of the abdomen (as described by Dr. 



1 I may be mistaken in the number of joints but the single specimen before 

 is in rather unsatisfactory condition. 



