222 



This species has been mentioned as an instance of mimicry because 

 of its resemblance in shape and color-pattern to the syntomid moth 

 Lycomorpha pholiis Drury. Both are found in damp shady woods. 



Caloptcron reticulatiim Fabr. Reticulate Calopteron. (PI. LVIII, 



fig- 4-) 



A single specimen was taken — in the glade in the lowland forest 

 (Sta. IV, c) Aug. 22 (No. 143). 



The larva and pupa of this species are described by Coquillett 

 (Can. Ent., Vol. 15, pp. 97-98. 1883). July 10 he found a pupa 

 "suspended by the hind end of its body beneath a log." 



Photiiris pcnnsylvanica DeG. Pennsylvania Firefly. (PI. LVIII, 



fig- 3-) 



This large fireflv was taken June 28, 191 1, in the Bates woods 

 (Sta. IV) by T. L.'Hankinson (No. 7678). 



McDermott ('10, '11) Knab ('05), and Mast ('12) should be 

 consulted for discussions on the natural history and ecology of our 

 fireflies. McDermott gives many observations on P. pcnnsylvanica. 



Chaiiliognathus uiarginatus Fabr. Margined Soldier-beetle. 



This predaceous beetle was taken June 28, 191 1, in the ,Bates 

 woods (Sta. IV) by T. L. Hankinson (No. 7678). (Cf. Lintner, 

 Fourth Rep. Injurious and other Ins. N. Y., 1888, pp. 74-88.) This 

 is a predaceous species in the larval stage, feeding on immature in- 

 sects. The adults feed on pollen (Riley, in Fifth Rep. Ins. Mo., p. 



154- 1873)- 



Tchphorus sp. 



This was taken June 28, 191 1, in the Bates woods (Sta. IV) by 

 T. L. Hankinson (No. 7678). See T. bilincatus, PI. XLIV, fig. i. 



LUCANID^ 



Passalus cornutus'FahT. Horned Passalus. (PI. LVIII, fig. 5.) 



This common woodland beetle was found under the bark of a 

 decaying stump on the slope of a ravine (Sta. IV, b) Aug. 17 (No. 

 85). One specimen, with a chestnut thorax and yellowish wings, 

 had just shed the pupal skin. Another, a fully matured specimen, 

 carried a large colony of mites. Ewing (Univ. Studies, Univ. 111., 

 Vol. 3, p. 24. 1909) states that nymphs of uropod mites are often 

 attached to insects for transportation. It has generally been as- 

 sumed that they are parasitic. 



This Passalus seems to be one of the most common insects found 

 in decaying logs and stumps. I have found it very abundant at 



