38 ENTOMOLOGICAL SOCIETY 



The declivous asperated pronotum concealing the head from 

 above indicates affinites with Tomicides, but the mouth parts, 

 tibiae, tarsi, widely separated anterior coxae, and exposed pygidium 

 furnish characters which separate it from this and all other 

 groups as at present recognized. 



I am under obligations to Mr. E. A. Schwarz for the privilege 

 of describing this interesting genus and species. He also sug 

 gested the generic name. 



In discussing the paper Mr. Schwarz said that this species was 

 of economic importance, as it bored under the bark of branches 

 of the Banyan trees (JFfctts), thus killing them. 



The first paper read was that of Dr. Dyar, entitled : 



A NEW FORM OF CLISIOCAMPA FROM COLORADO. 

 By HARRISON G. DYAR. 



Clisiocampafragilis, the common species of this genus in Col 

 orado, feeds upon a variety of plants, including wild cherry, rose 

 and aspen, occasionally, but not normally, on the oak. A larva 

 was met with sparingly in the Platte Canyon near Denver, Col 

 orado, feeding exclusively on the oak and differing in habits and 

 coloration from the common form. Later it was seen in abun 

 dance at Sedalia, Colorado. The species is nearly allied to the 

 Californian C. constricta Stretch. 



The eggs were found on the lower twigs of the dwarf oaks 

 in small rings without any covering; these were eggs of the pre 

 vious season. The larvae fed at first in colonies, spinning no tent, 

 only just enough web to hold them to the branches as with C. 

 disstria of the Atlantic States. Later they wandered separately 

 in search of the young leaves which were all they would eat. The 

 larva has a black head, blue powdered in the sutures. The body 

 is as usual, short haired, the lateral tufts as in constricta but more 

 reddish, less contrasting. Orange markings well developed, 

 consisting of a dorsal band constricted at the anterior third of the 

 segment, marked with black and obscurely blue centered ; a sub- 

 dorsal and a lateral line, practically continuous, running into pale 

 orange transverse mottling in the incisures; traces of substigma- 

 tal orange. Blue markings reduced ; two lateral patches, the pos 

 terior one a transverse line cut by the subdorsal band ; subventral 

 region washed in pale blue. The black ground color on.the sides, 

 especially of joints 3, 4 and 12, appears as conspicuous transverse 

 lines. Hairs reddish, scarcely tufted dorsally, orange or white 

 on the sides. 



