222 JOURNAL OP ECOXOMIC ENTOMOLOGY [Vol.3 



feed on caterpillars and pupae of various insects. Frigidum larvee 

 were not observed on tree trunks in the areas examined in New Hamp- 

 shire but it was not necessary for them to climb as plenty of food 

 was available on the ground. 



Miss Edith M. Patch has found these larva, as well as the beetles, 

 feeding on Heter'ocampa caterpillars, on tree trunks, which shows that 

 it is possible for the larvfe to climb to secure food in case it is neces- 

 sary to do so. 



The abundance of Heterocampa next summer in the sections exam- 

 ined will, of course, offer interesting data on the value of Calosoma 

 frigidum in controlling this insect. 



This concludes the Proceedings. 



A. F. Burgess, Secretary. 



Panama Ticks.— We notice in Mr. Hooker's list of Dec, 1909, p. 415, of ticks 

 from Panama no mention of two of our common species, Amhlyomm(i dlsshnile, 

 the common iguana tick of this region, and Amblyonima varium, taken from 

 Bufo marinus, our common toad; determinations made by Banks and Hunter. 

 This last tick has been of some interest to us for it is probably the inter- 

 mediary host of Filaria sp., and also of a Hemogregarine. Sections of adult 

 ticks showed undoubted development of filaria embryos. The blood of every 

 one of eight specimens of this toad contained filaria embryos, and each one 

 of the adults dissected had three or four adult filaria in the lymph sinuses. 

 The blood of five of the toads contained the hemogragarine. All of the toads 

 were infected by Amhlyomnia varium. 



Dr. Samuel T. Daklixg, 

 Chief, Board of Health Laboratory. Aiico)i Hospital, Isthmus of Panama. 



