108 JOTJENAL OF ENTOMOLOGY AND ZOOLOGY 



F. Tuttle found a large, nearly full-grown larva in moss, 

 Hypnum cupressiforme L.* in Cascadilla gorge; the specimen 

 was given to me on the 11th and placed in breeding-jars con- 

 taining damp moss of the same species. On May 8th, I went 

 to Coy Glen, near Ithaca, and there sifted a dead larva from 

 another species of Hypnum; on May 11th I secured another 

 larva from the moss in Cascadilla gorge, and this specimen was 

 likewise transferred to my breeding-jars. On Maj" 25th when 

 these jars were examined, it was found that both specimens 

 had pupated but were still very pale and uncolored. On May 

 30th, one female emerged from these i^upae and was identitied 

 as being this species. 



The larvfe of Liogmo are the most sluggish of any crane-flies 

 known to me. They move only with great slowness and at most 

 times appear to be quite dead. They crawl about amongst the 

 stems of their host-plant and probably never leave it, not even 

 to pupate. 



At Orono, Maine, I sifted some Hypnum in Standpipe woods 

 on June 16th and found two fully-colored pupae, which were 

 killed for specimens on June 17th; on the latter date I found a 

 third i^upa in the same woods. 



In nature the insects probably emerge about the middle or 

 latter part of June and adult flies may be found in June and 

 July. The rapid development and early emergence of these 

 flies in breeding-jars where they are influenced by artificial 

 conditions of heat, light and moisture has been mentioned 

 earlier by Dr. Mueggenburg and others. In our breeding-jars 

 the length of the pupal stage was apparently not more than six 

 days but in the field it is undoubtedly longer. 



In the northern part of its range the adult flies probably do 

 not appear before July (Kearner, Ont., July 9, '09; St. Johns, 

 Queb., July 20, '01). In the northern United States the insects 

 are on the wing in late June and early July. (Orono, Me., June 

 8, '13; Ellsworth, Me., June 15 to July 4, '13; Machias, Me., 

 July 25, '07; Manchester, Vt., June 6, '10; Montpelier, Vt., June 

 25, '06). In New York state the flies are common in damp 



* Determined by Mr. H. D. House and Prof. C. H. Peck of Albany, N. Y. 



