117 



Habitat. — ^Massachusetts. 



Holotype, d", Fish-hatchery, near Sunderland, Frankhn 

 County, altitude 200 feet. May 5, 1924 (C. P. Alexander). Allo- 

 topotype, 9 ; paratopotypes, 1 d", May 2, 1924; 4 9 9, with the 

 type. The type is in the collection of the writer; a para type in 

 the collection of the Boston Society of Natural History. 



This interesting vernal crane-fiy is named in honor of Professor 

 Henry T. Fernald, to whom the writer is greatly indebted for 

 invaluable advice and suggestions during the course of his 

 studies on this group of flies. Ormosia fernaldi somewhat 

 resembles Ormosia notmani Alexander, from which it is readily 

 distinguished by the longer antennae and the structure of the 

 male hypopygium. The fly is characteristic of the Alnus-Caltha- 

 Chrysosplenium association, although sometimes occurring in 

 the open where the alder has been cut away. It flies in early 

 May in company with Ormosia arcuata (Doane), Ormosia in- 

 nocens (O. S.), Ormosia nuhila (O. S.), Rhaphidolahis cayuga 

 Alexander, Tricyphona mcateei Alexander and Tipula dejecta 

 Walker. 



Subfamily Tipulinae. 

 Tipiila insignifica, new species. 



Belongs to the marmorata group; wings with the usual pattern almost 

 obliterated; male hypopygium of simple structure, the eighth sternite unarmed. 



Male. — Length about 9 mm.; wing 11.8 mm. 



Frontal prolongation of the head moderately elongate, brown, the nasus 

 very long and slender, concolorous; palpi dark brown. Antennae with the 

 scapal segments light yellow, the first segment a little infuscated and pruinose 

 dorsally at base; flagellar segments black, the segments only slightly incised. 

 Head gray, the vertex with a brown median line that is slightly widened behind. 



Mesonotal praescutum gray with three dark-gray stripes that are little 

 evident on this background; scutum gray, each lobe with two dark-gray areas, 

 the more mesal one much the larger; scutellum and postnotum gray, with a 

 continuous though ill-defined darker-brown median line. Pleura gray, the 

 dorso-pleural membrane buffy. Halteres pale, the knobs infuscated. Legs 

 with the coxae pale brown, slightly pruinose; trochanters brownish yellow; 

 femora brown, the bases yellowish, the tips grading insensibly into brownish 

 black; tibiae brown, the tips dark brown; tarsi brownish black. Wings with a 

 very faint brownish tinge, cell Sc and the stigma darker brown; a vague darker 

 seam in cell M along vein Cu, interrupted near midlength by an ill-defined 

 subhyaline area; obliterative areas before the stigma and across the end of cell 

 1st Ml] veins dark brown, most of the longitudinal veins indistinctly seamed 

 with darker. Venation: distal section of vein R2 preserved but with no macro- 

 trichiae beyond the base; basal section of 7^2 virtually lacking; 2^2+3 about one- 

 third longer than the distal section of R2', Rs straight, a little longer than 2^2+3; 

 m-cu about its own length from the proximal end of cell 1st Mi. 



Abdomen obscure brownish yellow, the caudal margins of the subterminal 

 segments very narrowly ringed with paler; hypopygium a little darker. Male 

 hypopygium with the ninth tergite relatively large, the caudal margin with a 

 broad V-shaped notch, the broad lateral lobes thus formed obliquely truncated. 

 Basistyle fused with the ninth sternite, indicated by a suture beneath; outer 

 dististyle a flattened-cylindrical fleshy lobe of nearly equal width throughout 

 its length, the apex obtuse, the surface provided with very short, stout setae; 

 inner dististyle a highly compressed blade jutting into the notch of the tergite. 



