390 NEW YORK STATE MUSEUM 



c Mesonotum yellowish and slaty brown ; the distal portion of the 

 stem of the 5th antennal segment with a length 2J/2 times its 

 diameter, slightly expanded apically; the basal clasp segment 



stout, tapering slightly. Taken on fern 



f i 1 i c i s Felt, C. 20, ?23 



cc Mesonotum sooty yellow; the distal portion of the stem of the 



5th antennal segment with a length y^ greater than its diameter, 



slightly expanded apically; basal clasp segment stout, broadly 



rounded apically. Taken on basswood, Tilia 



a p i c a 1 i s n. sp., C. 52 

 ccc Mesonotum dark brown ; the distal portion of the stem of the 5th 

 antennal segment with a length twice its diameter, greatly ex- 

 panded distally; the basal clasp segment short, broad, tapering 



strongly. Taken on skunk cabbage, Symplocarpus 



f o e t e d i n. sp., C. 24, 28 



hb The basal portion of the stem of the 5th antennal segment with a 



length 5^2 greater than its diameter 



c Mesonotum reddish brown ; the distal portion of the stem of 



the 5th antennal segment with a length 3 times its diameter; 



the basal clasp segment short, stout and tapering strongly. 



Taken on skunk cabbage, Symplocarpus 



symplocarpi n. sp., C. 23 

 aa Abdomen yellowish red 



h Mesonotum dark brown; the basal portion of the stem of the 5th 

 antennal segment with a length only ^ its diameter ; the basal 

 clasp segment short, stout and roundly tapering distally. Taken 



on fern consobrina Felt, C. 61 



aaa Abdomen light brown ; the basal portion of the stem of the 5th antennal 



segment with a length J^ its diameter 



h Mesonotum dark brown ; basal clasp segment very short, stout and 



roundly tapering apically. Taken on basswood. .t i 1 i a e Felt', C. 25 



hh Mesonotum light brown ; the basal clasp segment very short and 



stout. Taken on sedge caricis n. sp., C, 19 



aaaa Abdomen reddish brown 



b Mesonotum yellowish brown; the basal portion of the stem of the 5th 

 antennal segment with a length 1/2 its diameter ; the basal clasp seg- 

 ment short, stout and narrowly rounded apically. Swept from pine 



a b d o m i n a 1 i s n, sp., C. 16 



coNTARiNiA Rond. 



This genus, as at present limited, may be recognized by the nearly 

 equal nodes of the male antennae each with but one circumfilum. 

 The wings are rather long aiid narrow, the length usually being 

 twice that of the width [pi. 37, fig. 6]. The claws are simple and 

 the basal clasp segment of the male lacking the conspicuous sub- 

 triangular apical process so characteristic of Dcntifibula. 



