1930 ] 
Permian Insects of Kansas 
361 
between Cul and Cu2 ; one between Cu2 and 1A ; frequently 
a cross-vein is present in the pterostigmal region ; posterior 
margin indented at the base. 
Type: No. 62 Sellards collection, showing the thorax, 
abdomen, cerci, and folded wings. 
In the Harvard collection there are twenty-five specimens 
of this species, aside from fragments; these are Nos. 3075- 
3094, and 3111-3115. The more important of these are as 
follows: No. 3078ab, complete wing; No. 3082ab, complete 
to very base; No. 3085ab, complete and finely preserved, 
the subcosta being very clear; No. 3086ab, complete, also 
with a distinct subcosta; No. 3111ab, nearly complete 
wings, with thorax and cerci; 3112ab, base of wing, head, 
thorax, and fine antennae; No. 3113ab, a whole specimen, 
thorax well preserved; No. 3114ab, most of wing and cerci; 
No. 3115ab, parts of wings, head, thorax, abdomen, legs, 
antennae and cerci, all finely preserved. Tillyard has figured 
(1926a, p. 61) the “remains of head, thorax and legs” as 
preserved in specimen No. 5043ab of the Yale collection, 
showing three ocelli and one mandible. I have examined 
this specimen under various types of illumination and from 
all angles, but have been unable to make out any of the 
details which Tillyard has figured. 
Doter affinis Tillyard 
Asthenohymen affinis Tillyard, Amer. Journ. Sci. (5), 
11 (61) : 65, fig. 2. 
Asthenohymen stigmatazans Tillyard, ibid, p. 66, fig. 4. 
Length of wing, 7.5 mm. ; width, 2.3 mm. Venation simi- 
lar to that of D. minor, but 1A is remote from Cu2 and not 
connected with it by a cross-vein ; wing broader at the base 
than minor; pterostigma weakly formed. 
Holotype: No. 5050a Peabody Museum; counterpart in 
Tillyard collection. In the Harvard collection there is a 
complete wing of this species, No. 3095ab (F. M. Car- 
penter, collector). This species may represent the hind 
wing of minor . 
