224 
Psyche 
[December 
equal width, but very short. The antennal club of the male is of 
the same type as in clavata but not quite so stout, the 9th and 
10th joints not quite equalling the 11th in width and each less 
than twice as wide as long, the apical joint asperate beneath, but 
the 9th and 10th free from asperities except a few marginal ones. 
The dorsal abdominal carinse are long and strong, the inter- 
mediate surface rather strong^ impressed along their inner sides, 
and their distance apart is appreciably greater than 1-3 the discal 
segmental width. The anterior trochanters of the male are 
armed with a rather short acute apical tooth. The metasternal 
processes are strong and subacute at apex, sometimes a little 
obliquely so. 
This is one of our larger species and is of nearly the same 
size as conjunda. 
The type is a male selected from a series of specimens col- 
lected at Springfield, Mass., by Mr. Jas. H. Emerton. There are 
also in my collection a male specimen from Aweme, Manitoba, 
and a pair taken by myself at Anchorage, Alaska, these last re- 
corded as brendeli var. in my recent Alaska List (Pacific Coast 
Ent. Jan. 1926). 1 have seen other examples in Mr. Liebeck’s 
collection from “Canada,” Franconia N. H., and Westville, N. J. 
Rybaxis mystica Casey. 
The antennal club of the male is of the same type as in 
clavata and transversa, and agrees very nearly with that in the 
last named species; the interior flattened area of the 9th and 
10th joints is free from asperities except a few T around the margins, 
the 11th joint distinctly asperate. Dorsal abdominal carinae 
separated at tip by 1-3 the discal segmental width, the carinae 
rather shorter, less strong, and the adjacent surface within them 
less impressed than in transversa. Anterior trochanters of male 
with a rather long spiniform tooth. Metasternal processes post- 
erior, acuminate at apex. Ventral plate very small, truncate in 
front, more or less narrowed behind, and varying from slightly 
wider than long to as long as wide. Average size a little smaller 
than in transversa and conjunda. 
The above characters are taken from a series of specimens 
