152 ENTOMOLOGICAL SOCIETY 
beneath, darker above, with the upper edge quite black, each margin 
fringed with short coarse brownish red hairs, second, third and fourth 
joints with short coarse hairs on edges, all of the joints have short flattened 
lobes projecting beyond the apex, claw joint ferruginous as long as three 
before it combined, claws black at base of cleft, tips ferruginous ; anterior 
coxae with well developed black spines, tipped with red, subapical spines 
ferruginous, trochanters and coxae black; front and middle femora 
slightly swollen, all the femora reddish beneath, the first with the portion 
where the tibia rests when closed against it smooth and highly polished, 
yellowish-red, front tibiae same color as femora, also polished and with 
a marginal fringe of white hairs; punctures of head and thorax rather 
fine and close, on abdomen sparse; antennae black, last joint flattened 
but not expanded; mandibles 4-toothed, straight above, toothed below 
at base, black, punctured, inner and outer teeth with reddish marginal 
lines; clypeus with very fine punctures, edge impunctate, polished, with 
a central emargination and having on each side two teeth; second joint 
of labial palpi slightly longer than first; maxillary palpi 3-jointed, bare, 
basal joint broadest, a white bristle at tip of third joint, this joint tapers 
from base to tip; 6th dorsal abdominal segment with a compressed 
carina, broadly, shallowly emarginate, edges slightly broken or irregularly 
serrate, apical carina thin with two long rounded distant teeth, yth 
segment not at all visible; cheek armed with a scale-like process. 
Redescribed from one specimen numbered 1417 and reported 
by Provancher to have been received from "Vancouver 
(Taylor)." This is a very peculiar species and does not belong 
in Megachile s. str. 
Anthemois addenda Cresson. 
1888: Add. Fauna Can. Hnt. Hym. p. 462 (acuta given as 
syn. of latimanus). 
I have examined one $ labelled Megachile acuta and pre- 
sume that the above reference is to this specimen. The speci- 
men is numbered 1113 and also bears the number 188. It is 
distinctly referable to Cresson 's M. addenda. 
Anthemois infragilis Cresson. 
1883: Le Naturaliste Canadien, v. XIV, p. 37, n. 5, cT 
(Osmia frigida) . 
1888: Add. Fauna Can. Ent. Hym. p. 325, d\ 462 (Osmia 
frigida) . 
1896: Dalla Torre, Cat. Hym. v. X, p. 395 (Osmia frigida, 
Prov. references, c? only). I have examined one specimen of 
this species, numbered 1061 and labelled Osmia frigida. It 
is a typical specimen of Cresson's infragilis. Provancher in 
1888, in his references to the above species on p. 324, described 
the female, but I have not seen the specimen nor can I recognize 
it from his description. 
[TO BE CONTINUED.] 
[ISSUED JANUARY 10, 1906.J 
