Genus Xylocopa. 253 



lowing differences in the only example I have seen : the 

 head is shorter and rounder, the pubescence on the head 

 and thorax white, a little tinged with fulvous on the disk 

 of the thorax ; the two apical segments of the abdomen 

 are densely covered with bright fulvous pubescence ; it is 

 altogether a shorter and more compact insect. The spe- 

 cimen is in the finest condition. 



4. Xylocopa Cantabrica. 



Xylocopa cantahrita, St. Farg. Hym. ii. p. 193, ^, ?. 



Xylocopa sinuatifrons, Spin. Ann. Soc. Ent. France 



(1843), 2nd ser. i. 143, $. 



Xylocopa Cantabrica, Gerst. Stett. Ent. Zeit. (1872), 



p. 280, $, ^. 



Female. — Black and shining ; head not quite so wide 

 as the thorax, closely punctured ; the thorax more dis- 

 tantly so, the disk smooth ; the pubescence on the head 

 and thorax griseous ; on the tibiae, tarsi and apex of the 

 abdomen the pubescence is fulvous ; wings flavo-hyaline, 

 with a fuscous cloud at their apical margins. The male 

 resembles the female, but is more pubescent. Length 

 8 lines. 



Hab. — North of Spain. 



C ""^ 5. Xylocopa valga. 



Xylocopa valga, Gerst. Stett. Ent. Zeit. (1872), 

 p. 276, $, $. 



Closely resembles ^Y. violacea, being black and having 

 dark-violet wings ; the female is distinguished from that 

 species by having the third joint of the antennte shorter, a 

 little stouter, and only equal in length to the two following- 

 joints united ; A^ violacea $ has the third joint as long 

 as the three following united ; the head is proportionably 

 narrower than in X. violacea, and less swollen behind the 

 eyes. The male I have not seen, but it is at once known 

 from that of A', violacea by its unicolorous antennae, the 

 two penultimate joints being reddish-yellow in A", violacea ; 

 the latter species has the posterior coxte mucronate at the 

 apex, the tibise arcuate and appendiculate at the apex ; in 

 A", valga the apex is simple. Dr. Gerstacker has pointed 

 out all the distinctive characters of the sexes. 



Bab. — Bozen ( Switzerland ?) : Crimea ; Trieste ; Syria 

 (Mount Hermon). 



