252 Rev. F. D. Morice on Andrcna taraxnci, etc. 



species in Andrcna, I think it would be premature to 

 speak at all positively about the limits of the group to 

 which humilis belongs, though hypothetically I would in- 

 clude in it the ten species with which we are dealing at 

 present, and would also suggest a special closeness of 

 relation between — 



(a) nigro-olivacea and livens. 



{})) tmncatilabriSyfcrrugineicrus and (?) giraudi. 



{/) taraxaci, cwtivalvis, senecionis, stahiana and (?) humilis. 



Descriptions of the New Species. 



Andrena curtivalvis, n. sp. A. taraxaci, Giraud 

 simillima sed minor. 



Diffei't ab ea ^ valvula ventrali multo breviore apice liaud 

 truncato sed rotundato $ pilis capitis ac pronoti magis nigricanti- 

 bus, pitnctis mesonoti levioribus magisque dispersis, alxlomine 

 graciliore. (Algeria.) 



Andrena stabiana, n. sp. Species prsecedenti simil- 

 lima. 



Differt et ab ea et ab A. taraxaci Giraud ^ valvula ventrali in 

 apicem bilobatum dilatata, pilorum eiusdem dispositione alia (his 

 scilicet qui segmenti processus laterales vestiunt ultra reliquam 

 pilositatem longe excurrentibus), apice ipso segmenti pjene nudo : 

 9 scutello propter reticulationem distinctissiraani opaciore, fimbriis 

 analibus abdominis minus erectis. 



