194 Mr. II. H. Drucc on the Synonymy of 



XVI ri. — Notes on the Si/nonym)/ of Thecla spurina, Flew., 

 and Thecla ericusa, Hew. By HAMILTON II. DliUCE, 

 F.Z.S., F.E.S. 



Much confusion has been caused hy Ilewitson liavlui^ 

 described the male and female of both these species as distinct, 

 which is the more remarkable as the female only differs on 

 the underside by being paler in colour. Besides the specimens 

 in the National Collection I have examined those in Mr. God- 

 man's collection, amongst which are several co-types of 

 Ilewitson's which were formerly in Bates's possession and 

 several of his types. 



The first species described by Hewitson is Thecla spurina *, 

 the type of which (a female) is now in the British Museum; 

 it is in indifferent condition and without locality. There are 

 four females in Mr. Godman's collection (two Tapajos and 

 two Para) marked by Bates " spurina." These differ from 

 the type only by being rather darker and by the orange spot 

 between the tails on the upperside being less apparent, this, 

 however, varj'ing slightly in all four specimens. The 

 specimen referred to by Hewitson as being in Bates's collec- 

 tion, and which is labelled ^^ spurina^ Hew., type/' is, in fact, 

 T. ericusa, Ilew., of which an excellent figure is given 

 (fig. 162). 



We possess a single female from Bartica, British Guiana, 

 obtained by Mr. H. S. Parish, which differs from the Amazon 

 specimens only by being rather richer in colour, doubtless 

 due to its being a fresher specimen, and by the total disap- 

 pearance of the orange spot between the tails on the upper 

 surface. 



A few pages later is described T. siagira f, with two vars. 

 [a and h) . 



Mr. Godman's collection contains one male from Bates's 

 cabinet labelled '^ stagira" from Tapajos; also one female 

 labelled ^^ stagira" from Tapajos which I am quite convinced 

 is 'f. plan, G. & S.|, judging from the colour and jjattern 

 of the underside, also by the costal margin of the fore 

 wing being much more concave towards its middle than in 

 T. spurina ? . 



* Thecla spurina, Hew. 111. Diurn. Lep. p. 102, t. xxxix. figs. \-22, 123 

 (1867). 



t Thecla star/ira, Ilew. 111. Diuin. Lip. p. 11."., t. xxxix, figs. 120, 121 

 (18G7). 



\ Thecla pion, Godui. & Salv. Biol. Ceutr.-Aiii., Rhop. ii. p. oG, pi. liv. 

 figs. 28-30. 



