HYMENOPTERA. 173 



in the females, large and small workers, with a pectinate spine 

 at their apex. 



We have compared numerous examples of CEcophthora with 

 specimens of Pheidole providens, and cannot find the differences 

 mentioned by Professor Heer ; there is no difference in the 

 relative length of the first joint of the tarsus ; the mandibles are 

 equally acute at their apex ; in all generic characters they pre- 

 cisely correspond. We have not seen the males of either of the 

 types, but as other sexes agree in every particular, we have in- 

 cluded in one genus all such species as possess the characters 

 above given. 



1. Pheidole pusilla. PI. IX. figs. 18-20. B.M. 



CEcophthora pusilla, Heer, Ueher die Hausameise Madeira's, 

 1852; Ann. Sf Mag. Nat. Hist. ser. 2. xvii. 225 (1856). 



Hub. Madeira. 



2. Pheidole providens. 



Atta providens, Sykes, Trans. Ent. Soc. Lond. i. 103. pi. 13. f. 5, 



5 a-d ^ . 

 Pheidole providens, Westw. Ann. S,- Mag. Nat. Hist. vi. 87 (1841). 

 (Ecodoma providens, Jerdon, Madr. Journ.Lit.8f Sc. 108 (1851) ; 



Ann. ^- Mag. Nat. Hist. ser. 2. xiii. 50. 8 (1854). 



Hab. India (Poona). 



3. Pheidole pallidula. 



Myrmica pallidula, Nyl. Addit. Alt. Adno. Mon. Form. Bor. Eur. 



42; Fo7'm. Fr. et d' Alger, p. 97. 

 CEcophthora subdentata, Mayr. Einige neue Arneis. 143. 

 CEcophthora pallidula, Mayr. Form. Austr. 183. 1. 



Hab. Europe. 



4. Pheidole Malabarica. 



CEcodoma malabarica, Jerdon, Madr. Journ. Lit. Sf Sc. 107 

 (1851); Ann. S,- Mag. Nat. Hist. ser. 2. xiii. 49 (1854). 



Hab. India. 



5. Pheidole diffusa. 



CEcodoma diffusa, Jerdon, Madr. Jour a. Lit. Sf Sc. 109 (1851); 

 Ann. Sf Mag. Nat. Hist. ser. 2. xiii. 51. 9 (18.54). 



Hab. India. 



