90 Mr. H. St. J. K. Donisthorpe on 



wing, longl'5-2'5 mm.; upper end of trans verso-medialis to 

 lower end of basalis 1'5— 2*5 mm. ; lower side of discoidal 

 cell '2-*3 mm. ; cubital cell, long -7-1 rhm. 



There are several larger specimens which may be the 

 females of this species, this sex being, on that view, larger 

 than the male, as in some of the subgenera of A cant homy op s ; 

 some are dealated, others winged. One specimen [(b. 106), 

 I. 10097)] is very perfect, showing well the segments of the 

 thorax and gaster. It possesses the small head and discoidal 

 cell of the smaller specimens, as well as a similar wing- 

 neuration. Its measurements are: — Long 4'5 mm.; fore 

 wing 4 mm. ; hind wing 3 mm. ; transverso-medialis to 

 basalis *6 mm.; discoidal cell, lower side "3 mm.; cubital 

 cell, long l'l mm. 



A few specimens possess a larger discoidal cell, and agree 

 with Cockerell's var. a ; in specimen (b. 61), I. 9082, a 

 female 4'5 mm. in length, the lower side of the discoidal cell 

 is *7 mm. long. 



Oligocene at Gurnet Bay [Brodie, A' Court Smith, and 

 Hooley). 



Plesiotype, (b. 72), I. 9756 (PI. V. fig. 8). 



Ergatotype, (b. 56), I. 9744. Other workers, (b. 101), 

 I. 10248 ; (b. 104), I. 9688 ; (b. 107), In. 17250 ; (b. 108), 

 I. 8722; (b. 109), I. 9483; (b. 116), H. 168 ; (b. 117), 

 H. 450. 



Cockerell's var. a is represented by: (b. 7), 1.81026 ; 

 (b. 15), In. 17202 ; (b. 11), In. 17298. 



Other specimens : — 



I. : 7286, 8539, 8677, 8678, 8681, 8684, 8698, 8719, 8724, 

 8728, 8735, 8736, 8737, 8740, 8759, 8764, 8765, 8889, 8927, 

 8972 (1). 105, b. 113), 8994, 8999, 9013, 9037, 9039, 9142, 

 9163, 9168, 9184, 9218, 9231, 9242,9246,9250,9266,9275, 

 9281, 9285, 9295, 9299, 9332, 9351,9353,9356, 9369,9386, 

 9406, 9511, 9526, 9578, 9584, 9593, 9632, 9653, 9667, 9677, 

 9718, 9723, 9746, 9751, 9762, 9763, 9774, 9778, 9796 

 (PI. V. fig. 9), 9823, 9847, 9869, 9889, 9900, 9908, 9918, 

 9930, 9958, 9996, 10005, 10006, 10018, 10040, 10103, 

 10120, 10123, 10127, 10185, 10215, 10256, 10258, 10265, 

 10341. 



In.: 17066, 17084, 17106, 17175, 17181, 17203, 17213, 

 17227, 17250, 17281, 17318, 19602. 



H.: 139, 189, 377. 



Leucotaphus cocktrelli, sp. n. 

 Two large specimens agree in structure and neuration with 



