( xcviii ) 



same place, on Dec. 20, and again on Dec. 21, another 

 Mutillodd Carabid Polyhirma sp. was captured with its mimic 

 Dromica (Myrmecoptera) n\ umanni, Kollar. The pairof Dec. 21 

 bear the note " Taken on same stretch of road." About a 

 year later, on Nov. 20, 1917, at Lulanguru, a large species 

 of Polyhirma, and in this case with the black-and-white 

 Mutilloid pattern more sharply and clearly expressed in spite 

 of its disproportionate size, was taken with it^ mimic lJr<mi)c<( 

 purpurea, Bates, and two examples of Dromica sp., the mimic 

 of a smaller Mutilloid Polyhiima taken the day before. The 

 mimetic associations between the beetles are suggested on 

 the accompanying labels, including the probably synapo- 

 sematic relationship between the two Carabid models. In 

 all these Polyhirmas, except the largest species, the 

 Mutilloid black and white is dully expressed, as also in 

 the mimics, while in the mimic of the largest species it is 

 evanescent. 



The splendid Mutilloid mimic, the Carabid, Eccoptoptera 

 eupricollis, did., which caused Dr. Mar-hall "to hesitate 

 more than once before venturing to handle it" (ibid., p. 512, 

 pi. xvii, fig. 11), also deceived Capt. Carpenter, lor his note 

 on a specimen of Dec. 8, 1915, on the bank of the Kagera 

 River, near Ngarama, about 37 miles W. of the Victoria 

 Nyanza, is : " Mutilloid ! Quite took me in," and again 

 " very Mutilloid " on a Ndala specimen of Dec. 16, 1916. 

 The female of Dolichomutilla guineesis, F., a very perfect 

 model, except that its thorax is black instead of the reddish 

 colour so common in Mutillidae, was taken at Xdala a tew 

 weeks before, on Nov. 13. 



" About at the beginning of December we had a burst of 

 rain which left large puddles on the dry roads. Almost 

 immediately after one saw Crabs running about! It seemed 

 strange to see them away from any large body of water, 

 though there arc permanent water-holes. A large puddle 

 which I had noticed to have been frequented by craba on 

 Dec. 13th — at which time it had been just formed -was, on 

 • Ian. 3rd. reduced to a mere cupful of water, in which I found 

 a young crab, very minute. Its metamorphosis cannot take 

 very long for on Dec. 2nd the puddle had not been formed. 



