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X. On the larv.v of Trictenotoma cliildreni, Gray, Melitt- 

 omma insulare, Fainnaire, and Dascillus cerviuus, 

 Liuu. By C. J. Gahan, M.A , F.E.S. 



[Read ]\[arch I8tli, 1908.] 



Plate VI. 



In view of the divergence of the opinions that'were at one 

 time held in regard to the sj'stematic position of the 

 Trtctenotomi(I/v, a knowledge of the larvse of this family 

 must prove to be interesting, and I am now fortunately in 

 a position to be able to give some account of a larva which, 

 without doubt, belongs to the family. This larva was 

 received from the late M. Henri Rouyer, by whom it was 

 found in Java "by the side of the debris of pupa3 and 

 imagines " of Trictenotoma cliildreni, Gray. 



A description is given also in this paper of the larva of 

 Meliitomiiia, Murray, a genus of LjimcxijHdir?, and the 

 opportunity has been taken to add a figure of the little- 

 known larva of Da^ci/Ins cervinm, Linn., which was described 

 by Erich son in 1841. 



1. The larva of Trictenotoma cliildreni, Gray. 



The larva is 12 centimetres (= 4-7 inches) in length, its general 

 colour pale yellowish-white ; the head, which is strongly exserted, is 

 reddish-brown with the front margin and the robust mandibles, 

 black. The head and anterior segments are somewhat flattened and 

 depressed ; the legs well developed, and rather widely separated by 

 the broad flat sternal plates. The general appearance would be very 

 suggestive of the larva of Fytho or Pyrochroa were it not for the 

 difi"erence in form of the terminal abdominal segments. The 9th 

 segment is narrower and somewhat shorter than the 8th, is obtusely 

 rounded behind and carries at the apex two backwardly produced 

 processes which are curved upwards and sl)arply pointed at the end. 

 The anus is placed transversely on the ventral side of this segment 

 at about one-third, of its length from the. end. 



Head. Porrect, strongly exserted,. transverse, rounded at the 

 TKANS. ENT. SOC. LOND. 1908. — PART II. (SEPT.) 



