442 



Derbyiella laminata, Lea. 

 A specimen from the Upper Endeavour River differs from 

 the type in having the upper-surface almost black, the pro- 

 thoracic punctures larger, and, except on disc towards base, 

 the contained setae rising above the general level. 



COPTOMERUS.^'+S) 



Dr. Gestro sent to me five specimens that were identified 

 by Mr. Pascoe as Coptomerns nigrinasus, Chev., when deal- 

 ing with the Austro-Malayan species in Ann. Mus. Civ. 

 QrenM^) They are from Somerset (as was the type), and I 

 believe them to be correctly identified. If so the original 

 generic and specific descriptions are very poor, as the abdomen 

 was not even mentioned, and is remarkable, as on each side 

 of the basal segment there is a conspicuous ridge commencing 

 behind the coxa, and the two meeting at the middle of the 

 apex. The mesosternal receptacle is strongly and suddenly 

 elevated above its support, cavernous in front, and bifoveate 

 behind ; its emargination also is peculiar, as instead of sweep- 

 ing round in an even curve, it has an angular notch on one 

 side of the middle, although this would probably not be seen 

 with the rostrum at rest. The femora are all strongly grooved, 

 and the hind pair are straight on their lower edge, but con- 

 spicuously angularly dilated at the outer base ; the four front 

 tibiae each have at the base a slight extension that projects 

 over the apex of the femur; but this is not conspicuous when 

 the legs are folded together. 



On reading over these comments on structure, it will be 

 noticed that they agree exactly with Amydala ahdominaUs, 

 and I have no hesitation in regarding Coptomerus as a 

 synonym of Amydala. 



CoPTOMERUS NiGRiNASUS, Chev. (now Amydala). 



Differs from abdominalis in being much smaller (the type 

 was 7 J mm., (50) the specimens before me measure from 4 to 

 6 J mm.) and differently clothed, and with the antennal club 

 much shorter. 



The male differs from the female in having the rostrum 

 with dense clothing halfway to the antennae, instead of at the 

 base only, and the portion in front opaque and densely and 

 coarsely punctured ; in the female the space in front of the 

 scales is shining, and with distinct and clearly-defined but 



(48) Chevrolat, Ann. Soc. Ent. Fr. (6), 1, 1881, Ixix. 



(49) 1885. 



(50) Possibly the head was included in the length given. 



