BY ARTHUR M. LEA. 67l 



house had the sexes of Stephensii (dromedariiis) under examina- 

 tion, as in all the genera of the Mecistostylides that I have seen 

 the sexual differences of tlie I'ostrum and antennie are A-ery pro- 

 nounced and unmistakable. M, Lacordaire gave his generic 

 diagnosis from a male which he presumed to be that of Stepliertsi, 

 but in this he was certainly mistaken, the diagnosis being drawn 

 up from the male of Schonherri. I have three specimens which 

 agree so perfectly with Boheman's specific description of Stejihensi 

 and Schonherr's diagnosis of Protopalas that it is impossible that 

 I can be mistaken, and dissection proves them to be males; I have 

 also received notes and sketches of the type of dromedarius (see 

 these Proceedings, 1900, p. 538, pi. xxx., figs. l-"2). 



Protopalus cristatus, Pasc; I.e., No. 5573. 



^. Black, granules slights shining; antennte piceous-brown, 

 parts of the mouth (mandibles excepted) pale red. Clothing 

 much as in dromedarius., but the scales rather denser, and the 

 sutural crest of the elytra clothed with long sooty-brov/n set8e, 

 and without the tufts of paler scales at its apex and sides. 

 Pectoral canal feebly squamose. Funicle with a few long hairs 

 inwardly. 



Head as in dromedarius. Rostrum slightly longer than pro- 

 thorax, sides feebly and regularly incurved to middle from both 

 base and apex; feebly ridged along middle; each side with two 

 feeble grooves, the ridges separating them irregularly waved; not 

 very strongly punctate, the apex densely punctate except along 

 the middle; beneath with three feeble punctate ridges, tiie middle 

 ridge with a few small granules. Scape slightly shorter than 

 funicle, inserted at about one-fourth from apex of rostrum ; 

 funicle with 1st joint slightly more than half the length of 2nd, 

 and not twice the length of 3rd; 6th-7th feebly transverse. Pro- 

 thorax more rounded than in dromedarius, the median carina less 

 elevated in front, and the granules more numerous and regular. 

 ^cutellum smaller and narrower than in dromedarius. Elytra 

 about once and one-third the width of prothorax ; shoulders 

 thickened })ut scarcely produced outwardly, and the width across 



