252 [October, 



Elytra coclileariform or ladle-ehapod ; stipes loosely folded longitudinally, and 

 costate at or near the anterior margin, the rib at the terminal expansion running 

 straight on to the end ; stipes and the said expansion concave on the under-side ; 

 the tip everted. Insertion of elytron extended longitudinally from directly above 

 the anterior coxa and below the pronotum to just in front of the upper anterior 

 angle of the base of the intermediate coxa below the mesonotum. When they are 

 depressed, the elytra tend to furl the wings. 



Wings well represented by previous authors, partly furled in this specimen, 

 minutely ciliated at the terminal and inner margins ; membrane, when moderately 

 magnified, stippled very finely and densely, but when magnified more highly (100 

 diameters) intricato-rugose, closely and delicately, and beset with extremely minute 

 erect hairs. 



Abdomen extended, slender, shorter than the wings and (reckoning the forceps- 

 basis) 9-jointed ; basal segment oblique, adnate dorsally to the thorax ; 8th segment 

 produced obliquely under the base of the terminal segment ; this last segment 

 squarely excised nearly to the base, the sides remaining and constituting compressed 

 bases terminated by the forceps-limbs. These are 2-3ointed ; basal joint elongate, 

 tapering posteriorly from the base, which is narrower than its support, and incurved 

 towards the apex ; 2nd joint clawlike, reflexed, nearly half the length of the former. 



deferring to Westvvood's woodcuts, cited above in the second 

 introductory paragraph, it may be noted that the anterior margin of 

 the vertex is not indicated in fig. 94, 1. His fig. 94, 2 of the head of 

 Elenchus from below differs in important particulars from the speci- 

 mens here described. The differences seem attributable to parts of 

 the mouth not being all in focus at once, and to the palpi having been 

 interposed between the eye of the draughtsman and the mandibles or 

 margins of the oral aperture ; perhaps, also, a recollection of the palpi 

 of Stylops (I. c, fig. 93, 2 and 3), or the method of illumination of the 

 object, contributed to artistic error. The difference noticeable be- 

 tween the antennsB here delineated and his fig. 94, 1 and 6, judging 

 from the description of U. Templetoni, Westwood, quoted by Saunders, 

 may be specific. 



The terms ligula and lahium are employed in the present paper 

 in accordance with the usage of Packard, regard being had to the place 

 of insertion of the palpi {cf., 3rd Eeport U. S. Ent. Commiss., 

 pi. xvii, 9). 



Eegarding the elytra as intrinsically notal outgrowths, it may be 

 argued that their relations to parts below them are of only secondary 

 importance in discussing the question of their being mesothoracic 

 appendages. In Elenchus the mesonotum being of minimum propor- 

 tions, and not affording sufiicient accommodation for its appendages, 

 the elytra unavoidably project their bases in advance of the lateral 

 extremities of the mesonotum, and so are approximated as closely as 



