44 Coleopterological Notices, III. 



nearly as in canadensis. The sexual differences throughout the 

 bod}' are extremely and unusually marked, and in the series before 

 me, the females are decidedly smaller than the males. 



IPOCHUS Lee. 



The chief differences between this genus and Moneilema, apart 

 from the tribal characters relating to the support of the labrum and 

 size of the body, are the shorter and broader front, presence of long 

 tactile flying hairs on the body legs and antennae, and the great 

 divergence in form of the sexes. The last of these is one of the 

 most remarkable of the generic peculiarities of Ipochus, the male 

 being slender, strongly convex, with oval elytra, subglobular pro- 

 thorax and constricted neck, and the female more robust, subparallel, 

 the prothorax transversely subquadrate and the neck scarcely at all 

 constricted, the head being more deeply inserted. It will be observed 

 therefore that the sexual differences are directly the reverse of those 

 of Moneilema, in which, when these are at all pronounced, the male 

 is more robust parallel and compact than the female, and with a 

 larger prothorax. 



The following species are indicated by the material at hand : — 



Elytra with three transverse, irrregular and more or less narrow fascise, the 

 first near the base, the second at apical third (viewed vertically), and 

 the third on the apical declivity, extending semi-circularly from the side 

 margins, crossing the sutnre midway between the second band and the 

 apex ; recumbent pubescence rather sparse ; pronotum very coarsely, 

 deeply and not closely punctate, with two pairs of small discal pubescent 

 spots. Elytra broadly, deeply sinuate at apex when viewed along the 

 longitudinal axis of the body. Length 4.5 mm. ; width 2.0 mm. (San 

 Diego.) ..fasciatus Lee. 



Elytra with two more or less narrow transverse fascise, which are irregular 

 and zigzag in form, the first at the base, the second at apical fourth 

 (viewed vertically) ; in addition a small elongate-oval sutural spot near 

 the apex on the declivity. Body sparsely pubescent, the pronotal punc- 

 tures coarse, moderately close, distinct, the integuments shining. Head 

 finely, sparsely punctate ; antenna?, about as long as the body, the outer 

 joints feebly annulated at base. Prothorax one-fourth wider than long, 

 the sides rounded, more convergent toward base, the latter much narrower 

 than the apex ; discal pubescent spots evanescent, the fine pubescence 

 very sparse, short and inconspicuous. Elytra one-third longer than wide, 

 in the middle one-third wider than the prothorax ; sides rounded, the 

 apical portion of the disk perpendicular and deep ; apex not appreciably 

 emarginate when viewed longitudinally. Abdomen sparsely pubescent. 



