582 Coleo2')terological Notices, IV. 



the middle, with a long erect anteriorly bent horn before each coxa, 

 the coxae separated by scarcely more than one-third of their width; 

 in the female with a small but extremely deep excavation near the 

 anterior margin, bordered on each side by a longitudinal ridge, ex- 

 terior to which there is also a deep excavation, devoid of corneous 

 processes and with the coxa^ separated by fully two-thirds of their 

 own width. In the male there is a rounded very feebly impressed 

 spot near the base of the abdomen, which is abruptly nearly gla- 

 brous, and in which the ordinary scales become semi-erect and each 

 deeply split into two or three hair-like processes. Length 2.1-2.7 

 mm.; width 1.0-l.fi mm. 



New York, Florida, Nebraska, Arkansas and Arizona. The 

 sexual modifications in this small group of species are remarkable, 

 especially in the divergence of prosternal impression, and in degree 

 of separation of the anterior coxae. 



7 Centrinus altootectlis n. sp. — Rather broadly oval, convex, black, 

 densely and uniformly clotlied with rather wide white scales, which are but 

 slightly broader and denser beneath. Head and base of the beak squamose, 

 the beak strongly, evenly arcuate and slender in both sexes, but scarcely 

 longer than the head and prothorax in the male, and fully one-half as long 

 as the body in the female; antennfs in the male with the basal joint of tlie 

 fnnicle as long as the next three, the second small, but slightly longer than 

 the third, three to five each a little longer than wide, the club small abrupt, 

 short, oval, scarcely longer than the preceding three joints together ; in the 

 female the club is less abrupt, larger and more elongate, with the basal joint 

 of the funicle barely longer than the next three. Prothorax fully one-half wider 

 than long, the sides distinctly convergent from the base and broadly arcuate, 

 rather strongly constricted behind the apex, the latter sometimes almost tubu- 

 late; base transverse and straight, the median lobe small but very prominent; 

 disk uniformly and very densely punctate and squamose. Scutellum very 

 small, almost concealed by the vestiture. Elfjtra hemi-elliptical, a little 

 wider than the prothorax and twice as long in the male, but relatively dis- 

 tinctly shorter in the female ; humeri moderately prominent ; strife rather 

 fine, very deep, the intervals flat, three or four times as wide as the strife, 

 densely punctato-rugulose. Prosternum in the male with an elongate-oval, 

 extremely deep excavation, the coxse separated by one-half of their own 

 width ; in the female, with a small rounded very deep pit just behind the 

 apical margin, also somewhat impressed laterally as in jiirumnus, and with the 

 coxpe separated by two-thirds of their own width. Length 1.75-2.5 mm. ; 

 width 0.7-1.3 mm. 



Florida, Texas (Columbus). 



In the male there is a long very slender finely acuminate horn 

 before each coxa, the process being inclined forward and very feebly 



