4 CLAVICORNIA. 



with the last three joints forming a club ; maxillae with two lobes ; 

 anterior coxae globular ; thorax as broad as elytra, margined at sides ; 

 elytra entirely covering abdomen ; legs short and rather stout, tarsi 

 5-jointed, claws armed with a tooth at base ; size small. 



Cooclnellidce. Form usually rounded, seldom oval, convex, often 

 subhemispherical, usually shining and glabrous, but in some genera 

 strongly pubescent ; antennae usually 1 1-jointed, terminated by a more or 

 less distinct club, inserted on the forehead near eyes ; mandibles, as a 

 rule, concealed ; maxillae with two lobes ; thorax transverse and usually 

 short, anterior coxal cavities, except in one or two genera, closed behind ; 

 elytra covering abdomen, which is composed as a rule of five free ventral 

 segments (sometimes of six or seven), the first being furnished with 

 more or less distinct coxal lines ; legs short, more or less retractile, 

 tarsi apparently 3-jointed, but really 4-jointed, the third joint being very 

 minute and concealed in the lobes of the second joint ; claws appendiculate 

 or toothed. 



Entlomychidoe. This family is closely allied to the preceding ; 

 the species that belong to it, however, are more elongate in form and 

 usually are furnished with a transverse groove before base of thorax and 

 a longitudinal impression on each side ; the antennae and legs are longer 

 and the anterior coxal cavities are always open behind ; the chief 

 difference, however, appears to lie in the fact that the claws are simple 

 and the first ventral segment has no coxal lines ; the tarsi are plainly 

 4-jointed,* or apparently 3-jointed, the third joint being very small 

 and concealed. 



Erotylidao. The members of this family are closely allied to the 

 preceding, but may be easily distinguished by having the anterior coxal 

 cavities closed behind ; from all the species of the Endomychidae except 

 the Mycetsenia, they may be known by having the tarsi distinctly 

 4-jointed, and, occasionally, 5-jointed ; the antennaB are 1 1-jointed and 

 are inserted at the sides of the forehead, with the last three or four joints 

 forming a distinct club ; the thorax is distinctly margined ; the elytra 

 completely cover the abdomen, which is composed of five usually equal 

 segments ; the legs are moderately long and the claws are simple. 



Colydiidae. The members of this family are distinguished by their 

 usually elongate or cylindrical form, small globular anterior and middle 

 COX33, and simple 4-jointed tarsi ; the upper surface is, as a rule, shining 

 and glabrous ; the antennae are inserted under the margin of the front, 

 and are short, 10- or 1 1-jointed, rarely 8-jointed, and terminate in a 

 email club ; the anterior coxal cavities are almost always closed behind ; 

 the elytra always cover the abdomen, which is composed of five ventral 

 segments, the first being the largest. 



* This is only the case with the Mycetseiua which might perhaps, with adrantagc, 

 be formed into u separate family. 





