CryptophagidtB.'] CLAVICOBNIA. 307 



CRYPTOPHAGID.E. 



This family contains between 'twenty and thirty genera, which are 

 very widely distributed, but appear, as far as is at present known, to 

 be much more characteristic of cold and temperate than of tropical 

 countries ; they are, as a rule, very small and obscure insects, and may 

 be known by the following characters : Antennae inserted a little before 

 or between the eyes, distant or approximate, 11-jointed, terminating 

 in a 3-jointed, very rarely, 2 -jointed club, thorux with the sides margined 

 or denticulate ; elytra covering abdomen; abdomen composed of five 

 free segments, of which the first is the largest ; anterior coxal cavities 

 open behind (except in the Diphyllina) ; all the coxae more or less 

 distant, the anterior pairs transverse and oval, and the posterior pairs 

 more widely distant, semi-cylindrical ; upper surface more or less setose 

 or pubescent, sometimes very strongly so ; tarsi 5-jointed, in some genera 

 heteromerous in the males. 



I. Anterior coxal cavities closed behind ; antennae with a 3- 



or 2-jointed club DIPHTLLINA. 



II. Anterior coxal cavities open behind; antennae with a 3- 

 jointed club (except in Ceenoscelis, where it is apparently 



2-jointed). 



5. Tarsi 5-jointed, apparently 4-jointed, the fourth joint 

 being very small and obsolete, second and third joints 



lobed TELMATOPHILINA. 



ii. Tarsi distinctly 5-jointed in both sexes, or heteromerous 

 in the male ; second and third joints not lobed. 



1. Antennae inserted at the sides of the forehead, broadly 

 distant at base ; thorax with the sides usually denticu- 

 late ; upper surface more or less setose CRYPTOPHAGINA. 



2. Antennae inserted on the forehead between the eyes, 

 approximate at base ; thorax with the sides not denticu- 

 late ; upper surface not setose ATOMAEIINA. 



DIPHYLLINA. 



This tribe has by most authors been placed under the Mycetophagidje, 

 but appears to bear a far closer relation to the Telmatophilina, which it 

 resembles in the fact that its members have the tarsi 5-jointed (the 

 fourth joint being very small), and more or less lobed beneath; it differs 

 from the Telmatophilina in having the elytra furnished with distinct 

 punctured striae, and the anterior coxal cavities closed behind ; the 

 three first joints of the tarsi are feebly lobed beneath, and the first joint 

 is shorter than the second, whereas in the allied tribe the third joint is 

 strongly lobed, and the second feebly lobed, the first being as long as 

 the second, and not lobed; the tribe contains two or three genera, ol 

 which Marginus, Leconte, is now merged with DiplocoeJus. 



I. Club of antennae 2-jointed . ; . DIPHYLLUS, Steph. 



II. Club of antennae 8-joiutcd DIPLOCXELTJS, Guer. 



I 2 



