96 



Records nf the Iiidiaii Miiscuiu. 



\OL. XXII, 



built, five-jointed, arising from the outer ends of an epicranial 

 ridge bordering the crescentic line which marks the division of the 

 epicraniuin from the clypeus ; first and second joints (scape and 

 pedicel) stouter than the rest, the pedicel about twice as long as 

 the scape, its surface pitted all over ; of the distaUa, the third joint 

 is as long as the fourth and fifth together, and slighty longer than 

 the pedicel; the fourth joint is slightly narrower than the third, 

 while the fifth is much narrower, fusiform, and ending in a minute 

 conical sense-organ. A deep groove separates the clypeus from the 

 lahriim, which is wide, and arched slightly from side to side. 



The mandibles are shown in text-fig. i. Each mandible is short 

 with a broad base, and carries two series of teeth, one apical and 



Text-fig. i. 



Mandibles of the larva of Epiophlebia laidlann n. sp. n. righl ?ii,indil)ld 

 viewed from the inner side ; b, left mandible, similarly viewed bm with the t\\( 

 lobes somewhat split apart. 



one internal. They were studied by laying the larva on its back 

 and pressing each mandible in turn outwards with the point of a 

 dissecting needle. In doing this, the left mandible split apart 

 down its middle, thus exposing more clearly the separate teeth 

 forming the two series. The two mandibles dift'er greatly as may 

 be seen from the figure. The right mandible (text-fig. \a) has 

 five prominent teeth in the apical series, all more or less conical, 

 but the two end ones somewhat narrower than the others: the 

 internal series consists of four larger teeth, conical, with sotnewhat 

 rounded apices, together with a much smaller fiattened tooth 

 appressed to the surf ace of the outermost larger tooth, two smaller 

 teeth placed internally from the fotu'th large tooth, and a large 



