1890.1 233 



The cases run to 6 or 7 mm. iu length ; they are conical, much 

 curved, and much attenuated to the posterior end, which is truncate, 

 and filled up with a membrane pierced with a large central hole ; they 

 are smooth, composed of compactly arranged fine sand grains covering 

 an inner silken tube. The mouth end of the nymph cases is closed 

 with a membranous operculum, in which there is a long curved slit 

 placed towards one side. 



I have found these larvse not uncommon at a little stream where 

 it falls over a rock into a larger water. A favourite place of resort 

 ia under dead leaves quite out of the water, but of course everything 

 iu such a locality as that mentioned is charged with moisture. 



EXPLANATION OF FIGURES (Plate I). 



lABTA. 



1. Mandible, left from above (A, o. c. 3). 



2. do. right do. ( do. ). 



3. do. left from beneath ( do. ). 



4. do. right do. , ( do. ). 



5. Maxilla and Labium from beneath (C, o. c. 2). 



6. Labrum from above (A, o. c. 3). 



7. Antenna (C, o. c. 2). 



NYMPH. 



8. Labrum, from above (C, o. c. 1). 



9. Mandible from beneath ( do. ). 



10. Apex of Abdomen from above (A, o. c. 2). 



IV. — Beejeodes minuta, Linne. 



Larva : head rather large, broadly ovate, beset with numerous moderately long 

 hairs ; elypeus long and narrow, the usual constriction in the middle very slightly 

 marked ; triangular piece indistinctly defined. Antennae very prominent, placed on 

 a rounded base, long, cylindrical, with a hair which arises a little before the apex. 

 Labrum transverse, with six bristles on the disc, two small bristles in front, ciliated 

 beneath. Mandibles small, strongly ciliated within, and at apex without. Maxilla 

 with d-jointed tapering palpi (the blade in fig. II probably not correctly delineated). 

 Labium a blunt cone, with minute palpi, and densely hairy above. 



Prothorax very little broader than head, almost quadrate when viewed from 

 above, not produced at sides ; mesothorax hardly broader than prothorax, trans- 

 verse ; metathorax narrowly transverse ; all the thoracic segments beset with mode- 

 rately long hairs. 



Legs : as to length the pairs bear to one another the proportions of about 

 Hi — 22i — 30. The joints of 1st pair are much dilated, those of 2nd pair are long 

 and slender, and those of 3rd pair remarkably so, the tarsal claw in the last being 

 extraordinarily developed, and in length more than equalling the tarsus itself. The 

 coxae, trochanters and femora of all the pairs beset with rather long hairs, the inner 



