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DESCRIPTION OF PLATES. 



Plate XXXIir. 



1 . liitkocbclcia iiiirabilis. female. 



2. Bnichomorpha sp?, containing- the ruptured I'arval sac of 

 Eiikocbclcia. Several sacs are often found on a single hop- 

 per, and both nymjjhs and adults (long- and short-winged 

 ali'ke) are affected. 



3. Phryiioplirycs sf^. ; the left tegmen and rudimentary wing 

 are displaced and show the empty sac, from wdiich Clial- 

 cogoiiatof>iis dccoraliis was bred. 



4. Nyniph of Tarfcssiisl' in a much collapsed state, from the 

 sac on which was bred a female Prosantcon chclogyiioidcs. 



Plate XXXIV. 



T. Euriiioscoprts sf^., nymph in ventral aspect, showing the 

 emptv larval sac of a Ncocluiogynus destructor, inserted in 

 the usual position behind the posterior coxae. 



2. Eulcimonios sp. with empty larval sac of Ncochclogymis 

 coriacciis inserted in the neck. 



3. .Ithysaiiiis ciirtisii, with emptv sac of Xcogoiiatopus hnin- 

 ucsccus placed on the abdomen. The left tegmen is some- 

 what displaced by the parasite. 



4. Libiinila sp. nymph, shrunken and distorted, bearing two 

 empty sacs of Haplogoiiatopiis aiiicricaiuis. 



5. Collar pcraciitiis, nym])h much shrunken, with em)it\- sac 

 of Paradryiiiits koebcici Ibeneath the left tegmen. 



6. Pcrkiiisiclla saccJiaricida, nymph much collapsed and dis- 

 torted, bearing two emptv sacs of Psciidogonatopus dich- 

 roinns. This hopper is an Hawaiian example, that was in- 

 fected by a parasite imported from Australia, w'hcre it at- 

 tacked small graminicolous Libiiriiia. 



7. Stciiocraiius dorsalis, nymph with emptv sac of Psciidogona- 

 fopiis stciiocrani, attached between the bases of the teg- 

 minal pads. 



8. Pn'"i'csa aphorphoroidcs? nymph much shrunken, and with 

 the long fan-like caudal fil'aments removed, bearing two 

 sacs of Paradryi)ius I'cnator, one beneath the tegminal, the 

 other beneath the alar pad. In life the beautiful fan-like 

 filaments are turned back over the 'body, the parasitic 

 sacs are only seen When the tail is depressed. 



