90 IIYDRACARINA 



III Mnler to demonstrate the variability in the characters just mentioned the following 

 talile may l>e submitted of Eylais degencrata s. sir. and allied forms. 



( 1 ) Oral disc : 



wide (degencrata) 



medium width (censors, taurica) 



narrow {pscudorbiiosa, eregliensis, inicrostoma) 



(2) Posterior maxillary processes: 



shorter than pharynx (degencrata, variabilis, taurica. hispaiiica, asialica) 



as long as pharynx (pseudoriinosa, consors, eregliensis, lulcrostoiiia. siniiatrensis) 



(3) Intercapsular bridge: 



V-shaped (degencrata, angtilata, sumatrciisis) 



not V-shaped (all other forms) 



narrow (iiiter)iiedia) 



fairly narrow (microstoma) 



fairly wide (magna, galeata, consors) 



wide (variabilis, pseudoriniosa, eregliensis, taurica, hispanica, asiatica) 



(4) Projection of 3rd palp-segment: 



about 4 setae (pseudoriniosa) 



" 6 " (sitinatrensis) 



" 7 " (angulata, taurica) 



" 8 " (cotisors, microstoma) 



" 9 " (degencrata, variabilis, hispanica) 



" 10 " (asiatica) 



" 14 " (eregliensis) 



(5) Inside of 4th palp-segment : 



about 8 setae (degencrata: 3 spiniform, 5 pectinate) 



10 " (pseudoriniosa: 3 spiniform, 7 pectinate; eregliensis, microstoma: 



5 spiniform, 5 pectinate; taurica: 6 spiniform, 4 pectinate; siima- 



trensis: 4 spiniform, 6 pectinate) 

 13 " .(angulata: 10 spiniform, 3 pectinate) 



18 " (z-ariabilis: 10 spiniform, 8 pectinate; consors: 14 .spiniform, 4 



pectinate) 



19 " (asiatica: 5 spiniform, 14 pectinate) 



20 " (hispanica: 4 spiniform, 16 pectinate) 



(6) Out.side of 4th palp-segment: 



alxjut 5 setae (pseudoriniosa: 3 spiniform, 2 pectinate) 



9 " (angulata: 4 spiniform, 5 pectinate) 



10 " (taurica: 6 spiniform, 4 pectinate) 



11 " (hispanica: 6 .spiniform, 5 pectinate; variabilis: 11 spiniform) 



12 " (consors: G .spiniform, r> pectinate; degencrata: 4 spiniform, 8 



pectinate) 



13 " (eregliensis: 6 spiniform, 7 pectinate; microstoma: 5 spiniform, 



8 pectinate) 

 19 " (asiatica: 5 spiniform, 14 pectinate) 



