26 



Transactions of the Society. 



1. 



BRITISH FRIDERICIAS. 



Grouped according to the ninnher of SeUe. 

 I. BiSETOSA (Setae not exceeding two per bundle). 



F.pulchra Friend (2G) 



F. paroniana Issel (19) 

 F. connata Bret. (14) 



Spermathecffi without diverticula. 

 Spermatbecfe with two diverticula — 

 i. Segments 30-40 ; large anucleate 



corpuscles 



ii. Segments 40-50 ; salivaries twisted . 

 iii. Segments 50-60 ; diverticula cunei- 

 form F. blsetosa licv. (5) 



II. QuADKiSETOSA (Setje not exceeding four per bundle). 



Spermathecffi without diverticula . . . F. hidbosa Rosa (8) 

 Spermathecaj with two diverticula — 

 i. Segments 50-60, blood colourless — 

 a. Salivaries simple, long. 

 y8. Salivaries entire or bifurcate 

 ii. Segments 8(i-100, blood red . 

 Diverticula sessile, four or more — 

 i. Segments ;>0-40, length 5 mm. . 

 ii. Segments 40-50, length 8 mm. . 

 Spermathecffi with auricular diverticula 



III. MuLTiSETOSA (Set^e from four to ten per bundle). 



SpermatheciB without diverticula — 



F. variata Bret. (27) 



F. helvetica Bret. (23) 

 F. teydigl Yegd. (20) 

 F. magna Friend (11) 



F. hvmdis Friend (24) 

 F. callosa Eisen (22) 

 F. aurita Issel (13) 



1. 

 ii. 



\n. 



Segments 25-30, length 5-6 mm. 

 Segments 40-50, length 8-15 mm. — 



a. Salivaries unbranched . 



f3. Salivaries branched 

 Segments 55-60, length 15-20 mm.. 



2. Spermathecse with two diverticula — 



i. Salivaries with two sets of twigs . 



ii. Salivaries branched 



iii. Salivaries much branched 



3. Spermathecfe with more than two diverti- 



cula — • 



i. Three diverticula /'. uhnicola Friend (3) 



Two to four diverticula — 



a. Salivaries long, branched . 

 /3. Salivaries with dichotomous 



ends 



Four to eight diverticula — 



a. Salivaries much branched . 

 p. Salivaries long, unbranched . 

 Many diverticula — 



a. Seta? 4-8 



/?. Setas 0-6 



Glands for diverticula .... 



]i. 



iji. 



IV. 



F. hretscheri South. (12) 

 F. valdensis Issel (18) 

 F. alba Moore (30) 



F. perrieri Vejd. (9) 

 F. agricola Smith (7) 

 F. piohjchseta Bret. (15) 



F. michaeheni (17) 



F. galba Hoffm. (2) 



F. ratzeli Eisen (6) 

 F. anglica Friend (29) 



F. hegemon Yejd. (10) 

 F. niicrocara Friend (28) 

 F. lobifera Vejd. (1) 



