42 



BRITISH TYROGLYPHIDJE. 



Tierreich ' what must be considered the latest classifica- 

 tion of the Tyroglyphidge in order of date.* The Tyro- 

 glyphidse are treated as being a sub-family of the 

 Sarcoptidse, and are consequently called Tyroglyphinse. 

 The following is a translation. 



SUB-FAMILY Tyroglyphinae. 



HlSTlOSTOMA. 

 NODIPALPUS. 



LENTUNGULA. 



C Mandibles chelate 2. 



( Mandibles not chelate . . 1 Gen. 



( Maxillary palpus clavate at the distal end 2 Gen. 



i Maxillary palpus not clavate at the distal end 3. 



- Claws of the two front pairs of legs mounted 



\ on long peduncles which are attached at the 



3 side of the end joint (Tarsus) . 3 Gen. 



^ Claws never mounted on long peduncles, 4. 



y < "With anal suckers 5. 



(. J Without anal suckers 10 



,-Cephalo thorax divided from the abdomen by a 



\ furrow (constriction) 6 



J Cephalothorax not divided from the abdomen 



4 Gen. CHORTOGLYPHUS. 



C First leg of the $ greatly thickened and 

 < armed . . . .5 Gen. 



(.First leg of <$ not thickened or armed, 7. 

 f Anal opening and anal suckers surrounded by a 



ALEUROBIUS. 



< common chitinous annular sclerite 

 I. No such sclerite, 8. 



6 Gen. 



MEALIA. 



C Fourth leg of 

 (. Fourth leg of 

 C Abdomen of 

 < plate 

 (.Abdomen of < 



with suckers . 

 without suckers, 9. 

 ? with a chitinised 



7 Gen. TYROGLYPHUS. 



terminal 

 . 8 Gen. 

 . 9 Gen. 



HlSTIOGASTER. 



RHIZOGLYPHUS. 



HERICIA. 

 GLYCYPHAGUS. 



without such a plate 

 C ? with genital suckers, 11. 



| $ without genital suckers . . 10 Gen. 



C $ with a projecting Bur so, copulatrix at the pos- 



< terior end of the abdomen . . 11 Gen. 

 (. $ without such a bursa copulatrix, 12. 



C Cephalothorax divided from the abdomen by ;i 



< furrow (constriction) . . 12 Gen. SAPROGLYPHUS 

 (_ Cephalothorax not divided from the abdomen, 13. 



f Epimera of the first and second legs fused, form- 



j ing a continuous structure . . 13 Gen. CARPOGLYPHUS 



(.Epimera of the second leg fully isolated, 14. 



* " Dernodicidse und Sarcoptidse," by Prof. G. Canestrini and Prof. 

 P.Kramer, forming Lieferung 7 of "Das Tierreich," Berlin, April, 

 1899. Although the work bears the joint names of the two profes- 

 sors, yet the part relative to the Tyroglypliidse was written by Prof. 

 Kramer, and was completed by him before his death, but was carried 

 through the press by Prof. Canestrini and the Editor for the Acarina, 

 Dr. H. Lohmann. 



