NEW OR LITTLE- KNOWN ACARI. 991 



dorsal part and a ventral projecting portion split into six fine 

 hairs. 



Measurements. (S : length (including palpi) 'SS mm. ; greatest 

 width -147 mm. 5 : length (including palpi) •51-54 mm, ; 

 greatest width -2;^ 5 mm. 



llost-flant : Sorghum, India. Mr. Y. Ramachandra Rao, of 

 the Coimbatore Agricultural College, informs me that this mite is 

 sometimes a serious pest of Sorghum or cholam (Andropogon 

 sorghitm). It is found in large colonies under the surface of the 

 leaves and inci'eases rapidly in numbers. The attacked portions 

 turn bright red as if attacked by rust. The mite is greyish greeu 

 in colour when alive. 



Tetranychus crat^gi Hirst. 



F. Zacher asserts (Mitt. J3io]. Reichs. f. Land- u. Forst. Berlin, 

 Heft 21, Dec. 1921, p. 91)tha,t the species of Red Spider described 

 by myself under the name Tetrani/chus crativgi is a synonym of 

 his Teiranyclma vieniiensls. The description of T. craia'gi wa& 

 published in the Proc. Zool. Soc. July 1920, wliereas that of 

 T. viennensis was published in Zeitschr. angew. Entom. Berlin, 

 vii. No. 1, September 1920. lb will be seen that T. craUvgi has 

 the priority and that T. viennensis is the synonym. It is true 

 that Zacher had circulated an earlier typewritten document 

 which does not bear the impression or stamp of any Society or 

 publisher, nor even the name of the place at which it was issued. 

 It bears the date " 17. Mai 1920 " and is entitled "Vorluutige 

 Diagnose-n einiger neuer Spinnmilbenarten." There are several 

 corrections in pencil in the copy in my possession. It is quite 

 evident that this document does not constitute publication and 

 that the three new species mentioned in it are not valid ; in fact, 

 it would seem that Zacher realises that this is so himself, for he 

 i"edesciibes all three species as new at a. later date in Zeitschr. 

 angew\ Entom. Berlin, as mentioned above. 



Anychus latus Can. & Fanz. ? (Text-figs. 17 & 18.) 



c? . Collar trachejB of a simple type (see text-fig. 17 d), ending 

 in a single long cell. Hairs or setse on dorsum twenty-six in 

 number (not including the finer hairs near the anus) ; these dorsal 

 hairs are stiff, being rod-like and slightly pectinated. Penis 

 shaped as shoAvn in figure, being strongly curved and claw-like. 

 Palp with the terminal sensory finger represented by a conical 

 spine, which is only about half the size of the two usual stiff red- 

 like setae present close to it; dorsal sensory finger short and 

 slender. 



Tarsi of legs apparently without any claw, but the usual tenent 

 hairs, which are four in number in the male of this species, are 

 present, being situated on a short peduncle. Besides the ordinar}'- 

 rather long and slightly-feathered hairs on the legs, there are a 



