Mrs. M. K. Thomas on DeriJea, Westwood. 389 



breadth 4"2 ; breadth of braia-case behind zygomata 14; 

 interparietal 8'8x3'2; palate length from henselion 10; 

 diastema 7*7; length of upper molar series 3"1- 



Hab. Enkeldorn, Mashunaland. 



Type: B.M. no. 97. 2. 16. 2. Collected by J. ffoUiott 

 Darling, Oct. 10, 1896, and presented by him to the British 

 Museum. 



XXXVII. — Note on Deridea, Westwood (Lyttidte), with the 

 Description of a new Species. By Mrs. M. K. Thomas. 



Deeidea was described by Westwood as a new genus, which 

 he referred with doubt to the family Helopida?, probably 

 through a mistaken conclusion that the claws were simple. 

 Fairmaire *, in remarking on this, discusses the position that 

 ought to be assigned to the genus, and observes that at the 

 first glance it approaches Neniognatha, but differs by the 

 claws of the tarsi being simple, and considers therefore it 

 shonld be placed at the end of the Cantharidte, leading up to 

 the (Edemeridge. 



This is, however, an error on his part, as the claws really 

 are divided, although not pectinated, as in Nemognatha. 



Furthermore, from a supposed resemblance to an insect he 

 terms Leptura tenuicolhs, Fabr. (placed by Schonherr among 

 the Zonitidse), he throws doubt on the validity of Deridea 

 curculionoides as a species. It is, however, quite different to 

 the specimen labelled (and apparently correctly) Zonitis 

 tenuicollis in Mr. Bates's collection. 



Deridea iiotata, sp. n. 



Bead glabrous, anteriorly black, posteriorly dark rufous- 

 coloured. 



Antennce black, delicate, slender, not very long. Tlie fii-st 

 joint long, the second very short, the third equal to the first, 

 the remainder gradually diminishing in length. 



Prothorax bright rufuus-coloured, elongated, widening 

 posteriorly, glabrous, thinly punctured ; no median line ; 

 slightly pubescent, with sparse white or pale yellowish hairs. 



Elytra finely punctured, shining, with pale yellow or white 

 pubescence ; nerves marked, entirely rufous-coloured, with 

 the exception of the posterior half of each elytron, along the 

 outer edge of which there is a narrow black band. 



* Ann. Soc. Ent. France, 1891, p. 265. 

 Ann. & Mag. X. Uist. Ser. 6. Vol. xix, 28 



