466 



bridgii. — Ar. punctoria Vill. 1789 ') is probably a separate, more 

 southern species. 



The Eev. Mr Cambridge has kindly lent me the type-speci- 

 men, a cT ad., of D. rubicunda Blackw. , and informs me that he 

 has received an Italian specimen of it from Dr L. Koch under the 

 name of D. crocota C. Koch: as C. Koch's description of D. crocota 

 suits it very well, and Dr Koch possesses the type-specimens of D. 

 crocota, there can be no doubt of the correctness of this identification. 

 D. crocota is very closely allied to a species from Algeria, of which 

 I received one male and two females of Mr H. A. Euren, who had 

 captured them at Maison Carree. This last-mentioned species, which 

 may be called D. maurusia, must, like D. crocota, be very nearly 

 allied to D. lata Eeuss 2 ) from Egypt: it was probably one of these 

 species, and not D. erythrina, which Fabkicius 3 ) called Ar. rnfipes, 

 in the erroneous belief that it was identical with Ar. rufipes Linn. — 

 With the real D. rubicunda C. Koch, which is different both from 

 D. rubicunda Blackw. and D. rubicunda Menge, and of which I have 

 been favoured by Dr L. Koch with a cT and 9 ad-i D. grisea 

 Canestr. 4 ) is perhaps identical. 



Of D. erythrina Blackw. or D. Cambridgii N. I have collected 

 numerous specimens, amongst which are two full-grown males, in 

 Germany, at Pyrmont and Kissingen, and Mr Cambridge has obliged 

 me with a ad. from England. 



D. erythrina Walck. is unknown to me. The four other spe- 

 cies here mentioned are certainly very like each other both in co- 

 lour and form, but sure marks whereby they may easily be distin- 

 guished, are not wanting. A few of the most important may be 

 here signalized. 



D. Cambridgii. — The breadth of the clypeus at the utmost does 

 not exceed the length of the tibiae of the l:st pair; the interval be- 

 tween the two anterior eyes is at least as great as the diameter of 



1) De Villers, Linn. Entom., IV, p. 128; Nomencl. Ic. Entom. Linn., Tab. 

 XI, fig. 9. 



2) I should have adopted the name D. lata for my D. maurusia, had not 

 Mr Cambridge informed me that he had captured another, very nearly allied spe- 

 cies in Egypt, to which the name D. lata Eeuss perhaps rightly belongs. 



3) Entom. Syst., II, p. 426. 



4) Nuovi Aracn. Ital., in Annuario della Soc. d. Naturalisti in Modena, III, 

 p. 191 ; Canestr. e Pavesi, Catal. sinon. degli Aran. Ital., in Archiv. per la Zool. 

 etc., p. 5, Tav. LTI, fig. 3. 



