SIR JOHN LUBBOCK ON THE THYSANURA. 297 



Smynthttrtjs Botjrletii, Gervais. (PL XXI. figs. 8-10.) 



Suites k Buffon, Ins. Apteres, iii. p. 403. 



Dark purple and yellow. The purple forms two broad, irregular bands with brok D 



edges running along the side of the body; there are two yellow patches on the 



head between the black eye-patches, separated by a central band of dark purple, and 



uniting behind. The spring, legs, and underside of body are yellow, the two 



terminal segments of the antennas with a brownish tinge. 



I found this pretty little species among long grass at High Elms, in June and July. 



The antennas resemble those of Smynthurus luteus, but the terminal segment (PL XXI. 



lig. 9) is less distinctly ringed. 

 The mandibles offer no special peculiarity ; they have respectively four and live t 



ith four has only the terminal one large, the other three are very 



I 



u 



tcnent haii 



the mandible with five teeth they are all well marked, increasing in si/ from the k-isr 

 to the extremity. The feet have the two claws more equal in size ; the 



are slightly marked. 



The spring has only a few scattered hairs (PL XXI. fig. 10), none of which are Umenf 

 The terminal segment is knife-shaped, somewhat pointed at the < xtrennty, and rerj 



finely serrated on the inner margin. 

 There is no other species with which this can be confounded. 



SimfTHUBTIS nigek, n. sp. (PL XXL figs. 11, 12.) Bluish black ; feet terminal I scg 



Hair 



ment of spring, and a spot at the front inner corner of each eye-patch pal 

 short, white, more or less in longitudinal rows. 

 Lemrth J. of an inch. Under boards in my kitchen-garden. Not common, sol.tan 



August to December 



It differs from 



This ugly little species does not resemble any one yet describ. 



„ ,, • e,r> ««,1 from S fvhanWftits 01 JMCoiei in 



S. ater of De Geer in the form of the spring &c., and Irorn a./' j 



the ahsencc of white patches on the body, and in bavin, the h £— £J „ 



The terminal portion of the antenna is not distinctly nnge* j 



subsets being, however, indicated by the --^ 1: ' 

 and rounded; one mandible has five teeth, while in th other _the w* J™ ^ 



The feet have several tenent hairs. The large _da, » «* ' ,„„, , amoll;[ . of 

 narrower in the anterior legs than in the posterior ones ^ 



the saltatory appendage (PI .XXI. fig. U) ^ ^Z^JZ rows on th, urn.-, 

 have on the same side a row of fine teeth; in feet there are ^ 



surface, which, bein? almost always thrown either to one siue 



appearance of asymmetry. 



SsrexTHURUs pallipes, Bourlet. (PI. XXI. figs. 13-1-' ) 



Smynthunu pallipes, Bourlet, Sur les Podurelles, p. 5!>. 



, Gervais, Suites a Buffon, Apteres, p. W4. 

 , Kicolet, Ann. Soc. Ent. France, 2* ser. v. p. 3oJ. g 



