448 



PSYCHE. 



[November iSii^6. 



Vertex sparselv bristlv, with a median longi- 

 tudinal purple stripe. A prominent black 

 patch between the bases of the antennae. 

 Eye spots large, black, broadly surrounded 

 by chrome yellow. Antennae purple, often 

 yellow basally, three-fifths thebody in lengtli. 

 segments about as i : 1.5 :3 :5; basal segment 

 stout, almost naked; second twice as long as 

 broad, sparsely hairy; third cylindrical, with 

 four whorls; terminal segment cylindrical, 

 not ringed, with seven or eight distant 

 whorls of hairs. Body from above elongate- 

 ovate with a small reentering angle; body 

 segments distinctly visible. Thorax with 

 intersegmental rows of small, pale yellow^ 

 dots. Sides of abdomen with pale spots 

 often round. Posterior dorsum with short, 

 erect bristles. Anal tubercle rounded, with 

 long deflexed bristles. Abdomen swollen at 

 base of furcula. Ventral tube stout, as long 

 as a tibia, emitting two rounded tubercles. 

 Legs stout, bristly, pale purple with yellow- 

 ish patches. Superior claws (fig. 6), except 

 of hind feet, remarkably long, as long as a 

 mucro, slender, tapering, little curved apic- 

 allv, unidentate beneath, one-third from apex, 

 purple up to the tooth ; inferior claw less than 

 half as long, narrow, tapering, straight. 

 Superior claws of hind feet (fig. S) two-thirds 

 as long as those of the other feet, stout, 

 smoothly tapering and well-curved through- 

 out, not toothed; inferior claw half the last 

 in length, broad, rounded-triangular, inner 

 edge concave, outer convex, near the latter 

 a stout rib continued into an apical bristle 

 longer than the claw itself. Teneiit hairs 

 absent throughout. Furcula reaching be- 

 yond the iTiouth, purple to almost white, 

 segments ventrally as i : 3.5 : i. Manubrium 

 laterally oblong, almost naked; dentes with 

 stout bristles longer and thicker apically ; 

 miicrones (fig. 7) spoon-like, elongate-ovate 

 from above, unsymmetrical with a stout, 

 lanceolate, purple midrib from which radiate 

 stout ribs to the inner coarsely serrated mar- 

 gin of the colorless limb and shorter weaker 

 ribs to the outer entire margin of the opposite 

 limb. 



Maximum length, .97 mm. De^cribed from 

 fifty types. 



S. amicus occurred abundanllv Avith .S. 

 soc!<i/i.<, last described, to which it is closely 

 related, also having similar habits. I had 

 the good fortune frequently to observe the 

 probable copulation of both and was able to 

 verify in most details the observations made 

 upon the allied European species by Reuter* 

 and Levander.f 



5. amicus appears to represent in this 

 country the European S. aqiiaticus Bonrl., 

 althougli it cannot be considered the same 

 species. The body of amicus is quite dift'er- 

 rent in form and markings, the superior 

 claws of fore and mid feet aie much longer, 

 entirely different in shapej and clearly uni- 

 dentate, the opposing inferior claws having 

 no subapical bristle, tenent hairs being absent 

 while the mucrones have a differently shaped 

 midrib and margins coarsely serrate within 

 and entire without. 



Smr"/i't"-i/s remains, n. sp. 



Bluish black Head free, black, almost 

 naked. Eye spots black, broadly snnounded 

 by yellow, especially within. Antennae 

 short, two-fifths the body in length, stout, 

 subclavate, segments as 1:1.5:3:5; basal 

 segment as broad as long, black, naked; 

 second clavate, petiolate, yelloyv, with a few 

 minute bristles; third subpetiolate, yellow, 

 wnth few such bri^-lles; terminal .segment 

 subcUivate, blunt, black, unringed, with many 

 close whorls of moderate bristles. Body 

 distinctly segmented, froiu above smoothly 

 oval, posteriorly with scattered minute 

 bristles, sides with several row^s of pale, cir- 

 cular spots; anal tubercle visible from above, 

 small, rounded, distinctly of two segments 

 with longer bristles, ^'entral tube stout; 



*Reuter, O. M. Sur raccouplemeut chez deuxesp^ces de 

 I'ordre des Collemboles. Ent. Tidsk. I Arg. p. 159. 1S80. 



tLevander, K. M. Einige biologisclie beobachtungeii 

 iJber Smiiithnrm apicalis Renter. .'\ct. Soc. p. Fauna et 

 Flora Fenn. IX, no. 9, 1894. 



JSchott. Zur. Syst. etc., p. 36. 37. Taf. II. figs. 22-25. 



