402 



PSYCHE. 



[February 1S93. 



Eyes greenish-black with brownish reflec- 

 tions. Antennae greenish-black, the articu- 

 lations pale. 



Abdomen with the overlapping caudal and 

 pleural margins of each segment paler green- 

 ish-black, these paler markings enlarged 

 anteriorly on sterna 6, 7, and 8, to form 

 very obtusely triangular pale spots. A large 

 circular pale spot on sternum 9 reach- 

 ing the caudal margin. The elevated cepha- 

 lic margin of sternum 10 pale in median 

 portion. 



Fossal membranes deep brown. Femora 1 

 and 2 deep sage green, lightest on proximal 



thirds of caudal faces. Posterior femora 

 black at tips, passing into dark brownish- 

 green on the external face, and olive-green 

 on the internal face and in tibial groove; 

 dusky herring-bone markings on both faces; 

 a dusky spot on the proximal end of the 

 upper groove and another with oblique edges 

 one-third the distance toward tip. 



Tibiae deep greenish-black; the posterior 

 shining black at proximal end with a narrow 

 sage-green annulus beyond, widest inside. 

 Spines black. Tarsi deep greenish-black 

 above, paler beneath, especially on the 

 callosities and pulvilli. 



A NEW AMERICAN LACINIUS. 



BY NATHAN BANKS, SEA CLIFF, N. Y. 



Lacinius is a genus of Phalangiidae. 

 It was erected in 1S76 by Thorell for P. 

 horridus Panz. (Sopra alcuni Opilioni 

 d'Europa e deUAsia occidentale, Ann. 

 mus. civ. st. nat. Genova, vol. viii, 

 1876). Simon (Arachnides de France 

 tome vii, 1879) united it to Acantho- 

 lopus Koch, I think, on good grounds^ 

 But as Acantholophus is preoccupied, I 

 believe, by MacLeay in Coleoptera, it 

 may be best to use Lacinius ; especially 

 so since Simon considers P. horridtis 

 Panz. as the type of Acantholophus. 

 Lacinius is closely related to certain 

 species of Oligolophus by the spinous 

 eye-tubercle and anterior margin of 

 cephalothorax ; also by having promi- 

 nent spines on the femora of the palpi. 

 It differs in having the eye-tubercle 

 more remote from the anterior margin 

 of the cephalothorax. I believe the 

 American forms can be farther separated 

 from Oligolophus in not having false 

 articulations in the metatarsi. The legs 



are shorter than in Oligolophus. Two 

 species of Oligolophus have been de- 

 scribed from U. S., O. p ictus Wood 

 and O. ohioensis Weed. The latter I 

 should place in Lacinius ; it resembles 

 the European L. spinosus Bosc. (o5- 

 tusidentatus Koch) ; while the species 

 which I describe below has more resem 

 blance to the typical species of the 

 genus L. horridus Panz. 



Lacinius, Oligolophus, Mitopus and 

 Phalangium form a tribe of the Phalan- 

 ginae, distinguished by having a 

 prominently spinous eye-tubercle and a 

 group of spines on the anterior margin 

 of the cephalothorax. This tribe may 

 be called Oligolophini. It may be 

 divided into two groups, according to 

 the presence (Lacinius, Oligolophus) 

 or absence (Mitopus, Phalangium) of 

 prominent spines on the femora of the 

 palpi. 



Phalangium longipalpis Weed 

 would according to some European 



