62 TERTIARY INSECTS OF NORTH AMERICA. 



1.5 mn j &xtt,M. of palpi beyond corselet, 3.5'"; length of first pair of legs, 

 10 mm ; its femora, 3' ui "; tibiae, l.o' um ; tarsi, ">.5 mm ; second pair, 9.5 mm ; femora 

 and tibiae, 3. 75 mra ; tarsi, 5.75 mi "; third pair, 6. 6 mui ; femora and tibiae, 2.6 mm ; 

 tarsi, 4 mi "; fourth pair, 10.2 mm ; femora, 2.4 mm ; tibiae, 2 mm ; tarsi, 5.8 mm . 



Florissant. Two ?, Nos. 205, and 1.806 and 1.818 of the Princeton col- 

 lections. 



Family DRASSIDES Sundevall. 



This family is richly represented in Tertiary species ; indeed, except- 

 ing Theridides, more richly than any other family of Araneides, being repre- 

 sented in Europe by the genera Anatone (three species), Clubiona (eight 

 species), Macaria (five species), Melanophora (five species), Pythonissa 

 (ten species), and Sosybius (two species), as well as by one species each of 

 Anyphaena, Drassus, Erithns, Heteromma, and Idmonia. Every one 6f 

 these are amber species, excepting one Clubiona and one Macaria from 

 Oeningen. Our own fauna has besides this yielded four species of Clubiona 

 and one of Anyphaena, both genera represented in amber, and one also at 

 Oeningen. The present distribution of the species of this family is over 

 the whole world, but the borders of the Mediterranean, eastern Europe, 

 and western South America appear to be far the most richly represented. 

 Some of the genera are confined to one or the other of these regions and 



6 



nearly all to warm temperate regions. (November, 1881.) 



CLUBIONA Latreille. 



A number of species appear to fall here, although it is difficult to tell 

 whether they should not rather be referred to the lycosoid genus Dolo- 

 mecles or its vicinity, so uncertain are the clews we have to their real posi- 

 tion; until more satisfactory specimens can be obtained they may be placed 

 here, the more so as the species all bear some resemblance to the amber 

 spiders referred to the same genus, C. eversa to C. tomentosa, C. arcana to 

 C. sericea and C. lanata, C. latebrosa to C. attenuata, and C. ostentata to C. 

 microphthalma. The Oeningen species seems to be very different, with its 

 rounded abdomen. Very few genera of spiders are so richly endowed with 

 fossil species as this, Theridium indeed being the only one which surpasses 

 it, and next to it comes Pythonissa, a genus of the same family as this. 

 The genus is widely spread in modern times. A few species are common 

 throughout the greater part of Europe, others are confined to the Mediter- 



