Superfamily Argiopoidea 



distinguished from the other species by its light colour and bright 

 yellow head. 



Ceratinopsis interpres (Ce-rat-i-nop'sis in-ter'pres). — This 

 is a representative of a group of species which differ from all 

 other Erigoninae in having longer legs, which are also more delicate 

 toward the extremity; the metatarsi are not at all or barely 

 shorter than the tibiae; the sternum is broad and ends behind 

 between the broadly separated hind coxae in a truncated and 

 inflexed point. In C. interpres the colour is bright orange with a 

 little black around the eyes and around the spinnerets. The 

 length of the body is about one tenth inch. 



con. 



a.d. 



m 



d. 



b.d. 



Subfamily LINYPHIINiE (Li-nyph-i-i'nae) 



The Linyphiids (Li-nyph-'i-ids) 



To this subfamily belong the larger and better known of 

 the species of the sheet-web weavers; some of them are exceed- 

 ingly common and build elabor- 

 ate webs, the type of which 

 varies greatly according to the 

 species. 



There is no easily seen char- 

 acter by which the linyphiids 

 can be distinguished from the 

 erigonids. In the males of the 

 Linyphiinae the tibia of the pedi- 

 palps lacks a true apophysis at 

 its distal end, although it is some- 

 times enlarged at the tip or may 

 even bear a tooth; and the para- 

 cymbium is more developed than 

 in the preceding subfamily, it is 

 more or less sickle-shaped or 

 horseshoe-shaped. Figure 379 

 represents the bulb of the male 

 of Linyphia with the paracym- 

 bium (p. c.) slightly removed from 

 it; and Fig. 386 represents an expanded bulb. This is de- 

 scribed in detail in an earlier chapter (p. 1 12). 



In the female the pedipalps are furnished with tarsal claws 



Fifi. 3S6. PALPUS OF 

 LINYPHIA PHRYGIANA 



374 



