34 J. TI. Emerton — New Euglcaid Tlierididce. 



male palpi rcsoinble closely those oi' fixsiceps, but the tibial hook is 

 twice as wicl(% darker colored and has longer and sharper teeth at the 

 end. Fig. 3r'. I have not yet separated the females from those of 

 Jisslceps. 



I have two males taken at different times in Pine Swamp, New 

 Haven, Conn., under leaves in winter. 



Ceratiiiella pygmsea, new. 



Plate YII, figure 4. 



The only specimen is little over 1""" long. The colors are very 

 light. Cephalothorax orange-yellow with a dark spot around the , 

 eyes from which a dark line tapers backward to the dorsal groove. 

 The hard ])art of the abdomen is orange-yellow, the rest white. The 

 head of the male is narrow and projects forward over the mandibles, 

 but is not much elevated. Though the spider is smaller than /fs.s?*c^jo,s, 

 the male palpi are as large as those of that species and resemble 

 them very closely. The tibia, hoAvever, is larger and has the terminal 

 tooth longer aiu1 sharper. The tube of the palpal organ is stouter 

 than m fisHceps. The patella is nearly as long as the femur. 



One male under leaves in Pine Swamp, New Haven, Conn., in 

 Octobei'. 



Ceratinella atriceps (Gamb.). 



Erigone atriceps Cambridge, Proc. Zool. Soc. London. 1874. 

 Plate VII, figures 5 to 5t?. 



Length of male 1 -G""". Cephalothorax orange, darker toward 

 the humps, which are nearly black, the dark color sometimes 

 extending backward on the middle line nearly to the dorsal 

 groove. Abdomen dark gray, in alcohol greenish. The thick- 

 ened spot on the back is often indistinct and sometimes absent, 

 but when present is orange colored, darkened by the black hairs 

 over it. The legs are colored like the abdomen, darker toward the 

 tip. The e^ palpi are lighter than the legs, except the tij) which is 

 almost black. 



The head of the male is exteiuled forward beyond the mandibles 

 and has a hump above, bearing the posterior middle eyes. Fig. 5. 

 The icmale has slight projections of the head at the same points. 

 Fig. 5'^ The S copulating organs resemble closely those of 

 Jissiceps. Fig. 5h. The tibial hook is shorter and more curved. 



