322 PROCEEDINGS OF THE ACADEMY OF [April, 



Ceraticelns mgosas n. sp. (PI. XXVIII, figs. 5, 7.) 



c?' Length 1.5 mm. Cephalothorax, wide .5 mm., long .65 mm. 



Legs I II III IV 



Tar 26 .26 .24 .26 



Met 29 .26 .25 .31 



Tib 35 .31 .26 .41 



Pat 19 .19 .19 .19 



Fern 46 .43 .38 .5 



Cephalothorax yellowish-brown, darker toward the eyes which are 

 surrounded by black rings, anterior part strongly and abruptly elevated, 

 liead normal. Posterior eyes in a straight line, nearly equal, the 

 median eyes being only slightly smaller, nearer each other than to the 

 lateral; anterior eyes in a straight line, median eyes smaller than the 

 lateral and much nearer to each other than to them. Clypeus plane, 

 slightly protruding and about as wide as ocular area. Chelicerse short, 

 somewhat retreating. Sternum grayish-orange, black along edge in- 

 side a narrow band of yellow orange; posterior point narrower than 

 length of fourth coxa. Endites and labiimi much lighter than 

 sternum. 



Abdomen has the dorsal sclerite almost contiguous with epigastric 

 sclerite in front, thus covering the anterior end of the abdomen; hard 

 parts orange, dorsal sclerite thickly armed with small tubercles, espe- 

 cially in front, soft parts grayish-yellow, darker below. Legs light 

 yellow. 



Apophysis of the tibia of palpus sharply bent near the apex, the 

 outer margin armed with a series of three sette; inner margin of tibia 

 provided with an obtuse tooth; tarsal hook long, very strongly 

 curved, dilated at the tip, armed on outer face with five setae; style 

 with a sharp bend near the middle. 



Two males in Fox collection from Sea Cliff (N. Y.), labelled C. 

 rugosa. 



Ceraticelus tibialis Fox. (PI. XXVIII, fig. 6.) 



(^ Palpus. 



Tar 25 



Tib length including hook .24 



Pat 12 



THYREOB.ffi:US E. Sim. 

 Thyreobaeus latioeps Em. 



This genus was established for a single species from Madagascar. 

 While it is very improbable that T. laticeps is congeneric with T. 

 scutiger E. Sim., its type, yet it so closely agrees with it in all essential 

 characters that it seems necessary to place it there. 



