^'liiyT''] PROCEEDINGS OF THE NATIONAL MUSEUM. 559 



those on the side, and also sli,i>litly in front of thoiii. Eye eminence 

 prominent, constricted at base; grayivsh, except a dark sjiot about each 

 eye; eyes small; canaliculate, and havinj>- on each carina a row of four 

 prominent, conical, <j;rayisli tubercles, each terminating- in a minute 

 black spine. Mandibles light brown, claws tipped with black; dorsal 

 surface of second joint furnished with short black hairs. Palpi mot- 

 tled; ventral surface of femur with numerous white, elongate, conical 

 tubercles, each tipped with a prominent black spine; dorsal surface 

 furnished with numerous black si)inous hairs, many of which are tipped 

 Avith white; jjatella short, with its inner lateral distal angle much pro- 

 longed (almost equaling the pateUa in length), the whole inner lateral 

 surface being thickly set with strong spines, black tipped with white; 

 a few sm9.11er spines on its dorsal surface. Tibia slightly longer than 

 l)atella, its inner lateral distal angle slightly prolonged, and its innei- 

 lateral surface provided with spines like tliose on the patella; its dor- 

 sal and outer lateral surfjices also having smaller and sparser spines, 

 and its ventral surface being provided with a few whitish conical tuber- 

 cles tipped with black spines; tarsus furnished with many rows of 

 rather long black stiff hairs, and having two small black tubercles at 

 the base of the well developed claw. Ventrum light gray, hispid. Legs 

 very short, robust, pinkish; coxa' light gray with a slight pink tinge, 

 provided with rather long, stiff black hairs on elevated, whitish bases; 

 trochanters tuberculate, light gray with a pink tinge; remaining joints 

 pinkish, all except tarsi having longitudinal rows of small black spines. 



Described from one specimen collected in Warren County, Ohio, dur- 

 ing the summer of 1889. I have since received from Prof. S. A. Forbes 

 one other specimen taken in Illinois, which appears to belong to the 

 same species. 



A rei^xamination of the type specimen after it has been in alcohol 

 nearly four years shows that it was apparently just ready to moult 

 when captured. The body has shrunken away from the outer skin, and 

 an inner one seems to cover it. This leads to the suspicion that this 

 is an immature form of M. jnctiis, the pink coloring possibly being- due 

 to the peculiar conditions of the moulting period. 



Phalangium Linno. 



Body soft or sub-coriaceous, with dorsum generally furnished with 

 small sharp tubercles, which on the abdomen are arranged in transverse 

 series. Eye eminence canaliculate, with two series of pointed tubercles. 

 Lateral pores large, oval, and near the margin. Mandibles short and 

 simple in the female, often more developed and provided with tubercles 

 in the male; first article unarmed below. Palpi simple, often having 

 the inner distal angle of the femur and of the patella very slightly pro- 

 duced, but never prolonged into a process; hairs equal, or sometimes 

 thicker on the inner side, but not forming a brush; patella always 

 shorter than tibia; maxillary lobe provided at the base with two conical 



