"^'"189^'] PROCEEDINGS OF THE NATIONAL MUSEUM. 557 



Mitopus pictus {W(jo(l) VV'oci,l. 



(Pliiti; LXii, Fig. 2.) 



riialfiDf/iinii piclnm Wofxl, Coiiiiii. Ivssex Inst., x\, 30-.'U. 

 Olii/itlitpliKH piclKs (Wood). Weed, Amor. Nat., xxi, ',i'). 

 OliUDloplnis piclHfi (Wood). Wt-ed, Bull. 111. St. Lab. N. H., in, K.j-OT. 

 Milopii.s pirliiH (Wood). Weed, Ainer. Nat., xxvi, 52X. 



Male. — Body 5""" long, 3.2'"'" wide; pal])i, 4.1""' long. Legs: first, 

 11"""; second, 27'"'; tliird, 13"""; fourtb, 20""". 



Dorsum minutely scabrcms, mottled ash-gray, much lighter in some 

 si)ecimens than others. Dark central marking generally very distinct, 

 commeDoing at the anterior border of the cephalothorax, the dorsal sur- 

 lace ot which it almost covers, and .suddenly contracting at itspostcri(U' 

 margin, so that it starts on the abdonu'ii as a narrow line, slightly 

 wider than the eye eminence, then gradually expanding until it reaches 

 the end of the anterioi- third of the abdomen, wlunc it suddcnlj' contracts, 

 its borders irregularly <;urving toward the dorso-meson, then expand- 

 ing again, though not becoming as wide as before, and finally gradually 

 contracting and running as a stripe to the last segment, or, as in some 

 specimens, simply terminating at the anterior margin of the penulti- 

 mate segment. Anterior margin of cephalothorax nearly straight, 

 lateral angles slightly pr<»duced, each having a black s])ine on an ele- 

 vated base; three large brownish black, tooth-like [)rocesses just back 

 of the middle of the margin, each terminating with a mioute spine, the 

 middle process being slightly in front of the others. Back of these, but 

 in front of the eye eminence, there is a curved series of minute spines 

 on whitish elevated bases, and back of the eye eminence, on the cephal- 

 othorax, there are two similar nearly transverse series. There is also' 

 a similar transverse series on each segment of the abdomen most easily 

 seen on the black central marking. Eye ennnence large, brownish, 

 canaliculate; each carina having four thick, brownish tubercles, each 

 of which ternunates in a black spine. Mandibles light brown, tii)s of 

 claws black; dorsal surface of second joint and of apical portion of 

 first joint furni.shed with short black hairs; second joint with a blunt 

 tubercle on its inner dorsolateral surface, just above the base of the 

 finger forming part of the claw, and the apical poi'tion of its outer 

 lateral surface (behind tlie insertion of the thumb) prolonged into a 

 tubercular ]n'ocess. Thunib with a prominent dorsal tubercle near its 

 base. rali)i mottled; the outer ventrolateral ixution of the fennir 

 with an irregular row of long, slender, white tubeicles, terminating 

 Avith black .spines; inner ventro-lateral surface with a series of long, 

 black, curved, spinims hairs; inner lateral surface with similar shorter 

 hairs more numerous, forming a brush on the slightly produced inner 

 distal angle; dorsal and outer lateral surfaces with short spinous hairs; 

 patella nearly as long as tibia, its inner distal angle produced and fur- 

 nished with a brush of black hairs with recurved tips; shorter hairs in 



