616 Mr. Buacxwauu's Descriptions of new Species of Spiders. 
they are but little developed, complicated in structure, and of a dark 
reddish brown colour. 
Adult males and females of this handsome spider were taken in swampy 
ground in woods at Oakland, in May 1839. The decidedly curved form of 
the maxillæ, an approximation to which may be observed in Lycosa cam- 
pestris, Lycosa allodroma, and some other species, has not been considered of 
sufficient importance to require its separation from the genus Lycosa, with 
the semi-aquatic species of which genus it is very closely allied by its general 
organization, habits, and colours. 
Family Sauricipa. 
Genus Sarricus, Latr. 
7. Salticus distinctus. Cephalo-thorace saturaté brunneo, strigà utrinque mar- 
ginali albida, superné pilis flavescenti-brunneis albisque intermixtis, strigá 
medianà alba; mandibulis maxillis labioque triangulari acuto saturatè 
brunneis ; pedibus pallidé rufescenti-brunneis colore saturatiore fasciatis, 
pari 4to longissimo, dein 3tio, 2do brevissimo ; palpis brevibus, basi satu- 
raté brunneis, apice albidis; abdomine brunneo-rufo albidoque tincto, 
anticè arcubus 2 concentricis obscuris, postice lineis angularibus seriatis 
albidis, macula anali alba. 
Maris par pedum anterius tertio pauld longius; paribus 1mo et 2do 
cum femoribus 3tii 4tique saturaté brunneis. 
Length of the female 1th of an inch; length of cephalo-thorax 4; ; breadth 4l; ; 
breadth of abdomen ; length of a posterior leg 16; length of a leg of 
the second pair +. 
Cephalo-thorax large, nearly quadrilateral, abruptly sloping in the posterior 
region, prominent in front, projecting beyond the mandibles; it is of a 
very dark brown colour, with a longitudinal streak of yellowish white 
immediately above each lateral margin; upper part covered with yellowish 
brown and yellowish white hairs intermixed, a short streak of the latter 
hue occurring in the middle, behind the posterior pair of eyes. Mandi- 
: bles strong, vertical, armed with a few small teeth on the inner surface. 
