561 

 1902.] NATURAL SCIENCES OF PHILADELPHIA. 



bauds Of the same color extending to the spinnerets; tlie spots on 

 tlie venter are often arranged very irregularly^ 



Co,nparison..-A well-marked species. B=-,'^\ ("^J> ~" 

 sidei. it to be synonvmic with L. 6a6in3<o,a B lackw. canno 

 agree with this conclnsion, for though the coloration of the two, 

 quite similar, babingtoni is described as havmg a thoracal length 

 of two-fifths of an inch (a little more than 10 mm.), wherea the 

 largest specimen I have seen of nidicola has a *«->' '"f °^ 

 only 9.2 mm.-, and in babmgtoni the fourth leg is actually and 

 proporlionatelv shorter. Emerton mentions 9 mm. as the length o 

 the cephalothira. in his specimens of nM.cofa. and P-umabl^ to 

 is the measurement of his largest specimen. These are not grea 

 differences, but it is necessary to examine Canadian «Pe«-- ° 

 babmgtoui before the identity of the two may be regarded as ^^ell 

 established. 



16. Lycosa baltimoriana (Keys.) (PI. XXIX, fig. 25). 

 Tarentula Baltimoriana Keyserling, 1876 

 Tarentula baltimoriana Keys., Marx, i»»»- 



n c?, Maryland, McCook Coll.) , . ,, i ^. 



Eyes -First row slightly broader than the second, its lateral eyes 

 lowex- and less than half as large as its middle ^J^^' fy^^f 

 .econd row largest, not quite their diameter apart. Thud rovN 

 broaTest its eyes farther from each other than from the second 

 1 L..^ L area less than one-sixth the length of the cephalo- 



row. Dorsal eye area less than 

 thorax 



j.,,^._Cephalothorax low for its diameter, head broad m fron 



and its sides rather oblique. Length of «-ra more than dou^ 



the height of the head in front. Sternum longer than bioad. 



Legs stout and hairy. 



Dimensiom.— Length of cephalothorax, 9 mm. 



Length of abdomen, 7.5 mm. 

 Length of first leg, 31 mm. 

 Length of sewmd leg, 28.5 mm. 

 Length of third leg, 26 mm. 



Lcn^'-th of fourth leg, 33 mm. 

 CoC in AlcohoL-Cephalothorax reddish-brown, a narrow white 

 n.edkn-1 ne in the eye area, a lighter reddish area from the eyes 

 ro th" dorsal groove and from the latter in radiations to the 



defthe reddish and the darker reddis.-brown there intergn.l- 



