656 PROCEEDINGS OF THE ACADEMY OF [Sept. 



rowed caudally, posterior margin truncate. Basal plate moderately- 

 narrowed, wider anteriorly than long in ratio of 3 : 2; pleiirse exposed 

 in usual manner. 



Antennae not attenuated distally, all articles excepting ultimate 

 obconic; ultimate article a little shorter than the two preceding 

 together; length 3.2 mm. 



Claws of prehensorial feet when closed reaching but slightly beyond 

 front margin of head; presternal teeth pale, obtuse; median furrow 

 of presternum wide, shallow, not well marked posteriorly; femora with 

 a stout, blunt black tooth, the next two joints with small, black 

 tubercle-like teeth, the claws with an acute tooth. 



Anterior prsescuta short but all distinctly exposed, the median and 

 posterior ones long. A number of anterior dorsal scuta with a distinct 

 median sulcus between the two lateral sulci. 



The anterior ventral scuta with a deep median sulcus which does 

 not attain the margin. 



Anterior spiracle large, oval, subvertical, the second and third of 

 similar form but smaller, those following circular, rapidly decreasing 

 in size, those of the middle and posterior region being very small. 



Last ventral plate wide, strongly narrowed caudally, the sides 

 straight. Last pleurae inflated, having along the edge of the ventral 

 plate on each side a row of 4 or 5 very small pores and at a distance on 

 middle part a clearly larger isolated single pore. 



Anal pore moderate. 



First pair of legs much shorter and more slender than the second. 

 Anal legs stouter and much longer than the penult pair. 



Pairs of legs 41( !). Length 22 mm. ; width 1 mm. 



Locality. — Pacific Grove, California. 



One male. 



This species cannot well be identified with the M. limatus of Wood, 

 which is apparently a much larger form. Aside from other minor 

 differences more or less uncertainly indicated by Wood's description, 

 the number of legs of limatus is given as "43-44," indicating that sev- 

 eral specimens were examined. The number 44 is, of course, an error; 

 but it is practically certain that the number of pairs of legs, which so 

 far as known is absolutely fixed for each species in this genus, was 43, 

 and not the unusual number 41, 

 Linotaenia rubelliana sp. nov. 



Color in life bright red, fading in alcohol to a uniform brown, the 

 antennae alone remaining somewhat brighter. 



Cephalic plate narrowed anteriorly, in front subnarrowly rounded, 



