20 M. A. Carriker 



clear. Legs short and stout, narrowly margined with brownish 

 on femora, concolorous with head. 



Abdomen clavate, widest at sixth segment; posterior angles of 

 segments rounded and protruding, with one hair in third, and 

 two in segments four to seven; eighth segment with three hairs 

 on each side; ninth small, clear, and indented at tip; segments 

 one to seven with pitchy lateral bands, slightly paler along outer 

 margins, separated by clear posterior angles and projecting into 

 adjacent anterior segments; segments one to eight with broad, 

 median, transverse bands of pale, smoky brown, separated by 

 clear sutures except between segments six and seven ; the band 

 in the eighth segment longer and narrower, nearly reaching the 

 lateral margins of segment. 



A single female collected on Piranga hidentata sanguinolcnta 

 taken on the volcano Irazu, February, 1902. 



This form resembles A''. ampuUatus Piag., and is distinguished 

 from that species chiefly by the narrower clypeus, heavier anten- 

 nal bands, and smaller legs. 



Nirmus pseudophaeus sp. nov., pi. Ill, fig. I 



Female. — Body, length 2.18 mm., width .60 mm.; almost 

 exactly the shape of N. fuscus, pale translucent, smoky brown, 

 much darker on head; antennal and temporal bands on head 

 much as fuscus, but lateral bands of abdomen wanting. 



Head, length .60 mm., width .44 mm. ; shape and markings 

 practically the same as in fuscus, except that they are a smoky 

 brown instead of golden brown, while the interior is paler and 

 also smoky brown ; temples with one long hair. 



Prothorax quadrilateral, with sides slightly sinuate and one 

 short hair in the posterior angles ; very pale, indistinct lateral 

 bands. Metathorax larger, with slightly expanded anterior an- 

 gles, sides rounding and diverging, posterior margin truncate, 

 with a short, median, pointed projection on abdomen; posterior 

 angles rounded with one slender hair ; four more slender sub- 

 marginal hairs along lateral portion of posterior margin ; a pale 

 brown, median, anterior blotch, about in the region of the meso- 

 thorax ; a darker band across posterior portion of segment, more 



142 



