Mallop/ia<^a froiii Birds of Costa Rica, Central America 67 



tioii of segment, and extending into first abdominal segment; 

 whole segment deep smoky brown. Legs stout, with swollen 

 femora and rather long tibiae and tarsi, concolorous with body,^ 

 with some short hairs. 



Abdomen large, subelliptical, with one hair and several spines 

 in segments one to eight ; ninth segment rounded, with a fringe 

 of hairs in the median portion ; posterior margin of segments 

 with a row of fine hairs ; narrow, pitchy, lateral bands, broken at 

 the angles ; heavy continuous transverse bands of deep smoky 

 brown, separated by clearer sutures on segments one to eight; 

 ninth segment clear, with a brown posterior band and a brownish 

 spot in lateral portions. 



Male. — Body, length 1.52 mm., width .57 mm.; head, length 

 .29 mm., width .49 mm. ; very similar to female. 



Numerous males and females collected on Buarremon bntn- 

 iieiiiuchus, on the volcano Irazu, Costa Rica, February, 1902. 

 This species resembles, in a general way, Piaget's M. e.vtraneum, 

 but dififers greatly in markings of thorax, size of legs, and other 

 details. 



Menopon pailoris sp. nov., pi. VIH, fig. 3 



Female. — Body, length 1.54 mm., width .53 mm.; pale, clear 

 golden, with a slight smoky tinge ; no conspicuous markings, 

 temples bhmtly angulated anteriorly and very short, abdomen 

 very hairy. 



Head, length .34 mm., width .50 mm.; front broad, flatly 

 rounded, with four short hairs; sides sinuate, slightly diverging, 

 with two long and two short hairs; anterior margin of temples 

 almost transverse; a prominent ocular fringe, temples with an- 

 terior and posterior angles (similar to Nitj:scJiia) blimtly 

 rounded, and four long pustulated hairs along the lateral mar- 

 gins; occipital margin concave, occiput slightly convex, with 

 two short hairs ; a pale ocular blotch and a black fleck ; mandibles 

 small, chestnut at tips; a pale band over palpi, which project 

 slightly; a narrow, brown, occipital margin. 



Frothorax hexagonal, lateral angles slightly produced, bluntly 

 rounded, with three spines ; anterior, antero- and postero-lateral 



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