IQQ CALIFORNIA ACADEMY OF SCIENCES [PROc. 4th Ser. 



0.09 mm.; Ill, 0.46 mm.; IV, 0.21 mm.; V, 0.22 mm.; VI, 

 0.15 mm. (base 0.12 mm., spur 0.03 mm.); total 1.20 mm. 

 Sensoria large and circular, distributed on the left member as 

 follows: III, 7 in a row; IV, 2; V, 2; VI with the usual 

 number. Paratypes have on III, 10-12; IV, 0-3; V, 0-3. 

 Rostrum long, reaching to the middle of the abdomen. Tho- 

 rax black. Coxse, trochanters and tarsi black, femora pale 

 with black tips, tibiae pale in middle with both ends black. 

 Wings narrow, venation as shown in drawing; length of 

 front wings 4.3 mm. The alcoholic specimens have the 

 wings stained a deep-wine color. Abdomen dark reddish- 

 brown with black markings. Cornicles black, hairy, wide at 

 base and with slightly flaring mouth, 0.09 mm. long and 0.19 

 mm. diameter at the base. Cauda black. 



Apterous viviparous females (Paratypes) — Four ma- 

 ture and several immature specimens. Length 3.5 mm., width 

 2 mm. Prevailing color dark reddish brown with silvery 

 markings on the dorsum due to white wax. Body hairy. 

 Antennae dusky with the apices of III-VI black ; all articles 

 hairy; lengths of articles: I, 0.09 mm.; II, 0.10 mm.; Ill, 

 0.43 mm.; IV, 0.17 mm.; V, 0.18 mm.; VI, 0.13 mm. (base 

 0.10 mm., spur 0.03 mm.) ; total 1.10 mm. Sensoria large 

 and distributed as follows: III, none; IV, 0-1; VI, 1-2; 

 VI normal. Abdomen with many small black spots, especially 

 at the bases of the numerous hairs. Cornicles black, hairy, 

 very wide at base and small at the mouth which is slightly 

 flared; length 0.2 mm., diameter at the base 0.57 mm. 



Host plant — Ahu-matsu (Japanese red pine), Piniis 

 densifiora S. & Z. 

 Locality — Nikko. 



Date of collection — June 10, 1913. 

 Collection number — 80. 



Lachnus, species 



Only apterous forms of this species were taken. The length 

 averages 3.8 mm., the width 2.3 mm. Prevailing color black 

 with reddish-brown markings on the back. Antennae black 

 and pale brown, about one-third as long as the body; the 

 large circular sensoria distributed as follows: III, none; IV, 



